{"title":"40,000 BTU 80% AFUE Furnaces","description":"","products":[{"product_id":"trane-s8v2a040m3pcba-40-000-furnace","title":"Trane S8V2A040M3PCBA 80% AFUE 40,000 BTU Furnace","description":"\u003cp\u003eThe Trane S8V2A040M3PCBA is an 80% AFUE gas furnace rated 40,000 BTU. Cabinet width is 14.5 inches.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: S8V2A040M3PCBA\u003c\/li\u003e\n\u003cli\u003eBrand: Trane\u003c\/li\u003e\n\u003cli\u003eType: Furnace\u003c\/li\u003e\n\u003cli\u003eEfficiency: 80% AFUE\u003c\/li\u003e\n\u003cli\u003eInput: 40,000 BTU\u003c\/li\u003e\n\u003cli\u003eCabinet width: 14.5 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":46319602696354,"sku":"S8V2A040M3PCBA","price":2516.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_6e435536-a63c-4acb-8cc8-ad5c01ab2071.png?v=1763401656"},{"product_id":"trane-s8x2a040m3psca-40-000-furnace","title":"Trane S8X2A040M3PSCA 80% AFUE 40,000 BTU Furnace","description":"\u003cp\u003eSpec snapshot for Trane S8X2A040M3PSCA - 80% AFUE, 40,000 BTU, 14.5-inch width.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: S8X2A040M3PSCA\u003c\/li\u003e\n\u003cli\u003eBrand: Trane\u003c\/li\u003e\n\u003cli\u003eType: Furnace\u003c\/li\u003e\n\u003cli\u003eEfficiency: 80% AFUE\u003c\/li\u003e\n\u003cli\u003eInput: 40,000 BTU\u003c\/li\u003e\n\u003cli\u003eCabinet width: 14.5 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":46319602958498,"sku":"S8X2A040M3PSCA","price":1988.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_1757521c-c73d-4b5b-8293-8e53280de7f3.png?v=1763401650"},{"product_id":"trane-s8x1a040m3pscc-40-000-furnace","title":"Trane S8X1A040M3PSCC 80% AFUE 40,000 BTU Furnace","description":"\u003cp\u003eThe S8X1A040M3PSCC gas furnace from Trane is 80% AFUE and 40,000 BTU. in a 14.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: S8X1A040M3PSCC\u003c\/li\u003e\n\u003cli\u003eBrand: Trane\u003c\/li\u003e\n\u003cli\u003eType: Furnace\u003c\/li\u003e\n\u003cli\u003eEfficiency: 80% AFUE\u003c\/li\u003e\n\u003cli\u003eInput: 40,000 BTU\u003c\/li\u003e\n\u003cli\u003eCabinet width: 14.5 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":46319603581090,"sku":"S8X1A040M3PSCC","price":1617.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_030d616a-a3e5-4598-833d-e7567ae7262d.png?v=1763401646"},{"product_id":"trane-s8x1b040m2pscc-40-000-furnace","title":"Trane S8X1B040M2PSCC 80% AFUE 40,000 BTU Furnace","description":"\u003cp\u003eThe Trane S8X1B040M2PSCC is an 80% AFUE gas furnace rated 40,000 BTU. Cabinet width is 17.5 inches.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: S8X1B040M2PSCC\u003c\/li\u003e\n\u003cli\u003eBrand: Trane\u003c\/li\u003e\n\u003cli\u003eType: Furnace\u003c\/li\u003e\n\u003cli\u003eEfficiency: 80% 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":46319603843234,"sku":"S8X1B040M2PSCC","price":1576.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_3a909aea-7b2b-4c29-a075-82534c7d3a6d.png?v=1763401649"},{"product_id":"trane-s8b1a040m3pscc-40-000-furnace","title":"Trane S8B1A040M3PSCC 80% AFUE 40,000 BTU Furnace","description":"\u003cp\u003eTrane S8B1A040M3PSCC: 80% AFUE, 40,000 BTU input. Width 14.5 inches.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: S8B1A040M3PSCC\u003c\/li\u003e\n\u003cli\u003eBrand: Trane\u003c\/li\u003e\n\u003cli\u003eType: Furnace\u003c\/li\u003e\n\u003cli\u003eEfficiency: 80% AFUE\u003c\/li\u003e\n\u003cli\u003eInput: 40,000 BTU\u003c\/li\u003e\n\u003cli\u003eCabinet width: 14.5 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":46319604072610,"sku":"S8B1A040M3PSCC","price":1375.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_898f86a7-3c15-49ea-8d07-0fdbe93e7ec2.png?v=1763401639"},{"product_id":"trane-s8b1b040m2pscc-40-000-furnace","title":"Trane S8B1B040M2PSCC 80% AFUE 40,000 BTU Furnace","description":"\u003cp\u003eThis gas furnace (S8B1B040M2PSCC) runs at 80% AFUE with 40,000 BTU input. 17.5-inch cabinet.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: S8B1B040M2PSCC\u003c\/li\u003e\n\u003cli\u003eBrand: Trane\u003c\/li\u003e\n\u003cli\u003eType: Furnace\u003c\/li\u003e\n\u003cli\u003eEfficiency: 80% 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":46319604105378,"sku":"S8B1B040M2PSCC","price":1336.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_c5386eee-bc05-432b-ad9e-c09d2c9d4938.png?v=1763401637"},{"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-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-ml180uh030v36ak-30-000-furnace","title":"Lennox ML180UH030V36AK 80% AFUE 30,000 BTU 14.5\" Wide Furnace","description":"\u003cp\u003eThe Lennox ML180UH030V36AK is a Merit Series single-stage gas furnace rated 30,000 BTU input and 24,000 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: 30,000 BTU input, 24,000 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: 25 to 55°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. 030 is the 30,000 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":47258848657570,"sku":"ML180UH030V36AK","price":1362.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_5d668f80-7d87-4c08-9d61-8bee952ffb53.jpg?v=1788737889"},{"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-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-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-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"},{"product_id":"lennox-ml180uh030v36a-30-000-furnace","title":"Lennox ML180UH030V36A 80% AFUE 30,000 BTU 14.5\" Variable-Speed Gas Furnace","description":"\u003cp\u003eThe Lennox ML180UH030V36A is a Merit Series single-stage gas furnace rated 30,000 BTU input and 24,000 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: 30,000 BTU input, 24,000 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: 25 to 55°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. 030 is the 30,000 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":47627475681442,"sku":"ML180UH030V36A","price":1298.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_04580726-e25f-4526-bb72-fd393666ba4b.jpg?v=1788738445"},{"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\/40-000-btu-80-afue-furnaces.oembed","provider":"HVAC USA","version":"1.0","type":"link"}