comfort matters
lennox innovation

The history of cool.

Beginning with the introduction of the world's first riveted-steel furnace in 1895, Lennox has focused on delivering on the values of trust, innovation and quality. Since 1952, Lennox has been designing and developing innovative air conditioner units that have made people's homes and lives more comfortable and energy efficient.


Dave Lennox builds and markets the world's first riveted-steel furnace.


Lennox expands its product line with the introduction of quality-built residential central air-conditioning systems.


Lennox increases air-conditioning efficiency with the development of a two-speed hermetic compressor.


Always innovating, Lennox is the first HVAC manufacturer to produce solar-powered air conditioners.


Lennox introduces the first air conditioner to achieve an efficiency rating of 15.00 SEER.


Leading the industry, Lennox introduces the first air conditioner to achieve a 19.20 SEER efficiency rating.


Lennox launches Healthy Climate Solutions, which work with HVAC systems to combat indoor air quality issues.


Lennox introduces the XC25. With efficiencies of up to 26 SEER, it's the most precise and efficient air conditioner available.


Lennox launches the iComfort® S30 ultra smart thermostat, helping homeowners maximize the efficiency of their air conditioner units.


Lennox continues to design innovative and technologically advanced air conditioner units that lead the way in comfort and efficiency.

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