{"title":"Lennox 44,000 BTU Furnaces","description":"\u003cdiv class=\"hvac-desc-lead\"\u003e\n\u003cp\u003eLennox gas furnaces at 44,000 BTU input, in Merit ML180, ML193, ML196, and ML296 and Elite EL196, EL280, and EL297 models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hvac-desc-more\"\u003e\n\u003cp\u003eRatings run 80% to 97% AFUE, in 14.5 and 17.5 inch upflow\/horizontal (UH) and downflow (DF) versions.\u003c\/p\u003e\n\u003ch2\u003eChoosing a 44,000 BTU Lennox furnace\u003c\/h2\u003e\n\u003cp\u003eThe ML180 and EL280 are 80% AFUE and typically vent through a metal flue, which often makes for a simpler swap when you're replacing another 80% furnace. The ML193, ML196, ML296, EL196, and EL297 are condensing furnaces, so plan for PVC venting and a condensate drain. The ML180, ML193, ML196, and EL196 are single-stage. The ML296, EL280, and EL297 are two-stage, with a low stage for milder days. Size the furnace from a load calculation, then match the cabinet width to your space and your \u003ca href=\"\/collections\/lennox-evaporator-coils\"\u003eevaporator coil\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eTo compare by efficiency, see Lennox \u003ca href=\"\/collections\/lennox-80-afue-furnaces\"\u003e80%\u003c\/a\u003e, \u003ca href=\"\/collections\/lennox-93-afue-furnaces\"\u003e93%\u003c\/a\u003e, \u003ca href=\"\/collections\/lennox-96-afue-furnaces\"\u003e96%\u003c\/a\u003e, and \u003ca href=\"\/collections\/lennox-97-afue-furnaces\"\u003e97%\u003c\/a\u003e AFUE furnaces. Need a different size? See \u003ca href=\"\/collections\/lennox-40-000-btu-furnaces\"\u003eLennox 40,000 BTU furnaces\u003c\/a\u003e and \u003ca href=\"\/collections\/lennox-60-000-btu-furnaces\"\u003eLennox 60,000 BTU furnaces\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eCall (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order. Free shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Each product page shows whether an item qualifies. HVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"lennox-el297uh045xv36bk-44-000-furnace","title":"Lennox EL297UH045XV36BK 97% AFUE 44,000 BTU 17.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox EL297UH045XV36BK is an Elite Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output on high fire at 97% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a variable speed blower sized for 2 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 97% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp variable speed motor, 465 to 1,370 cfm, for 2 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 2 means two-stage, 97 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, V is the variable speed blower motor, 36 is the nominal add-on cooling size, B is the 17.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with B in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47258844102818,"sku":"EL297UH045XV36BK","price":3468.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/EL297UH045XV36BK.jpg?v=1788818841"},{"product_id":"lennox-el297uh045xe36bk-44-000-furnace","title":"Lennox EL297UH045XE36BK 97% AFUE 44,000 BTU 17.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox EL297UH045XE36BK is an Elite Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output on high fire at 97% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 97% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 520 to 1,345 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 30 to 60°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 2 means two-stage, 97 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, B is the 17.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with B in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast and San Joaquin Valley air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47258844987554,"sku":"EL297UH045XE36BK","price":2837.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/EL297UH045XE36BK.jpg?v=1788819369"},{"product_id":"lennox-el196uh045xe36bk-44-000-furnace","title":"Lennox EL196UH045XE36BK 96% AFUE 44,000 BTU 17.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox EL196UH045XE36BK is an Elite Series single-stage gas furnace rated 44,000 BTU input and 43,000 BTU output at 96% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 96% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 520 to 1,345 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 1 means single-stage, 96 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, B is the 17.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with B in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47258845446306,"sku":"EL196UH045XE36BK","price":2640.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_ded41c4c-2f29-496d-8626-cec59ec8cd97.jpg?v=1788737922"},{"product_id":"lennox-el280uh045e36ak-44-000-furnace","title":"Lennox EL280UH045E36AK 80% AFUE 44,000 BTU 14.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox EL280UH045E36AK is an Elite Series two-stage gas furnace rated 44,000 BTU input and 35,000 BTU output on high fire at 80% AFUE. It comes in a 14.5-inch A cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3.5 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 35,000 BTU output, 80% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: A size, 14.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 250 to 1,500 cfm, for 1.5 to 3.5 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 30 to 60°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 2 means two-stage, 80 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, A is the 14.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with A in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eThis model doesn't carry the X low NOx code, and Lennox says this furnace series can't go in the South Coast and San Joaquin Valley air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47258845708450,"sku":"EL280UH045E36AK","price":2268.