Lennox Signature Furnaces
Dave Lennox Signature Collection gas furnaces, Lennox's top line, from 60,000 to 132,000 BTU. The SL280 is an 80% AFUE two-stage furnace, and the SL297 is rated 97.5% AFUE.
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Quick view Lennox SL280DF080NV60C 80% AFUE 80,000 BTU 21" Variable-Speed Downflow Gas Furnace
The Lennox SL280DF080NV60C is a Dave Lennox Signature Collection two-stage gas furnace rated 80,000 BTU input and 64,000...Regular price $8,656.72Sale price $8,656.72 Regular price -
Quick view Lennox SL280UH090XV48B 80% AFUE 88,000 BTU 17.5" Variable-Speed Gas Furnace
The Lennox SL280UH090XV48B is a Dave Lennox Signature Collection two-stage gas furnace rated 88,000 BTU input and 70,000...Regular price $2,726.87Sale price $2,726.87 Regular price -
Quick view Lennox SL280DF090V48B 80% AFUE 88,000 BTU 17.5" Variable-Speed Downflow Gas Furnace
The Lennox SL280DF090V48B is a Dave Lennox Signature Collection two-stage gas furnace rated 88,000 BTU input and 69,000...Regular price $3,238.81Sale price $3,238.81 Regular price -
Quick view Lennox SL280UH090V48B 80% AFUE 88,000 BTU 17.5" Variable-Speed Gas Furnace
The Lennox SL280UH090V48B is a Dave Lennox Signature Collection two-stage gas furnace rated 88,000 BTU input and 70,000...Regular price $2,740.30Sale price $2,740.30 Regular price -
Quick view Lennox SL280UH110XV60C 80% AFUE 110,000 BTU 21" Variable-Speed Gas Furnace
The Lennox SL280UH110XV60C is a Dave Lennox Signature Collection two-stage gas furnace rated 110,000 BTU input and 87,000...Regular price $2,850.75Sale price $2,850.75 Regular price -
Quick view Lennox SL280DF090V60C 80% AFUE 88,000 BTU 21" Variable-Speed Downflow Gas Furnace
The Lennox SL280DF090V60C is a Dave Lennox Signature Collection two-stage gas furnace rated 88,000 BTU input and 70,000...Regular price $3,325.37Sale price $3,325.37 Regular price -
Quick view Lennox SL280DF070V36A 80% AFUE 66,000 BTU 14.5" Variable-Speed Downflow Gas Furnace
The Lennox SL280DF070V36A is a Dave Lennox Signature Collection two-stage gas furnace rated 66,000 BTU input and 52,000...Regular price $2,840.30Sale price $2,840.30 Regular price -
Quick view Lennox SL280UH110V60C 80% AFUE 110,000 BTU 21" Variable-Speed Gas Furnace
The Lennox SL280UH110V60C is a Dave Lennox Signature Collection two-stage gas furnace rated 110,000 BTU input and 87,000...Regular price $3,071.64Sale price $3,071.64 Regular price
Cabinets come in 14.5 to 24.5 inch widths.
Choosing a Signature furnace
Both models are two-stage, so they run on a low stage most of the time and step up on the coldest days. The SL280 typically vents through a metal flue. The SL297 is a condensing furnace that vents through PVC and needs a condensate drain. Comparing lines? See Lennox Elite 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 Signature Furnaces are known for.