Lennox 44,000 BTU Furnaces
Lennox gas furnaces at 44,000 BTU input, in Merit ML180, ML193, ML196, and ML296 and Elite EL196, EL280, and EL297 models.
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Quick view Lennox ML180DF045E36AK 80% AFUE 44,000 BTU 14.5" Downflow Gas Furnace
The Lennox ML180DF045E36AK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 36,000 BTU output...Regular price $1,191.04Sale price $1,191.04 Regular price -
Quick view Lennox ML193DF045XE36BK 93% AFUE 44,000 BTU 17.5" Downflow Gas Furnace
The Lennox ML193DF045XE36BK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 43,000 BTU output...Regular price $2,005.97Sale price $2,005.97 Regular price -
Quick view Lennox ML196DF045XE36BK 96% AFUE 44,000 BTU 17.5" Downflow Gas Furnace
The Lennox ML196DF045XE36BK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 43,000 BTU output...Regular price $2,244.78Sale price $2,244.78 Regular price -
Quick view Lennox ML296DF045XV36BK 96% AFUE 44,000 BTU 17.5" Variable-Speed Downflow Gas Furnace
The Lennox ML296DF045XV36BK is a Merit Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output...Regular price $2,635.82Sale price $2,635.82 Regular price -
Quick view Lennox EL297DF045XE36BK 97% AFUE 44,000 BTU 17.5" Two-Stage Downflow Gas Furnace
The Lennox EL297DF045XE36BK is an Elite Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output...Regular price $3,395.52Sale price $3,395.52 Regular price -
Quick view Lennox EL297DF045XV36BK 97% AFUE 44,000 BTU 17.5" Variable-Speed Downflow Gas Furnace
The Lennox EL297DF045XV36BK is an Elite Series two-stage gas furnace rated 44,000 BTU input and 43,000 BTU output...Regular price $3,574.63Sale price $3,574.63 Regular price -
Quick view Lennox ML180UH045XE36AK 80% AFUE 44,000 BTU 14.5" Wide Furnace
The Lennox ML180UH045XE36AK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 36,000 BTU output...Regular price $2,537.31Sale price $2,537.31 Regular price -
Quick view Lennox ML180UH045E36AK 80% AFUE 44,000 BTU 14.5" Wide Furnace
The Lennox ML180UH045E36AK is a Merit Series single-stage gas furnace rated 44,000 BTU input and 36,000 BTU output...Regular price $1,113.43Sale price $1,113.43 Regular price
Ratings run 80% to 97% AFUE, in 14.5 and 17.5 inch upflow/horizontal (UH) and downflow (DF) versions.
Choosing a 44,000 BTU Lennox furnace
The ML180 and EL280 are 80% AFUE and typically vent through a metal flue, which often makes for a simpler swap when you're replacing another 80% furnace. The ML193, ML196, ML296, EL196, and EL297 are condensing furnaces, so plan for PVC venting and a condensate drain. The ML180, ML193, ML196, and EL196 are single-stage. The ML296, EL280, and EL297 are two-stage, with a low stage for milder days. Size the furnace from a load calculation, then match the cabinet width to your space and your evaporator coil.
To compare by efficiency, see Lennox 80%, 93%, 96%, and 97% AFUE furnaces. Need a different size? See Lennox 40,000 BTU furnaces and Lennox 60,000 BTU furnaces.
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. 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.
Get Expert Help
Not sure which of these systems is right for your application? Our team can help you compare models, sizes, and configurations to ensure the best fit for your climate and space.
Reach out to us at (913) 364-0070 or info@hvacusa.store. Reach out to find the right system to help you experience the long-term reliability and performance that Lennox 44,000 BTU Furnaces are known for.