The Best Gas Garage Heaters to Keep You Warm in Chilly Months

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Don’t let cold temperatures keep you from your hobbies or projects. These top gas garage heaters are sure to keep your workspace warm.

Whether you’re passing the colder months with hobbies in your workshop or your must-do repairs simply can’t wait for warmer days, time in a garage space is better when you’re comfortable. When keeping the garage door shut isn’t enough to keep the frigid air out, take the edge off the chill with the best gas garage heater.

These convenient clean-burning gas heaters use natural gas or propane to pump heat into a 1- or 2-car garage space, keeping you, your vehicles, and your tools warm when there’s a temperature drop. This guide will help you choose the best gas garage heater for your shop or garage.

  1. BEST OVERALL: Mr. Heater 50,000 BTU Big Maxx Natural Gas Heater
  2. BEST BANG FOR THE BUCK: Mr. Heater Portable Buddy Radiant Propane Heater
  3. BEST FOR LARGE SPACES: Mr. Heater 80,000 BTU Big Maxx Natural Gas Heater
  4. BEST FOR SMALL SPACES: Dyna-Glo 10,000 BTU Indoor Natural Gas Heater
  5. BEST PORTABLE: Mr. Heater 18,000 BTU Big Buddy Portable Heater
  6. BEST NATURAL GAS: Dyna-Glo 30,000 BTU Natural Gas Vent-Free Wall Heater
  7. ALSO CONSIDER: Mr. Heater 25,000 BTU Radiant Workshop Heater
The Best Gas Garage Heater Options
Photo: amazon.com

How We Chose the Best Gas Garage Heaters

These recommendations reflect the importance of having steady, reliable heat in cold temperatures from a trusted power source. It’s important to note that some heating methods are not appropriate for small, poorly ventilated spaces, which is why we have both natural gas and propane garage heaters available for specific needs.

Furthermore, we narrowed our search to include the three heating methods: forced air, convection, and radiant (or infrared heater). Each method has a different kind of heat output in the room that some users find more effective than others.

Another primary factor we considered for these recommendations was the total area the unit could capably heat. There are products that work for both large 2-car garages and small work sheds or even campers. Overall, our favorites have cautionary measures in place to ensure safe operation whether they are freestanding gas heaters or mounted on a wall.

Our Top Picks

The Best Gas Garage Heater
Photo: amazon.com

Shopping for the best gas garage heater just got a little easier. The following is a list of some of the best shop space heaters on the market. Be sure to keep the top shopping considerations in mind while comparing these products. From choosing the best fuel source to the proper size, there’s an option for any garage space listed below.

Best Overall

Mr. Heater 50,000 BTU Big Maxx Natural Gas Heater

 The Best Gas Garage Option: Mr. Heater 50,000 BTU Big Maxx Natural Gas Heater

Photo: amazon.com

Product Specs

  • Type: Forced air (vented)
  • Fuel source: Natural gas
  • BTUs/heating capacity: 50,000 British thermal units (BTUs)

Pros

  • 50,000 BTU natural gas output for heating 1,667 square feet
  • Thermostat and controls are easily accessible for quick adjustments when needed
  • Has a built-in power-exhaust system that allows for horizontal or vertical venting
  • Industrial-style utility heater that can use either gas or propane

Cons

  • Required minimum 8 feet of clearance from base to floor
  • Thermostat and ventilation kit are separate purchases; may be inconvenient for some users’ needs

Not all ceiling-mounted units are large and in charge. For medium-size spaces, Mr. Heater’s 50,000 BTU Big Maxx natural gas heater can answer the call. This forced-air heater quickly warms garages and small barns up to 1,667 square feet. The included ceiling brackets make hanging it from the ceiling an easy process.

The accompanying kit also includes the equipment to swap this heater from natural gas to propane, allowing users to decide which fuel source they’d like to use. This unit requires a ventilation kit and a thermostat, both of which are separate purchases.

Get the Mr. Heater 50,000 BTU gas garage heater at Amazon, Tractor Supply Co., or Menards.

