Best Garage Heater to Keep your Garage Warm

When considering buying a new garage heater, you should seriously consider its capacities before everything else. At the end of the day, the best capable garage heater will keep your garage warm in any weather or climate, save energy bills, and save replacement costs. Adding insulation is another great way to keep your garage warm.

Most heaters now advertise the maximum area (square footage) for heat coverage, high-capacity output, and modern safety features. However, many first-time buyers are confused about the heater type to start with. You can get three different garage heaters; forced-air heater, convection heater, and radiant heater.

The type of heater appropriate for home garages is determined by output or BTU, where BTU stands for British Thermal Units. Any heater that advertises an output of over 80,000 BTU is not appropriate for your garage. So, you’d need a garage heater with 45,000 BTU for a single-car garage and 60,000 BTU for a double-car garage. Anything advertised over that threshold is only suitable for larger workspaces like warehouses and commercial garages.

Note: Beware of using a heater that uses anything above 80,000 inside an enclosed space because of the dangers of carbon monoxide poisoning and fire.

While it can be confusing to find the right garage heater, we have made it simpler by narrowing the list down to ten.

10 Best Residential Garage Heaters

Here is the list of ten highly-rated residential garage heaters on Amazon and other websites.

1. Fahrenheat 5,000-Watt Electric Heater

Fahrenheat FUH Electric Heater for Garage, Factory, Basement, Warehouse, and Outdoor Use, Beige

Fahrenheat FUH is an electric heater made for garages, warehouses, and outdoor use. With an output of 5,000 watts or 17,000 BTU, Fahrenheat FUH can quickly warm up single-car garages and small warehouses in winter. The company puts it as midrange electric garage heaters for occasional heating that comes under $320.

More about Fahrenheat Electric Heater

  • The portable heater size of 13-in high and 14-in wide easily fits inside a cramped garage.
  • You can easily mount it on walls or ceilings using a mounting bracket for maximum coverage of up to 500 sq. ft. Moreover, it comes with a built-in thermostat and a thermal safety cutoff for preventing overheating.
  • The powerful 5,000-watt heat output quickly warms up cold enclosed areas. You can also use it for outdoor areas like patios and workspaces. You can use the remote control to control the heater from a distance effortlessly.
  • The heater automatically turns off when it is at maximum capacity but continues to operate until the heating element is cooled.


  • Affordable and reasonable electrical garage heater.
  • The adjustable thermostat goes from 45 degrees to 135 degrees Fahrenheit.
  • The electrical heating unit saves natural gas and propane heater use.


  • Requires hardwiring but a simple plugging-in.
  • It doesn’t come with a power cord; hence it must be direct-wired to a dedicated 240-volt outlet with a 30-amp breaker.
  • Installation requires assistance from a professional electrician.

2. Mr. Heater F260550 Big Maxx Natural Gas Unit Heater

Mr. Heater F260550 Big Maxx MHU50NG Natural Gas Unit Heater

The Mr. Heater Big Maxx Natural Gas GThe Mr. Heater Big Maxx is unlike your traditional garage heater. The natural gas-powered forced-air heater boasts 50,000 BTU and can heat up to 1250 square feet of space in no time. If you’re wondering about your garage space, it can efficiently heat a two- or three-car garage space.

The low-profile design requires only an inch of ceiling clearance; hence you can easily install it in low-ceiling areas. Moreover, you can turn the natural gas unit into a Propane-powered unit via the included LP conversion.

More about this product

  • Big Maxx boasts of a standard 115-volt AC outlet to power the exhaust fans and the spark ignition.
  • Easily convert the unit from natural gas to propane via the included LP conversion kit.
  • Mount it easily on the ceiling using two angle brackets. It only requires an inch of clearance from the ceiling. (At least 8 feet from the bottom of the heater to the floor).
  • Spark ignition features a self-diagnostic control module.
  • It features easy outside access to the thermostat and A/C terminals and gas connection.


  • 50,000 BTU offers a maximum heating capacity of up to 1250 sq. ft.
  • Easily convertible from natural gas garage heater to propane unit
  • Allows 1-in mounting clearance to save space
  • It features a factory-standard self-diagnostic control module.


  • The thermostat is not included in the unit.
  • Vent-Free is omitted.
  • Oxygen Depletion Sensor not available.
  • It makes a lot of noise after continuous use.

3. Mr. Heater Buddy Indoor-Safe Portable Radiant Heater

Mr. Heater F232017 MH9BXRV Buddy Grey Indoor-Safe Portable RV Radiant Heater (4,000-9,000-BTU)

Mr. Heater F232017 Buddy Grey is a portable RV radiant heater suitable for garages. It boasts 4,000 BUT to 9,000 BTU that can efficiently heat a single-car garage or 225 square feet.

It’s efficient, affordable, and convenient. It also features an Auto shut-off option when tripped over; the pilot light goes off or detects low oxygen levels.