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/EL280UH045E36AK.jpg?v=1788818734"},{"product_id":"lennox-ml296uh045xv36bk-44-000-furnace","title":"Lennox ML296UH045XV36BK 96% AFUE 44,000 BTU 17.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox ML296UH045XV36BK is a Merit Series two-stage gas furnace rated 44,000 BTU input and 42,000 BTU output on high fire at 96% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a variable speed blower sized for 2 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 42,000 BTU output, 96% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp variable speed motor, 485 to 1,370 cfm, for 2 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 2 means two-stage, 96 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, V is the variable speed blower motor, 36 is the nominal add-on cooling size, B is the 17.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with B in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47258846494882,"sku":"ML296UH045XV36BK","price":2544.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/ML296UH045XV36BK.jpg?v=1788819113"},{"product_id":"lennox-ml196uh045xe36bk-44-000-furnace","title":"Lennox ML196UH045XE36BK 96% AFUE 44,000 BTU 17.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox ML196UH045XE36BK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 43,000 BTU output at 96% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 96% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 520 to 1,345 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 96 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, B is the 17.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with B in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47258846724258,"sku":"ML196UH045XE36BK","price":2119.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/ML196UH045XE36BK.jpg?v=1788819056"},{"product_id":"lennox-ml193uh045xe36bk-44-000-furnace","title":"Lennox ML193UH045XE36BK 93% AFUE 44,000 BTU 17.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox ML193UH045XE36BK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 42,000 BTU output at 93% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 42,000 BTU output, 93% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 355 to 1,420 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 30 to 60°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 93 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, B is the 17.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with B in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47258848460962,"sku":"ML193UH045XE36BK","price":1700.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/ML193UH045XE36BK.jpg?v=1788819006"},{"product_id":"lennox-ml180uh045v36ak-44-000-furnace","title":"Lennox ML180UH045V36AK 80% AFUE 44,000 BTU 14.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox ML180UH045V36AK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 36,000 BTU output at 80% AFUE. It comes in a 14.5-inch A cabinet, installs upflow or horizontal, and has a variable speed blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 36,000 BTU output, 80% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: A size, 14.5 inches wide, upflow or horizontal (left or right)\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp variable speed motor, 380 to 1,320 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 15 to 45°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 80 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, V is the variable speed blower motor, 36 is the nominal add-on cooling size, A is the 14.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with A in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eThis model doesn't carry the X low NOx code, and Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47258848690338,"sku":"ML180UH045V36AK","price":1494.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_14a5aa22-1563-4601-8c61-c5b8d152e843.jpg?v=1788737888"},{"product_id":"lennox-ml180uh045e36ak-44-000-furnace","title":"Lennox ML180UH045E36AK 80% AFUE 44,000 BTU 14.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox ML180UH045E36AK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 36,000 BTU output at 80% AFUE. It comes in a 14.5-inch A cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 36,000 BTU output, 80% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: A size, 14.5 inches wide, upflow or horizontal (left or right)\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 350 to 1,380 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 15 to 45°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 80 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, A is the 14.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with A in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eThis model doesn't carry the X low NOx code. For California, the ML180UH045XE36AK meets the state's 40 ng\/J NOx standard, but Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47258848952482,"sku":"ML180UH045E36AK","price":1113.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/ML180UH045E36AK.jpg?v=1788818912"},{"product_id":"lennox-ml180uh045xe36ak-44-000-furnace","title":"Lennox ML180UH045XE36AK 80% AFUE 44,000 BTU 14.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox ML180UH045XE36AK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 36,000 BTU output at 80% AFUE. It comes in a 14.5-inch A cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 36,000 BTU output, 80% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: A size, 14.5 inches wide, upflow or horizontal (left or right)\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 350 to 1,380 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 15 to 45°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 80 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, A is the 14.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with A in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47258849312930,"sku":"ML180UH045XE36AK","price":2537.