It's 28 degrees, you've got a project on the bench, and your fingers have stopped working. A two-car garage is a lot of cold air to fight, and a little 1,500-watt plug-in heater won't make a dent. You need a real garage heater for a 2 car garage, sized for roughly 400 to 600 square feet. Here are the 4 best options in 2026, ranked by how many people buy and rate them. We didn't test these ourselves. The specs come from the listings and the brands, and the downsides come from what we'd check before buying.
What to Look For in a Garage Heater for a 2 Car Garage
Power source first. Propane heaters need no wiring. 240V electric heaters need a dedicated circuit, and most are hardwired. Check your panel before you shop, not after.
Size it to the space. A common rule of thumb is about 45,000 BTU for a well-insulated two-car garage with a full-size door. Electric units in the 5,000 to 7,500 watt range (17,000 to 25,600 BTU) will warm a garage steadily, but they take longer and work best with some insulation.
Ventilation. Propane burns indoor air. If you go that route, crack the garage door or a window and use a carbon monoxide alarm. No exceptions.
Thermostat and controls. A thermostat keeps the heat steady and the power bill sane. A remote is nice if the heater is mounted overhead.
Install and mounting. Hardwired ceiling or wall heaters free up floor space, but the wiring is not a weekend guess. Have a licensed electrician confirm wire gauge and breaker size.
The 4 Best Garage Heaters for a 2 Car Garage in 2026
1. Mr. Heater Big Buddy PRO Series 18,000 BTU
Best for: a garage with no 240V circuit, or anyone who wants a heater they can move around.
The Big Buddy is a portable propane heater with 3 settings: 4,000, 9,000 and 18,000 BTU. The PRO Series adds electronic ignition and a built-in fan. No wiring, no install, you just attach a propane source and light it.
What makes it stand out: The listing says it heats up to 450 square feet, and it combines radiant heat with fan-driven airflow. It's also the most reviewed heater here by a wide margin. Hook it to a larger tank with the optional hose and the listing says you get up to 216 hours on the low setting with two 20 lb tanks.
Good to know: 18,000 BTU is on the low side for a big two-car garage in a hard freeze. It's best for a 1-car space or a milder climate. And you need fresh air in the room while it runs.
2. Dr. Infrared Heater DR-975 7500W 240V
Best for: a permanent, hardwired heater with a remote thermostat.
The DR-975 is a wall or ceiling mounted 240V heater that runs at 4,700 or 7,500 watts. It has a remote-controlled thermostat, 5 adjustable louvers to aim the air, a timer, and UL/CUL listing.
What makes it stand out: It's a lot of heat for the money and it has thousands of reviews, which is rare for a hardwired unit. The listing rates it for about 800 square feet, so a two-car garage is well inside its range.
Good to know: It's hardwired, and the power cord is not included. The listing calls for 8 AWG copper wire. The thermostat tops out at 85°F, and the warranty is 1 year. Budget for an electrician if you aren't one. There's also a separate listing with a cord bundled, so check which one you're ordering.
3. Comfort Zone CZ230ER 7,500W Ceiling Mount
Best for: a ceiling-mounted heater with a digital thermostat and a 12-hour timer.
Another 7,500 watt, 240V hardwired heater, this one from Comfort Zone. It has a heavy-gauge steel body, adjustable louvers and a mounting bracket that lets you tilt it.
What makes it stand out: It comes with a remote, a digital thermostat, a 12-hour timer and overheat protection. The listing claims coverage up to 1,250 square feet, which is optimistic, but it tells you there's plenty of power for a two-car space.
Good to know: Same story as the DR-975: it's a hardwired install and the warranty is 1 year. Pick this one over the Dr. Infrared if you want the digital controls and timer. Pick the Dr. Infrared if you want a wider reviewer base.
4. Dyna-Glo EG5000DGP 5,000W 240V
Best for: a smaller or well-insulated garage, or a lower-draw electric option.
The Dyna-Glo is the smaller electric option at 5,000 watts, with 3 heat settings at 11,285, 14,105 and 17,060 BTU. It ships fully assembled and the angle can be adjusted horizontally and vertically.
What makes it stand out: It has the best star rating on this list (4.6) and a fully enclosed motor. It draws less power than the 7,500W units, so it's easier on your electrical setup.
Good to know: The listing rates it for 500 square feet, so it's cutting it close for a full two-car garage. It's best if the garage is insulated. The listing also doesn't mention a remote.
How to Choose Between Propane and Electric
- Check your panel. If you can't get a 240V circuit to the garage, propane is your answer.
- Look at your insulation and door. A bare, uninsulated garage needs more heat than an insulated one.
- Do the math on size. For 400 to 600 square feet, aim for 7,500 watts or more in electric, or lean on propane only for light use.
- Plan the install. A hardwired heater needs the right breaker and wire. Have an electrician confirm it.
- Add a thermostat or timer so it isn't running all night.
If you're still comparing, we also have a roundup of space heaters for the garage. And if you spend a lot of time out there working, our air compressors for the home garage are worth a look.
Frequently Asked Questions
What size heater do I need for a 2 car garage?
Is a 240V garage heater worth the install?
Can I use a propane heater in a closed garage?
Where should I mount a garage heater?
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Final Thoughts
The Mr. Heater Big Buddy PRO is #1 because it works without wiring and so many people buy it. Just know it's the weakest on heat for a full two-car garage.
If you can get a 240V circuit, the Dr. Infrared DR-975 or the Comfort Zone CZ230ER will do the job better. Take the Dyna-Glo if your garage is small or insulated and you want the lower-draw unit.
Disclosure: This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases. Here's how we pick products.