It runs on small propane bottles, hence saving expensive energy bills. The heater also boasts a push-button igniter, two heat settings, and a porcelain-coated radiant heating surface for even heat distribution.

More about this product

  • Mr. Heater features a propane gas garage heater (1-lb cylinder).
  • It features a fold-down handle and swivel-out regulator to adapt usage from a disposable cylinder to a remote gas supply (additional hose and filter required).
  • It features an integrated Piez sparking mechanism and Oxygen Depletion Sensor (ODS)


  • Saves electricity bills.
  • Perfect for small enclosed space.
  • It easily converts from a disposable cylinder to a remote gas supply.
  • Auto shut-off feature available in case of emergency.


  • Only appropriate for 200 sq. ft or single-car garage.
  • It doesn’t feature remote control.
  • 1-lb propane cylinder doesn’t last long, with the only solution to connect it to a remote gas supply.

4. Optimus Garage Utility Heater

Comfort Zone CZQTV5M Ceiling Mounted Radiant Quartz Heater with Halogen Light Included - 2pk

The garage Utility Hearter from Optimus is a Radiant heater. Boasting a power of 1500 Watt or 4094 BTU, it offers dedicated heat in an enclosed space. Thanks to its 2 Quartz bulbs, it directs output precisely to your desired areas, but you need not keep it on the floor. Hence, the wall-mountable design keeps it’s at a safe space away from you.

Each unit is fitted with a halogen bulb to provide ample light in dark spaces, and a metal grill prevents the Quarts bulb from coming into contact with combustible items. It also features an advanced safety feature to prevent overheating and fire.

More about this product

  • The heater can easily be angled up to 90 degrees, which helps to ensure that the output is directed to just the right areas.
  • A built-in bright halogen bulb (Type G9 25 Watt) allows you to view your projects more clearly.
  • You can easily mount it on the ceiling.
  • It features an advanced safety feature. A built-in sensor shuts the unit off immediately when it reaches an unsafe temperature.
  • The 9-lb design keeps it light and ergonomic.
  • It provides ample heat to small space (400 sq. ft.)


  • The 2 Quartz bulbs provide reliable heating.
  • Light-weight and wall-mountable design.
  • Auto shut-off feature to prevent overheating and fire.
  • A built-in halogen bulb provides ample lighting.


  • It’s not appropriate for large spaces.
  • A 1500 watt bulb will rake up the electricity bill.
  • Dr. Infrared Heater Garage Shop Heater

5. Dr. Infrared Heater DR-988A

Dr. Infrared DR-988
Dr. Infrared DR-988 208/240V 4800/5600W Industrial Heater

Dr. Infrared Heater DR-988A provides an efficient infrared garage heater that allows raising the temperature to 60 or 70 degrees within a few hours. You can easily upgrade it from 208V to 240V unit and boasts of 4,800 Watt to 5,600 Watt. At full power, you can have almost 18,500 BTU heat that is enough to heat a single-car garage.

It features an automatic fan switch, thermostat control switch, and 6-ft heavy-duty 3-prong power cord.

More about this product

  • It features both radiant/infrared and forced-air designs.
  • It comes with a built-in thermostat that you can adjust from High to Low.
  • Set your preferred comfortable temperature from 4,800 Watt to 5,600 Watt.
  • It features an electronic thermostat that you can adjust to 45-95 degrees.
  • It features overheat protection and a finger-proof intake. (High-temp heating limit)
  • It comes with a built-in carry handle with maximum portability.


  • Adjust a portable electric garage heater from 208V to 240V.
  • Lightweight and portable design.
  • Fan-switch is available.
  • It’s very affordable.


  • The space heater coil gets extremely hot pretty quickly.
  • The fan makes a lot of noise.
  • Some customers complained about fans failing to work after a while.

6. Mr. Heater Portable Propane Radiant Heater

Portable Buddy Heater
Portable Buddy Heater/

Mr. Heater F232000 MH9BX Buddy is a portable garage heater that you can easily carry to any place. It boasts 4,000-9,000 BTU power that can efficiently heat spaces to 225 Sq. Ft for its small size. It features a radiant heating garages method powered by propane (1-lb cylinder) that helps to save on electricity bills. The steel, plastic design keeps it lightweight. It also features auto shut-off when tipped over or detects low oxygen levels.

More about this product

  • Mr. Heater features a propane-run garage radiant heater (1-lb cylinder).
  • It features a fold-down handle and swivel-out regulator to adapt usage from a disposable cylinder to a remote gas supply (additional hose and filter required).
  • It features an auto shut-off safety feature when tipped over or detected oxygen depletion.
  • Fold-down handle; swivel-out regulator; connects to propane tank (not included); Run Time (Hrs at Max BTU): 3 Hours.
  • It comes in a trendy red and black color.


  • It’s very affordable.
  • It features a 9000 BTU power for a lightweight, portable unit.
  • It comes in two different color choices.


  • It doesn’t feature remote control.
  • 1-lb propane cylinder doesn’t last long, with the only solution to connect it to a remote gas supply.