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/ML180UH045XE36AK.jpg?v=1788818919"},{"product_id":"lennox-el297df045xv36bk-44-000-furnace","title":"Lennox EL297DF045XV36BK 97% AFUE 44,000 BTU 17.5\" Variable-Speed Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox EL297DF045XV36BK is an Elite Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output on high fire at 97% AFUE. It comes in a 17.5-inch B cabinet, installs downflow, and has a variable speed blower sized for 2 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 97% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp variable speed motor, 545 to 1,360 cfm, for 2 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 2 means two-stage, 97 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, V is the variable speed blower motor, 36 is the nominal add-on cooling size, B is the 17.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with B in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL15KC1, EL16KC1, EL18KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast and San Joaquin Valley air districts.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627470536866,"sku":"EL297DF045XV36BK","price":3574.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_5ec31256-3482-4775-86ad-10d7090850d0.jpg?v=1788738171"},{"product_id":"lennox-el297df045xe36bk-44-000-furnace","title":"Lennox EL297DF045XE36BK 97% AFUE 44,000 BTU 17.5\" Two-Stage Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox EL297DF045XE36BK is an Elite Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output on high fire at 97% AFUE. It comes in a 17.5-inch B cabinet, installs downflow, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 97% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 485 to 1,395 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 2 means two-stage, 97 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, B is the 17.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with B in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL16KP1, EL18KSLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627470700706,"sku":"EL297DF045XE36BK","price":3395.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_265cebb3-5178-4cf8-83f6-4bb1ff7f460f.jpg?v=1788738180"},{"product_id":"lennox-ml296df045xv36bk-44-000-furnace","title":"Lennox ML296DF045XV36BK 96% AFUE 44,000 BTU 17.5\" Variable-Speed Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox ML296DF045XV36BK is a Merit Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output on high fire at 96% AFUE. It comes in a 17.5-inch B cabinet, installs downflow, and has a variable speed blower sized for 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 96% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp variable speed motor, 545 to 1,360 cfm, for 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 2 means two-stage, 96 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, V is the variable speed blower motor, 36 is the nominal add-on cooling size, B is the 17.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with B in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627470897314,"sku":"ML296DF045XV36BK","price":2635.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_d932b332-de34-4db1-91cd-a38a80e27b10.jpg?v=1788738194"},{"product_id":"lennox-ml196df045xe36bk-44-000-furnace","title":"Lennox ML196DF045XE36BK 96% AFUE 44,000 BTU 17.5\" Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox ML196DF045XE36BK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 43,000 BTU output at 96% AFUE. It comes in a 17.5-inch B cabinet, installs downflow, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 96% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 505 to 1,455 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 30 to 60°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 96 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, B is the 17.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with B in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627470995618,"sku":"ML196DF045XE36BK","price":2244.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_fd1e3f19-59f0-4124-bbc7-cbea117ef9e1.jpg?v=1788738200"},{"product_id":"lennox-ml193df045xe36bk-44-000-furnace","title":"Lennox ML193DF045XE36BK 93% AFUE 44,000 BTU 17.5\" Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox ML193DF045XE36BK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 43,000 BTU output at 93% AFUE. It comes in a 17.5-inch B cabinet, installs downflow, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 93% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 335 to 1,430 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 30 to 60°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 93 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, B is the 17.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with B in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627471159458,"sku":"ML193DF045XE36BK","price":2005.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_5095e666-cbdc-4074-9d5a-909ce99d1fa6.jpg?v=1788738209"},{"product_id":"lennox-ml180df045e36ak-44-000-furnace","title":"Lennox ML180DF045E36AK 80% AFUE 44,000 BTU 14.5\" Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox ML180DF045E36AK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 36,000 BTU output at 80% AFUE. It comes in a 14.5-inch A cabinet, installs downflow, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 36,000 BTU output, 80% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: A size, 14.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 355 to 1,430 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 15 to 45°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 80 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, A is the 14.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with A in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL15KC1, EL16KC1, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL18KSLV heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eThis model doesn't carry the X low NOx code, and Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627471454370,"sku":"ML180DF045E36AK","price":1191.