Mr. Heater 20,000 BTU Vent Free Radiant Natural Gas Heater - F299821
Mr. Heater 20,000 BTU Vent Free Radiant Natural Gas Heater - F299821
This radiant 20,000 BTU natural gas vent free heater provides supplemental heating and heats up to 700 sq ft. It includes a thermostat for automatic temperature control and battery-powered electronic ignition.
The unit can be permanently mounted to a wall or fastened to the floor with the included mounting brackets and fasteners.
Radiant heat burner
Multiple burner tiles
Automatic low oxygen shut-off system (ODS)
Battery included
Shipping, returns & fit
Shipping is free on U.S. orders of $75 or more; orders under $75 ship for a flat $5.95. We currently ship to U.S. addresses only.
Orders are picked and packed within 1-2 business days. Once shipped, delivery normally takes another 3-7 business days, and you'll receive a tracking link by email. Full details on our Shipping Policy.
You have 30 days from delivery to return any unworn item with tags in its original packaging. Return postage is paid by the buyer, unless your item arrived damaged, wrong, or never arrived — in those cases we replace it or refund you in full and cover the postage.
Approved refunds go back to your original payment method within 5–10 business days. See the full Refund Policy.
Sizes, quantities and compatible finishes are listed on this page. Not sure what is safe for your wheel? Email us a photo and we will point you to the right product. Professional-grade detailing supply. Always test on a small area first and follow the directions on the label.
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