{"title":"Lennox 40,000 BTU Furnaces","description":"\u003cdiv class=\"hvac-desc-lead\"\u003e\n\u003cp\u003eLennox gas furnaces at 40,000 BTU input, in Elite EL180 and EL195 models. Ratings run 80% to 95% AFUE, in 14.5 and 17.5 inch upflow\/horizontal (UH) cabinets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hvac-desc-more\"\u003e\n\u003ch2\u003eChoosing a 40,000 BTU Lennox furnace\u003c\/h2\u003e\n\u003cp\u003eThe EL180 is 80% AFUE and typically vents through a metal flue, which often makes for a simpler swap when you're replacing another 80% furnace. The EL195 is a condensing furnace, so plan for PVC venting and a condensate drain. Every model here is single-stage, so it runs at full heat whenever it's on. 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 and \u003ca href=\"\/collections\/lennox-95-afue-furnaces\"\u003e95%\u003c\/a\u003e AFUE furnaces. Need a different size? See \u003ca href=\"\/collections\/lennox-30-000-btu-furnaces\"\u003eLennox 30,000 BTU furnaces\u003c\/a\u003e and \u003ca href=\"\/collections\/lennox-44-000-btu-furnaces\"\u003eLennox 44,000 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-el195uh040ne36bk-40-000-furnace","title":"Lennox EL195UH040NE36BK 95% AFUE 40,000 BTU 17.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox EL195UH040NE36BK is an Elite Series single-stage gas furnace rated 40,000 BTU input and 39,000 BTU output at 95% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1 to 2 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 40,000 BTU input, 39,000 BTU output, 95% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal (left or right)\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 260 to 990 cfm, for 1 to 2 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\u003eEL is Lennox's Elite line, 1 means single-stage, 95 is the AFUE, and UH is upflow\/horizontal. 040 is the 40,000 BTU input, N means it meets California's 14 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 EL16KC1, EL18KCV, EL22KCV, 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\u003eBecause it meets the 14 ng\/J limit, Lennox approves it for 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":47258845577378,"sku":"EL195UH040NE36BK","price":5820.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_3ee48780-e7b5-463c-b9cd-b578a956dbcf.jpg?v=1788737919"},{"product_id":"lennox-el180uh040ne36ak-40-000-furnace","title":"Lennox EL180UH040NE36AK 80% AFUE 40,000 BTU 14.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox EL180UH040NE36AK is an Elite Series single-stage gas furnace rated 40,000 BTU input and 33,000 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: 40,000 BTU input, 33,000 BTU output, 80% AFUE, single-stage\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, 350 to 1,380 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 20 to 50°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, 80 is the AFUE, and UH is upflow\/horizontal. 040 is the 40,000 BTU input, N means it meets California's 14 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 EL16KC1, EL18KCV, EL22KCV, 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\u003eBecause it meets the 14 ng\/J limit, Lennox approves it for 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":47258846363810,"sku":"EL180UH040NE36AK","price":5074.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_f8bec824-e342-4538-b06a-b46016d71548.jpg?v=1788737908"},{"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-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-el195uh040ne36b-40-000-furnace","title":"Lennox EL195UH040NE36B 95% AFUE 40,000 BTU 17.5\" Gas Furnace","description":"\u003cp\u003eThe Lennox EL195UH040NE36B is an Elite Series single-stage gas furnace rated 40,000 BTU input and 39,000 BTU output at 95% AFUE. It comes in a 17.5-inch B cabinet, installs upflow or horizontal, and has a constant torque blower sized for 1 to 2 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 40,000 BTU input, 39,000 BTU output, 95% AFUE, single-stage\u003c\/li\u003e\n\u003cli\u003eCabinet: B size, 17.5 inches wide, upflow or horizontal (left or right)\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 260 to 990 cfm, for 1 to 2 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\u003eEL is Lennox's Elite line, 1 means single-stage, 95 is the AFUE, and UH is upflow\/horizontal. 040 is the 40,000 BTU input, N means it meets California's 14 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 EL16KC1, EL18KCV, EL22KCV, 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\u003eBecause it meets the 14 ng\/J limit, Lennox approves it for 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":47627474174114,"sku":"EL195UH040NE36B","price":5522.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_0aae3037-7d77-4e29-867a-97e06e79ef4f.jpg?v=1788738346"},{"product_id":"lennox-el180uh040ne36a-40-000-furnace","title":"Lennox EL180UH040NE36A 80% AFUE 40,000 BTU 14.5\" Gas Furnace","description":"\u003cp\u003eThe Lennox EL180UH040NE36A is an Elite Series single-stage gas furnace rated 40,000 BTU input and 33,000 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: 40,000 BTU input, 33,000 BTU output, 80% AFUE, single-stage\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, 350 to 1,380 cfm, for 1.5 to 3 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 20 to 50°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, 80 is the AFUE, and UH is upflow\/horizontal. 040 is the 40,000 BTU input, N means it meets California's 14 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 EL16KC1, EL18KCV, EL22KCV, 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\u003eBecause it meets the 14 ng\/J limit, Lennox approves it for 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":47627474567330,"sku":"EL180UH040NE36A","price":4925.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_b4b2ddfd-8c4b-45e9-856e-5a588efaa770.jpg?v=1788738374"}],"url":"https:\/\/hvacusa.store\/collections\/lennox-40-000-btu-furnaces.oembed","provider":"HVAC USA","version":"1.0","type":"link"}