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_56e4f91d-e9e4-4a71-8505-53265cda18c3.jpg?v=1788738216"},{"product_id":"lennox-el297uh045xv36b-44-000-furnace","title":"Lennox EL297UH045XV36B 97% AFUE 44,000 BTU 17.5\" Variable-Speed Gas Furnace","description":"\u003cp\u003eThe Lennox EL297UH045XV36B is an Elite Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output on high fire at 97% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a variable speed blower sized for 2 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 97% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp variable speed motor, 465 to 1,370 cfm, for 2 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 2 means two-stage, 97 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, V is the variable speed blower motor, 36 is the nominal add-on cooling size, and B is the 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with B in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627472765090,"sku":"EL297UH045XV36B","price":3352.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_a378286f-47a2-4b71-9dd9-16059339059f.jpg?v=1788738290"},{"product_id":"lennox-el297df045xv36b-44-000-furnace","title":"Lennox EL297DF045XV36B 97% AFUE 44,000 BTU 17.5\" Variable-Speed Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox EL297DF045XV36B is an Elite Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output on high fire at 97% AFUE. It comes in a 17.5-inch B cabinet, installs downflow, and has a variable speed blower sized for 2 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 97% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp variable speed motor, 545 to 1,360 cfm, for 2 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 2 means two-stage, 97 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, V is the variable speed blower motor, 36 is the nominal add-on cooling size, and B is the 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with B in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL15KC1, EL16KC1, EL18KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast and San Joaquin Valley air districts.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627473060002,"sku":"EL297DF045XV36B","price":4346.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_e3fa863e-d8eb-4e20-bf2b-da60e775585e.jpg?v=1788738305"},{"product_id":"lennox-el297uh045xe36b-44-000-furnace","title":"Lennox EL297UH045XE36B 97% AFUE 44,000 BTU 17.5\" Two-Stage Gas Furnace","description":"\u003cp\u003eThe Lennox EL297UH045XE36B is an Elite Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output on high fire at 97% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 97% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 520 to 1,345 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 30 to 60°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 2 means two-stage, 97 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, and B is the 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with B in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast and San Joaquin Valley air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627473682594,"sku":"EL297UH045XE36B","price":3129.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_945b6800-bc8f-4a8c-b5fc-87987b5ffa93.jpg?v=1788738311"},{"product_id":"lennox-el297df045xe36b-44-000-furnace","title":"Lennox EL297DF045XE36B 97% AFUE 44,000 BTU 17.5\" Two-Stage Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox EL297DF045XE36B is an Elite Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output on high fire at 97% AFUE. It comes in a 17.5-inch B cabinet, installs downflow, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 97% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 485 to 1,395 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 2 means two-stage, 97 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, and B is the 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with B in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL16KP1, EL18KSLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627473846434,"sku":"EL297DF045XE36B","price":3280.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_d66e1e88-8faf-4234-88fa-3b5973d80dfe.jpg?v=1788738320"},{"product_id":"lennox-el196uh045xe36b-44-000-furnace","title":"Lennox EL196UH045XE36B 96% AFUE 44,000 BTU 17.5\" Gas Furnace","description":"\u003cp\u003eThe Lennox EL196UH045XE36B is an Elite Series single-stage gas furnace rated 44,000 BTU input and 43,000 BTU output at 96% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 96% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 520 to 1,345 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 1 means single-stage, 96 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, and B is the 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with B in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627474043042,"sku":"EL196UH045XE36B","price":2526.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_7eb98031-f6b2-4ecb-bef2-8f4020d0298a.jpg?v=1788738333"},{"product_id":"lennox-el280uh045e36a-44-000-furnace","title":"Lennox EL280UH045E36A 80% AFUE 44,000 BTU 14.5\" Two-Stage Gas Furnace","description":"\u003cp\u003eThe Lennox EL280UH045E36A is an Elite Series two-stage gas furnace rated 44,000 BTU input and 35,000 BTU output on high fire at 80% AFUE. It comes in a 14.5-inch A cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3.5 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 35,000 BTU output, 80% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: A size, 14.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 250 to 1,500 cfm, for 1.5 to 3.5 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 30 to 60°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 2 means two-stage, 80 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, and A is the 14.