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The best garage heaters turn a freezing two-car garage into a usable workshop, home gym or project space all winter. A plug-in space heater rarely keeps up with an uninsulated slab and a big overhead door, so this guide focuses on 240-volt electric units, infrared heaters, propane heaters and vented natural gas models built for the job. We compared specs, expert testing and owner reviews of current models from Comfort Zone, Fahrenheat, Dr. Infrared, Dyna-Glo, Mr. Heater and Briza to pick nine for different garages and budgets.
Part of our Home Comfort, Backup Power & Tool Guides.
Quick picks
| Product | Best for | Price range | |
|---|---|---|---|
| Comfort Zone 7,500W Ceiling-Mount Garage Heater | Best overall | $$ | See price |
| Fahrenheat FUH54 Electric Garage Heater | Compact ceiling mount | $$ | See price |
| Dr. Infrared Heater DR-966 240V Garage Heater | Wall or ceiling, 3,000/6,000W | $$ | See price |
| Dyna-Glo 10,000W Electric Garage Heater | Big garages, all-season fan | $$$ | See price |
| Dr. Infrared Heater DR-988 Portable Industrial Heater | Portable 240V | $$ | See price |
| Mr. Heater Big Maxx MHU50NG Natural Gas Heater | Natural gas homes | $$$$ | See price |
| Mr. Heater Big Buddy Pro MH18B Propane Heater | Portable, no outlet needed | $ | See price |
| Mr. Heater MH60QFAV Forced-Air Propane Heater | Fast heat for big spaces | $ | See price |
| Briza Infrared Electric Heater | Garage gyms, 120V | $-$$ | See price |
Price tiers: $ = under $150, $$ = $150 to $300, $$$ = $300 to $500, $$$$ = over $500. Prices change often, so check the current price before you buy. Installation, wiring and gas work are extra.
1. Comfort Zone 7,500W Ceiling-Mount Garage Heater: Best Overall
Bob Vila’s testers picked Comfort Zone’s 7,500-watt ceiling-mounted heater as their best overall garage heater, and it’s easy to see why. It throws enough forced-air heat for a typical two-car garage, mounts up and out of the way, and can be hardwired or run from a 30-amp, 240-volt receptacle. Temperature control is simple and the front grill comes off for cleaning. Popular Mechanics also named a similar 7,500-watt, 240-volt ceiling heater its best all-around choice.
Key specs
- 7,500 watts, 240 volts
- Forced air with adjustable louvers
- Ceiling or wall mount
- Built-in thermostat
- Hardwire or 30-amp plug connection
👍 Pros
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👎 Cons
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What owners say: Owners say it warms a cold garage quickly once it’s wired in and like how little room it takes; the most common complaints are fan noise and the cost of running a new circuit.
2. Fahrenheat FUH54 Electric Garage Heater: Best Compact Ceiling Mount
The Fahrenheat FUH54 is a small, tough 5,000-watt unit that Bob Vila named best for ceilings. A simple bracket holds it overhead and adjustable louvers aim the warm air down where you’re working. It’s a good match for a one- to two-car garage that’s at least partly insulated, and its analog thermostat is about as simple as controls get.
Key specs
- 5,000 watts, 240 volts
- Ceiling bracket with adjustable louvers
- Built-in analog thermostat
- Direct-wired, no cord
👍 Pros
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👎 Cons
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What owners say: Owners describe it as a no-frills heater that keeps running season after season; some wish the thermostat were more precise.
3. Dr. Infrared Heater DR-966 240V Garage Heater: Best Commercial-Grade Electric
Bob Vila called the DR-966 its best commercial-grade pick, praising the higher-quality hardware and smoother design. You can run it at 3,000 or 6,000 watts, which helps on milder days, and tilting louvers let you aim the airflow. It mounts on a wall or ceiling and has a built-in adjustable thermostat, with an optional wall thermostat if you want controls by the door.
