Comfort Glow KWD259 20,000 Btu Blue Flame Propane(LP) & Natural Gas(NG) Vent Free Wall Heater

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Comfort Glow's modern, clean burning, ambient flame design features a base blue flame with dancing yellow tips. This 20,000 BTU Propane(LP) & Natural Gas(NG) heater provides convective heat for the best whole room heating, up to 800 sq ft. This heater is 99% fuel efficient. It requires no duct work or other venting and includes a built in oxygen depletion sensor! The sleek design and neutral color fits any decor.

Due to the built in oxygen safety sensor, vent free products may not work properly at elevations above 4,500 ft. Not for sale in California or Canada. Please check your state and local codes prior to purchase.


This product and the fuel used to operate this product (liquid propane), and the products of combustion of such fuel, can expose you to chemicals including benzene, which is known to the State of California to cause cancer and reproductive harm. For more information go to:

Product Features:

  • No venting required
  • Thermostat control
  • New Smart Select™ knob provides easier, faster installation
  • Requires no electricity
  • 99% Fuel efficient
  • Safe watch pilot/ODS system
  • Provides supplemental heat
  • Optional floor stand (20-5345 - sold separately)
  • Optional blower (20-6127 - sold separately)