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with A in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eThis model doesn't carry the X low NOx code, and Lennox says this furnace series can't go in the South Coast and San Joaquin Valley air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627474305186,"sku":"EL280UH045E36A","price":2204.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_1c15fcb6-2ee5-417c-9d03-42d9a43a3f34.jpg?v=1788738354"},{"product_id":"lennox-ml296uh045xv36b-44-000-furnace","title":"Lennox ML296UH045XV36B 96% AFUE 44,000 BTU 17.5\" Variable-Speed Gas Furnace","description":"\u003cp\u003eThe Lennox ML296UH045XV36B is a Merit Series two-stage gas furnace rated 44,000 BTU input and 42,000 BTU output on high fire at 96% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a variable speed blower sized for 2 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 42,000 BTU output, 96% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp variable speed motor, 485 to 1,370 cfm, for 2 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 2 means two-stage, 96 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, V is the variable speed blower motor, 36 is the nominal add-on cooling size, and B is the 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with B in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627474698402,"sku":"ML296UH045XV36B","price":2429.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_8406edc5-7814-43d3-b722-ba9b6d772ac8.jpg?v=1788738383"},{"product_id":"lennox-ml296df045xv36b-44-000-furnace","title":"Lennox ML296DF045XV36B 96% AFUE 44,000 BTU 17.5\" Variable-Speed Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox ML296DF045XV36B is a Merit Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output on high fire at 96% AFUE. It comes in a 17.5-inch B cabinet, installs downflow, and has a variable speed blower sized for 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 96% AFUE, two-stage, 29,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp variable speed motor, 545 to 1,360 cfm, for 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 2 means two-stage, 96 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, V is the variable speed blower motor, 36 is the nominal add-on cooling size, and B is the 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with B in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627474829474,"sku":"ML296DF045XV36B","price":2805.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_a62b9b47-2fe1-46e2-89c5-90f83ae44971.jpg?v=1788738393"},{"product_id":"lennox-ml196uh045xe36b-44-000-furnace","title":"Lennox ML196UH045XE36B 96% AFUE 44,000 BTU 17.5\" Gas Furnace","description":"\u003cp\u003eThe Lennox ML196UH045XE36B is a Merit Series single-stage gas furnace rated 44,000 BTU input and 43,000 BTU output at 96% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 96% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 520 to 1,345 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 35 to 65°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 96 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, and B is the 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with B in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627474960546,"sku":"ML196UH045XE36B","price":2004.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_723c269a-2da4-4e80-8fa9-be8d1b98ebbd.jpg?v=1788738401"},{"product_id":"lennox-ml196df045xe36b-44-000-furnace","title":"Lennox ML196DF045XE36B 96% AFUE 44,000 BTU 17.5\" Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox ML196DF045XE36B is a Merit Series single-stage gas furnace rated 44,000 BTU input and 43,000 BTU output at 96% AFUE. It comes in a 17.5-inch B cabinet, installs downflow, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 96% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 505 to 1,455 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 30 to 60°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 96 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, and B is the 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with B in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627475222690,"sku":"ML196DF045XE36B","price":2129.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_a6d0343d-f867-4238-b79f-5b3ef62bebd2.jpg?v=1788738419"},{"product_id":"lennox-ml193uh045xe36b-44-000-furnace","title":"Lennox ML193UH045XE36B 93% AFUE 44,000 BTU 17.5\" Gas Furnace","description":"\u003cp\u003eThe Lennox ML193UH045XE36B is a Merit Series single-stage gas furnace rated 44,000 BTU input and 42,000 BTU output at 93% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 42,000 BTU output, 93% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 355 to 1,420 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 30 to 60°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 93 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, and B is the 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with B in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627475386530,"sku":"ML193UH045XE36B","price":2043.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_b7782df8-2433-4df4-b534-73022520d588.jpg?v=1788738429"},{"product_id":"lennox-ml193df045xe36b-44-000-furnace","title":"Lennox ML193DF045XE36B 93% AFUE 44,000 BTU 17.5\" Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox ML193DF045XE36B is a Merit Series single-stage gas furnace rated 44,000 BTU input and 43,000 BTU output at 93% AFUE. It comes in a 17.5-inch B cabinet, installs downflow, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 43,000 BTU output, 93% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 335 to 1,430 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 30 to 60°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 93 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, and B is the 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with B in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627475583138,"sku":"ML193DF045XE36B","price":2285.