7. Dyna-Glo Wall Heat Natural Gas Infrared Natural Gas Wall Heater

Dyna-Glo IRSS12NGT-2N Natural Gas Infrared Vent Free Thermostatic Heater, 12,000 BTU

Dyna-Glo is a radiant/infrared and forced-air heater that is appropriate for single-car garage space. It runs on natural gas hence saving on electricity bills. It boasts 6000 BTU to 18000 BTU power that heats space to 1000 sq. ft (Garage insulation required). You can use a variable control knob to customize heat settings from low (6000 BTU) to High (18000 BTU). It’s an ideal choice for safe, indoor use. Unlike other heaters, it’s a wall-mounted heater that easily fits on your garage wall.

More about this product

  • It’s natural gas ready (Fuel source conversion not permitted)
  • It boasts of 6000 BTU to 18000 BTU that heats up to 1000 sq. ft.
  • No electricity is required. Back-up heat option available in case of emergency.
  • It offers manual control systems that allow you to choose your ideal temperature.
  • It features infrared technology.
  • You can choose from wall-mount design to floor installation.


  • It’s best for places that lack electrical wiring.
  • It runs on natural gas and liquid propane.


  • It’s slightly expensive.
  • Fans and optional base legs are sold separately.
  • The product doesn’t have a thermostat.

8. Modine HD45AS0111 Natural Gas Hot Dawg Garage Heater

Modine HD45AS0111Natural Gas Hot Dawg Garage Heater 45,000 BTU with 80-Percent Efficiency

Modine garage heater is a heavy-duty natural gas heater that is appropriate for large spaces such as multi-car garages and warehouses. The “Hot Dawg” heater is efficient and versatile. It quickly heats any enclosed space thanks to its adjustable 30,000 BTU to 125,000 BTU power. For proper ventilation, it features an exhaust pipe that expels harmful gases.

More about this product

  • It boasts 30,000 BTU to 125,000 BTU powers that are perfect for winters.
  • It offers a quiet operation.
  • It’s certified for residential, commercial, and industrial use.
  • It’s appropriate for large spaces.
  • It’s 8% energy efficient.
  • The standard power exhaust simplifies side-wall or roof venting with a small-diameter vent pipe.


  • It offers a limited 2-year warranty.
  • You can easily convert it from gas to propane.


  • It’s pretty expensive.
  • It requires ventilation.

9. Mr. Heater F260560 Big Maxx MHU80NG Natural Gas Unit Heater

Mr. Heater F260560 Big Maxx MHU80NG Natural Gas Unit Heater

Mr. Heater is one of the leading names in heating solutions. MHU80, also known as “Big Max,” is the best choice for a natural gas heater. It generates up to 80,000 BTU of heat that is appropriate for large garage spaces and outdoor use. It can heat up to 2,000 square feet of space.

The forced-air heater design features a fan that pulls in cool air and then heats it before expelling it. You can choose from running it on natural gas or liquid propane tank.

More about this product

  • It’s a natural gas-powered unit.
  • It comes with 2-angle brackets and also a liquid propane conversion kit.
  • The high-performance offers 80,000 BTU that quickly heats up to 2000 sq. ft of space.
  • Powered exhaust allows for vertical or horizontal venting.
  • Spark ignition features a self-diagnostic control module.
  • These heaters only require 115v AC power and can be vented vertically or horizontally.


  • It offers a limited 3-year warranty on parts and burners.
  • It’s appropriate for large workspace and outdoor use.
  • Natural Gas to Liquid Propane conversion kit included.


  • It’s not appropriate for single-car or double-car garage
  • It weighs more than 85 pounds.
  • Thermostat, hose, and regular not included.

10. Sengoku Kerosene Heater, White

Sengoku Kerosene Heater, White

Sengoku heater is unlike your garage heater. It’s a convection kerosene heater that provides excellent performance of 23,500 BTU heating. It can quickly heat up to 900 square feet. Also, it expels toxic fumes but required a proper ventilation solution in your garage. It’s freestanding, so there’s no installation required and battery operated. It features an easy and safe use design with an automatic shutoff switch when the unit is tripped over. Much to our surprise, it comes under $170.

More about this product

  • It doesn’t require a match or electricity. It’s completely battery-powered.
  • It features a Push-button start and EZ flame adjuster.
  • The 23,500 BTU provides ample heat up to 900 sq. ft.
  •  It boasts a fuel capacity of 1.9 gallons that provides 12-hr of continuous heat.
  • It features an automatic shut-off when tripped over.
  • Heaters are self-contained and operate without the need for electrical power or Chimney.
  • A manual siphon pump is included with every heater for quick, safe, and convenient transfer of Kerosene to the heater without any mess.


  • It offers 1.9 gallons capacity with 12-hr of continuous performance.
  • The built-in battery prevents the use of matches.
  • It offers a 23,500 BTU heating capacity.


  • It requires ventilation.

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