Lennox 2 Stage Furnaces
Lennox two-stage gas furnaces from 44,000 to 132,000 BTU, rated 80% to 97.5% AFUE.
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Quick view Lennox SL280UH090V36B 80% AFUE 88,000 BTU 17.5" Variable-Speed Gas Furnace
The Lennox SL280UH090V36B is a Dave Lennox Signature Collection two-stage gas furnace rated 88,000 BTU input and 70,000...Regular price $2,611.94Sale price $2,611.94 Regular price -
Quick view Lennox SL280UH070V36A 80% AFUE 66,000 BTU 14.5" Variable-Speed Gas Furnace
The Lennox SL280UH070V36A is a Dave Lennox Signature Collection two-stage gas furnace rated 66,000 BTU input and 52,000...Regular price $2,502.99Sale price $2,502.99 Regular price -
Quick view Lennox SL297UH080NV60C 97.5% AFUE 80,000 BTU 21" Variable-Speed Gas Furnace
The Lennox SL297UH080NV60C is a Dave Lennox Signature Collection two-stage gas furnace rated 80,000 BTU input and 78,000...Regular price $9,552.24Sale price $9,552.24 Regular price -
Quick view Lennox ML296DF090XV60CK 96% AFUE 88,000 BTU 21" Variable-Speed Downflow Gas Furnace
The Lennox ML296DF090XV60CK is a Merit Series two-stage gas furnace rated 88,000 BTU input and 85,000 BTU output...Regular price $3,073.13Sale price $3,073.13 Regular price -
Quick view Lennox ML296DF070XV48BK 96% AFUE 66,000 BTU 17.5" Variable-Speed Downflow Gas Furnace
The Lennox ML296DF070XV48BK is a Merit Series two-stage gas furnace rated 66,000 BTU input and 64,000 BTU output...Regular price $2,864.18Sale price $2,864.18 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 EL280DF090E48BK 80% AFUE 88,000 BTU 17.5" Two-Stage Downflow Gas Furnace
The Lennox EL280DF090E48BK is an Elite Series two-stage gas furnace rated 88,000 BTU input and 69,000 BTU output...Regular price $2,791.04Sale price $2,791.04 Regular price -
Quick view Lennox EL280DF070E36AK 80% AFUE 66,000 BTU 14.5" Two-Stage Downflow Gas Furnace
The Lennox EL280DF070E36AK is an Elite Series two-stage gas furnace rated 66,000 BTU input and 52,000 BTU output...Regular price $2,550.75Sale price $2,550.75 Regular price
The lineup covers the Merit ML296, the Elite EL280 and EL297, and the Dave Lennox Signature Collection SL280 and SL297, in 14.5 to 24.5 inch cabinets.
Why two stages
A two-stage furnace runs on a low stage most of the time and steps up to full heat on the coldest days, which gives you longer, steadier cycles than a single-stage unit. Pick 80% AFUE (EL280, SL280) if you're keeping a metal flue, or 96% to 97.5% AFUE (ML296, EL297, SL297) if you can vent with PVC and drain condensate. Want simpler controls? See Lennox single-stage 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 2 Stage Furnaces are known for.