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_2c0704fc-fd44-431e-910f-4409b6d0dd68.jpg?v=1788738440"},{"product_id":"lennox-ml180uh045v36a-44-000-furnace","title":"Lennox ML180UH045V36A 80% AFUE 44,000 BTU 14.5\" Variable-Speed Gas Furnace","description":"\u003cp\u003eThe Lennox ML180UH045V36A is a Merit Series single-stage gas furnace rated 44,000 BTU input and 36,000 BTU output at 80% AFUE. It comes in a 14.5-inch A cabinet, installs upflow or horizontal, and has a variable speed blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 36,000 BTU output, 80% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: A size, 14.5 inches wide, upflow or horizontal (left or right)\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp variable speed motor, 380 to 1,320 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 15 to 45°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 80 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, V is the variable speed blower motor, 36 is the nominal add-on cooling size, and A is the 14.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with A in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eThis model doesn't carry the X low NOx code, and Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627475714210,"sku":"ML180UH045V36A","price":1343.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_d6005d68-d972-4ffd-83f5-3f2ca3935f6c.jpg?v=1788738446"},{"product_id":"lennox-ml180uh045e36a-44-000-furnace","title":"Lennox ML180UH045E36A 80% AFUE 44,000 BTU 14.5\" Gas Furnace","description":"\u003cp\u003eThe Lennox ML180UH045E36A is a Merit Series single-stage gas furnace rated 44,000 BTU input and 36,000 BTU output at 80% AFUE. It comes in a 14.5-inch A cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 36,000 BTU output, 80% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: A size, 14.5 inches wide, upflow or horizontal (left or right)\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 350 to 1,380 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 15 to 45°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 80 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, and A is the 14.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with A in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eThis model doesn't carry the X low NOx code. For California, the ML180UH045XE36A meets the state's 40 ng\/J NOx standard, but Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627475976354,"sku":"ML180UH045E36A","price":1059.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_269c0b4c-0f4e-48b0-8d8e-cba18e9902c7.jpg?v=1788738458"},{"product_id":"lennox-ml180df045e36a-44-000-furnace","title":"Lennox ML180DF045E36A 80% AFUE 44,000 BTU 14.5\" Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox ML180DF045E36A is a Merit Series single-stage gas furnace rated 44,000 BTU input and 36,000 BTU output at 80% AFUE. It comes in a 14.5-inch A cabinet, installs downflow, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 36,000 BTU output, 80% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: A size, 14.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 355 to 1,430 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 15 to 45°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 80 is the AFUE, and DF is downflow. 045 is the 44,000 BTU input, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, and A is the 14.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with A in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox EL15KC1, EL16KC1, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL18KSLV heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eThis model doesn't carry the X low NOx code, and Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eIt ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627476205730,"sku":"ML180DF045E36A","price":1132.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_8b6beb0b-2172-408d-bb8c-8507bd63763b.jpg?v=1788738470"},{"product_id":"lennox-ml180uh045xe36a-44-000-furnace","title":"Lennox ML180UH045XE36A 80% AFUE 44,000 BTU 14.5\" Gas Furnace","description":"\u003cp\u003eThe Lennox ML180UH045XE36A is a Merit Series single-stage gas furnace rated 44,000 BTU input and 36,000 BTU output at 80% AFUE. It comes in a 14.5-inch A cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1.5 to 3 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 44,000 BTU input, 36,000 BTU output, 80% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: A size, 14.5 inches wide, upflow or horizontal (left or right)\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 350 to 1,380 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 15 to 45°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, 1 means single-stage, 80 is the AFUE, and UH is upflow\/horizontal. 045 is the 44,000 BTU input, X means it meets California's 40 ng\/J NOx standard, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, and A is the 14.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eCoils with the same letter physically match the furnace, so you want a Lennox coil with A in its size code, such as a CK40CT, CK40HT, or CK40UT.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40CT, CK40HT, and CK40UT coils and Lennox EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners, plus EL16KP1, EL18KSLV, EL19KPV, EL21KLV, and ML14KP1 heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eEven with the X low NOx code, Lennox says this furnace series can't go in the South Coast, San Joaquin Valley, and Bay Area air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627476369570,"sku":"ML180UH045XE36A","price":2388.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_9ef7d9a4-d9ee-42c8-b514-2774f4ca0b8c.jpg?v=1788738479"}],"url":"https:\/\/hvacusa.store\/collections\/lennox-44-000-btu-furnaces.oembed","provider":"HVAC USA","version":"1.0","type":"link"}