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SpecHeatstar 18,000 BTU Vent-Free Radiant Propane Heater with Thermostat and BlowerMr. Heater Big Buddy 18,000 BTU (MH18B, no fan)
PhotoHeatstar 18,000 BTU Vent-Free Radiant Propane Heater with Thermostat and BlowerMr. Heater Big Buddy 18,000 BTU (MH18B, no fan)
Our scoreNot reviewed yetSCORE7.0 / 10
Our takeA 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.A good heater for blinds, shelters, camp and outages on 1 lb cylinders, with a low-oxygen shutoff and tip-over switch. A closed garage isn't on its manual's indoor list, and there's no thermostat or fan.
TypeVent-free propanePortable propane
Max heat output18,000 BTU/h18,000 BTU/h
Fuel / powerPropanePropane
Indoor use per manualn/aRecreational enclosures + emergency, 1 lb only
ThermostatYesNo
Watch out forWe 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.The Massachusetts and Canada version (F274806) ships with a manual that says For Outdoor Use Only; check for F274805 before using it indoors. Not for use in a dwelling home in California, per the US manual. The low-oxygen shutoff does not detect carbon monoxide; run a battery CO alarm listed to UL 2034 wherever the heater runs. Using third-party attachments or cooking on it voids the warranty.
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