Compare tool
Compare models side by side
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.
All mini-splits & heat pumps ranked →All dehumidifiers ranked →All window, wall & room units ranked →All heating ranked →All parts, tools & supplies ranked →
| Spec | Comfort Zone CZ220 5,000W Ceiling-Mount Garage Heater | Mr. Heater Big Buddy 18,000 BTU (MH18B, no fan) |
|---|---|---|
| Photo |  |  |
| Our score | SCORE7.0 / 10 | SCORE7.0 / 10 |
| Our take | Our default for a one- or two-car garage heated in sessions: 5,000 W with 4,000 and 3,000 W steps, hung from a joist. The knob thermostat has no published range, and like every electric heater here it can't share the garage with gas cans or paint. | 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. |
| Type | 240V garage heater | Portable propane |
| Max heat output | 17,060 BTU/h | 18,000 BTU/h |
| Electric rating | 5,000 W | n/a |
| Fuel / power | 240V electric | Propane |
| Indoor use per manual | Indoor, dry locations only | Recreational enclosures + emergency, 1 lb only |
| Thermostat | Yes | No |
| Warranty | 1 yr | n/a |
| Watch out for | 1-year warranty; after 30 days the heater ships to World and Main freight prepaid. One amp figure covers 208-240V; on 208V the heater makes less heat, and Comfort Zone doesn't publish how much. | 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. |
| More | Model detailsOur full reviewView on Amazon → | Model detailsOur full reviewView on Amazon → |