Key specs
- 3,000 or 6,000 watts, 240 volts
- Wall or ceiling mount
- Tilting louvers
- Built-in adjustable thermostat
- Direct-wire installation
👍 Pros
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👎 Cons
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What owners say: Owners like the steady heat and sturdy feel; the usual gripe is confusion over which thermostat accessories come in the box.
4. Dyna-Glo 10,000W Electric Garage Heater: Best for Large Garages
For a three-car garage or a shop with high ceilings, Dyna-Glo’s electric garage heater steps up to 10,000 watts (a 7,500-watt version is also sold). Popular Mechanics recommended it for all-season use because it has a fan-only mode for summer air circulation, a wide 50 to 95 degree temperature range and a remote. It’s the priciest electric pick here, and the higher-watt version needs a heavier circuit.
Key specs
- 7,500 or 10,000 watts, 240 volts
- Rated for up to 1,000 sq ft
- Thermostat range 50 to 95°F
- Fan-only summer mode
- Remote control, adjustable airflow angle
👍 Pros
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👎 Cons
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What owners say: Owners with big or poorly insulated shops say it finally keeps up on the coldest days; price and the electrical work are the common drawbacks.
5. Dr. Infrared Heater DR-988 Portable Industrial Heater: Best Portable 240V
If you already have a 240-volt outlet (a welder or dryer-style receptacle) and don’t want to mount anything, the DR-988 is a heavy-duty portable that Bob Vila named its best infrared pick. It puts out up to 5,600 watts and its auto mode holds a set temperature between 37 and 113 degrees. You can move it from the garage to a shed or basement shop as needed.
Key specs
- Up to 5,600 watts, 208/240 volts
- NEMA 6-30P plug
- Portable, infrared plus forced air
- Auto thermostat mode, 37 to 113°F
👍 Pros
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👎 Cons
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What owners say: Owners like that it heats a garage fast and can be rolled wherever it’s needed; mismatched plugs and outlets are the most frequent frustration.
6. Mr. Heater Big Maxx MHU50NG Natural Gas Heater: Best Natural Gas
If your home already has natural gas, a vented unit heater like the Big Maxx is usually the cheapest way to keep a large garage warm all winter. This 50,000 BTU ceiling-mounted heater was the natural gas pick at both This Old House and Pro Tool Reviews, and it includes a propane conversion kit. It works with standard or Wi-Fi thermostats, but it needs a gas line and proper venting, so plan on a pro install.
Key specs
- 50,000 BTU, natural gas (propane conversion kit included)
- Ceiling mount, vented
- Spark ignition with self-diagnostics
- Compatible with standard and Wi-Fi thermostats
👍 Pros
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👎 Cons
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What owners say: Owners say it holds a big garage at a comfortable temperature for little monthly cost; installation complexity and occasional fan noise come up most.
7. Mr. Heater Big Buddy Pro MH18B Propane Heater: Best Portable Propane
No 240-volt outlet and no gas line? The Big Buddy Pro is the easy answer for occasional projects. It runs on two 1-pound propane cylinders (or a bulk tank with the right hose), puts out up to 18,000 BTU and is rated for spaces up to about 450 square feet. Pro Tool Reviews called it the best portable pick, noting its low-oxygen sensor and tip-over shutoff.
Key specs
- Up to 18,000 BTU, propane
- Rated for up to about 450 sq ft
- Low-oxygen sensor and tip-over switch
- No electricity needed
- Up to about 11 hours on low
👍 Pros
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👎 Cons
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What owners say: Owners like that it takes the chill off quickly for weekend projects and doubles as emergency heat; the cost of small cylinders is the most common complaint.
8. Mr. Heater MH60QFAV Forced-Air Propane Heater: Best for Fast Heat
When you need to warm a big, drafty space in a hurry, a forced-air propane heater is hard to beat. The MH60QFAV adjusts from 30,000 to 60,000 BTU, includes a 10-foot hose and regulator, and Pro Tool Reviews found it quieter than most forced-air propane units. It needs a plug for the fan and ignition, and like any unvented combustion heater it calls for fresh-air ventilation.
