Pick two to four models. The best figure in each row is marked, and every number comes from the maker, NEEP or ENERGY STAR. Copy the URL to share a comparison.
Dr. Infrared Heater DR-975 7,500W Hardwired Garage Heater
Heatstar 18,000 BTU Vent-Free Radiant Propane Heater with Thermostat and Blower
Photo
Our score
SCORE6.6 / 10
Not reviewed yet
Our take
The 7,500 W ceiling heater to buy for its 4,700 W low setting, which suits mild days better than the CZ230ER's 6,250 W low. It needs a licensed electrician, a 40 A circuit and 8 AWG copper, and its remote thermostat stops at 50°F.
A fixed vent-free heater that adds the thermostat and blower the Big Buddy lacks, for a cabin you heat all winter. It's an installed heater, so its own manual sets the fuel supply, room size and venting rules.
Type
240V garage heater
Vent-free propane
Max heat output
25,597 BTU/h
18,000 BTU/h
Electric rating
7,500 W
n/a
Fuel / power
240V electric
Propane
Indoor use per manual
Not for residential or household use
n/a
Thermostat
Yes
Yes
Warranty
1 yr
n/a
Watch out for
Not for areas where gasoline, paint or flammable vapors and liquids are used or stored. Not a residential or household heater, per its manual. HIGH/LOW can only be changed while the heater is heating.
We haven't read this heater's manual; check its room-size and ventilation limits before you buy. Never run an unvented fuel-burning heater in a room where people sleep (CPSC). The low-oxygen shutoff does not detect carbon monoxide; run a battery CO alarm listed to UL 2034 wherever the heater runs.
