{"title":"40,000 BTU 97% AFUE Furnaces","description":"","products":[{"product_id":"trane-s9v2b040u3vsba-40-000-furnace","title":"Trane S9V2B040U3VSBA 97% AFUE 40,000 BTU Furnace","description":"\u003cp\u003eSpec snapshot for Trane S9V2B040U3VSBA - 97% AFUE, 40,000 BTU, 17.5-inch width.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: S9V2B040U3VSBA\u003c\/li\u003e\n\u003cli\u003eBrand: Trane\u003c\/li\u003e\n\u003cli\u003eType: Furnace\u003c\/li\u003e\n\u003cli\u003eEfficiency: 97% AFUE\u003c\/li\u003e\n\u003cli\u003eInput: 40,000 BTU\u003c\/li\u003e\n\u003cli\u003eCabinet width: 17.5 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCall (913) 364-0070 - we'll size it, draft your order, then you buy online.\u003c\/p\u003e","brand":"Trane","offers":[{"title":"Default Title","offer_id":46319600533666,"sku":"S9V2B040U3VSBA","price":3569.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_29ce8ccc-82fe-4168-ae7d-6a4612ed4678.png?v=1763401680"},{"product_id":"trane-s9v2b040d3vsbb-40-000-furnace","title":"Trane S9V2B040D3VSBB 97% AFUE 40,000 BTU Furnace","description":"\u003cp\u003eThe S9V2B040D3VSBB gas furnace from Trane is 97% AFUE and 40,000 BTU. in a 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: S9V2B040D3VSBB\u003c\/li\u003e\n\u003cli\u003eBrand: Trane\u003c\/li\u003e\n\u003cli\u003eType: Furnace\u003c\/li\u003e\n\u003cli\u003eEfficiency: 97% AFUE\u003c\/li\u003e\n\u003cli\u003eInput: 40,000 BTU\u003c\/li\u003e\n\u003cli\u003eCabinet width: 17.5 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCall (913) 364-0070 - we'll size it, draft your order, then you buy online.\u003c\/p\u003e","brand":"Trane","offers":[{"title":"Default Title","offer_id":46319605547170,"sku":"S9V2B040D3VSBB","price":3663.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_d822663f-934e-4e79-bd57-c950c331deee.png?v=1763401628"},{"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-sl297uh040nv36bk-40-000-furnace","title":"Lennox SL297UH040NV36BK 97.5% AFUE 40,000 BTU 17.5\" Variable-Speed Gas Furnace","description":"\u003cp\u003eLennox SL297UH040NV36BK: 97.5% AFUE, 40,000 BTU input. Dave Lennox Signature. Variable-speed operation. Width 17.5 inches. Upflow\/horizontal.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: SL297UH040NV36BK\u003c\/li\u003e\n\u003cli\u003eBrand: Lennox\u003c\/li\u003e\n\u003cli\u003eType: Furnace\u003c\/li\u003e\n\u003cli\u003eEfficiency: 97.5% AFUE\u003c\/li\u003e\n\u003cli\u003eInput: 40,000 BTU\u003c\/li\u003e\n\u003cli\u003eCabinet width: 17.5 inches\u003c\/li\u003e\n\u003cli\u003eStaging \/ motor: variable-speed\u003c\/li\u003e\n\u003cli\u003eConfiguration: upflow\/horizontal\u003c\/li\u003e\n\u003cli\u003eSeries: Dave Lennox Signature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCall (913) 364-0070 - we'll size it, draft your order, then you buy online.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627469357218,"sku":"SL297UH040NV36BK","price":7611.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_fd72ed0d-f0aa-4a10-95df-5a1e5e9cfc17.jpg?v=1788738066"},{"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-sl297uh040nv36b-40-000-furnace","title":"Lennox SL297UH040NV36B 97.5% AFUE 40,000 BTU 17.5\" Variable-Speed Gas Furnace","description":"\u003cp\u003eLennox SL297UH040NV36B: 97.5% AFUE, 40,000 BTU input. Dave Lennox Signature. Variable-speed operation. Width 17.5 inches. Upflow\/horizontal.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: SL297UH040NV36B\u003c\/li\u003e\n\u003cli\u003eBrand: Lennox\u003c\/li\u003e\n\u003cli\u003eType: Furnace\u003c\/li\u003e\n\u003cli\u003eEfficiency: 97.5% AFUE\u003c\/li\u003e\n\u003cli\u003eInput: 40,000 BTU\u003c\/li\u003e\n\u003cli\u003eCabinet width: 17.5 inches\u003c\/li\u003e\n\u003cli\u003eStaging \/ motor: variable-speed\u003c\/li\u003e\n\u003cli\u003eConfiguration: upflow\/horizontal\u003c\/li\u003e\n\u003cli\u003eSeries: Dave Lennox Signature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCall (913) 364-0070 - we'll size it, draft your order, then you buy online.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627471978658,"sku":"SL297UH040NV36B","price":8059.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_5fae766d-a96e-4939-98b4-0c9d75da71f9.jpg?v=1788738247"},{"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"}],"url":"https:\/\/hvacusa.store\/collections\/40-000-btu-97-afue-furnaces.oembed?page=2","provider":"HVAC USA","version":"1.0","type":"link"}