Key specs
- 30,000 to 60,000 BTU, propane
- Forced air, continuous electric ignition
- 10 ft hose and regulator included
- Overheat protection
👍 Pros
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👎 Cons
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What owners say: Owners say it brings a cold shop up to working temperature in minutes; propane smell on startup and the need to crack a door are the usual caveats.
9. Briza Infrared Electric Heater: Best for Garage Gyms
Infrared heaters warm you and the objects in front of them rather than the whole air volume, which makes Briza’s heater a smart choice for a garage gym or a single workbench. It runs on a regular 120-volt outlet at up to 1,500 watts, mounts on a wall or ceiling or stands on the included tripod, and has a remote with a timer. Pro Tool Reviews and Popular Mechanics both recommend it.
Key specs
- Up to 1,500 watts, standard outlet
- Infrared, multiple heat settings
- Wall, ceiling or tripod mount
- Remote with timer
- Tip-over shutoff
👍 Pros
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👎 Cons
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What owners say: Owners like the instant warmth during workouts and projects; the main complaint is that the garage air stays cold outside its beam.
How to choose the best garage heater
- Size it to your garage: As a rough guide, a single-car garage (up to about 450 sq ft) needs around 2,000 to 3,000 watts, a two-car garage about 3,600 to 7,000 watts, and three or more bays 7,000 watts and up. Cold climates, high ceilings and poor insulation push you toward the top of each range.
- Electric, propane or natural gas: 240-volt electric heaters are clean, quiet and simple once wired. Natural gas unit heaters cost the most up front but are often cheapest to run. Propane works anywhere but needs refills and ventilation.
- Forced air vs. infrared: Forced air heats the whole space but stirs up dust and makes noise. Infrared is quiet and warms people and surfaces directly, ideal for a workbench or gym corner.
- Mounting: Ceiling and wall units keep the floor clear and safer around cars and tools. Portables are better if you rent or move between spaces.
- Thermostat and controls: A thermostat holds a set temperature, so you can keep the garage just above freezing to protect pipes, paint and batteries, then bump it up when you’re working.
- Safety features: Look for overheat protection, tip-over shutoff on portables and low-oxygen sensors on propane heaters. Keep at least three feet of clearance from fuel, solvents, wood and cardboard.
Pro tip from our HVAC and construction team: Before buying a 240-volt heater, check your panel for open space and the circuit size the heater’s manual calls for. Mount ceiling units so they blow toward where you actually stand, not straight at the overhead door, and seal the door’s bottom gasket; a worn seal can waste a surprising share of the heat.
FAQ
What size heater do I need for a two-car garage?
Most two-car garages need roughly 3,600 to 7,000 watts of electric heat, or the BTU equivalent. Choose the higher end if the garage is uninsulated, has tall ceilings or you live somewhere with long stretches below freezing.
Is it safe to use a propane heater in a garage?
It can be, if the heater is rated for the space and you follow the manufacturer’s ventilation and clearance instructions. Unvented propane and kerosene heaters produce carbon monoxide, so provide fresh air, keep fuel and solvents away, and install a carbon monoxide alarm.
Do I need an electrician to install a garage heater?
Most hardwired 240-volt heaters need a dedicated circuit, and many areas require a licensed electrician or a permit for that work. Natural gas heaters need a gas line and venting, which should be done by a licensed pro. Plug-in 120-volt heaters don’t need installation.
Can I use a regular space heater in my garage?
A 1,500-watt space heater can warm a small, insulated garage or the area right around you, but it usually can’t keep up with a large or drafty garage. Always plug it directly into a wall outlet, never an extension cord.
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- Home Comfort, Backup Power & Tool Guides
Sources
Bob Vila: The best garage heaters, tested; This Old House: Best garage heaters; Pro Tool Reviews: Best garage heaters; Popular Mechanics: The best garage heaters. Owner feedback is summarized in our own words from public reviews. Photos courtesy of Unsplash.