LF25 Unit Heater

Designed for Excellence, the all new LF25 Unit Heaters are made to heat residential spaces.

Here are some of the top features of the LF25:

  • Ideal for a wide range of residential applications, from 30,000 – 105,000 BTUh
  • Provides warmth for a 1 car up to a 4+ car garage application*
  • Keep your ceilings intact with sidewall venting that eliminates roof penetrations
  • Quick, easy installation for your Lennox® Dealer/Installer with 180-degree mounting capability
  • Keeps your garage or workshop comfortable regardless of outside weather conditions.
  • Provides warmth for a 1 car up to a 4+ car garage application.
  • Uniform heat distribution with a tubular heat exchanger and other advanced components.
  • Quick, easy installation by a Lennox® dealer/installer.
  • 10-year limited warranty on heat exchanger, 5-year limited warranty on remaining covered components
  • Up to 84% thermal efficiency





  • 15-Year Limited Warranty on stainless steel heat exchanger
  • 10-Year Limited Warranty on aluminized heat exchanger
  • 1-Year Limited Warranty on covered components

*Sizing application is provided as an example only. Consult your local Lennox dealer for actual requirements.