Best Bang for the Buck

Mr. Heater Portable Buddy Radiant Propane Heater

 The Best Gas Garage Heater Options: Mr. Heater F232000 MH9BX Buddy 4,000-9,000-BTU

Photo: amazon.com

Product Specs

  • Type: Radiant (infrared/ventless)
  • Fuel source: Propane
  • BTUs/heating capacity: 4,000 to 9,000 BTUs

Pros

  • Highly portable, affordable, and convenient gas-heater option for simple use
  • Runs on 1-pound cylinder propane tank or connects to standard propane tank via an adaptor
  • Ventless propane heater allows for easy and convenient indoor and outdoor use
  • Heats up to 225 square feet; great for a tent, camper, or garage space

Cons

  • Only runs up to 5.4 hours at maximum burn; not suitable for long-term use

Heating a small space doesn’t have to require a big budget. The Portable Buddy from Mr. Heater (model number MH9BX) has the power to heat a small space, the safety features to run safely, and an affordable price tag. This Mr. Heater propane heater accepts small 1-pound bottles of propane, though an adapter hose will hook it to a standard-size propane tank.

Producing 4,000 to 9,000 BTUs, this radiant propane garage heater will warm objects in spaces up to 225 square feet, making it an attractive option for small shops and 1-car garages. Its ventless design means it can be used indoors or out, and the near-100 percent efficiency means it won’t waste precious fuel. This propane garage heater will also shut down if it tips over, the pilot light goes out, or if it detects low-oxygen conditions.

What our tester says: Glenda Taylor, Bob Vila writer and product tester, notes in her

Buddy heater review

that “for anyone seeking a portable, efficient, and versatile heating solution for a diverse range of indoor and outdoor scenarios, the Mr. Heater Buddy can be a valuable addition. The compact design makes it an excellent recreational or camping heater. This heater is also a dependable emergency heating option for those in regions prone to power outages or extreme weather conditions, providing comfort and safety during unforeseen crises.”

Get the Mr. Heater Portable Buddy gas garage heater at Amazon, Walmart, or Mr.Heater.

Best for Large Spaces

Mr. Heater 80,000 BTU Big Maxx Natural Gas Heater

 The Best Gas Garage Heater Option: Mr. Heater F260560 Big Maxx Natural Gas Unit Heater

Photo: amazon.com

Product Specs

  • Type: Forced air (ventless)
  • Fuel source: Natural gas
  • BTUs/heating capacity: 80,000 BTUs

Pros

  • 80,000 BTU natural gas supply output; heats up to 2,667 square feet
  • Wall or ceiling mountable; brackets included for quick and easy installation
  • Powered exhaust system built-in for both horizontal or vertical venting
  • Forced-air system provides quick heating for medium and large spaces
  • Comes with a propane conversion kit in case of power failure

Cons

  • Required minimum 8 feet of clearance from base to floor
  • Separate purchase required to do both thermostatic control and direct venting

When a small, temporary fix for a large garage or shop won’t cut it, check out the Mr. Heater Big Maxx natural gas heater (model number MHU80). This 80,000 BTU natural gas heater will heat spaces up to 2,667 square feet. The rear-mounted fan draws cold air into the unit, pushes it across a heat exchanger, and then forces it into the space for quick heating.

This model requires 8 feet of clearance under it, so it comes with the necessary brackets for mounting it to the ceiling. It also includes a propane conversion kit, allowing users to swap it over to propane fuel if that’s their preference. While this unit is thermostatically controlled and direct vented, the items necessary to do both are separate purchases.

Get the Mr. Heater 80,000 BTU gas garage heater at Amazon, or Lowe’s.

Best For Small Spaces

Dyna-Glo 10,000 BTU Indoor Natural Gas Heater

 The Best Gas Garage Heater Option: Dyna-Glo 10,000 BTU Indoor Natural Gas Heater

Photo: Lowes.com

Product Specs

  • Type: Convection heater
  • Fuel source: Natural gas or propane
  • BTUs/heating capacity: 10,000 BTU

Pros

  • Uses dual-fuel technology; it will work with both natural gas or propane
  • Wall-mounted design makes it ideal for garages with limited floor space
  • A more affordable option for warming up smaller single-car garages

Cons

  • Not enough heat output to warm larger 2-car garages

There’s no need to spend a lot of money on an expensive gas heater for a smaller garage. This gas model from Dyna-Glo will warm smaller spaces at a reasonable price. With its 10,000 BTU heat output, it’s capable of warming up to 300 square feet. This gas heater is also dual fuel: It will work on either propane or natural gas. It’s equipped with a thermostat that automatically adjusts the flame size based on temperature settings.

And since it mounts to the wall, it won’t take up valuable floor space. Its visible blue flame uses convection heat by warming the surrounding air. A thermostat control knob manages the heat output. This model is versatile, too. It’s compatible with an optional blower that can help distribute the air throughout a garage, and it comes with a set of base legs, giving users the option to use it as a stand-alone heater.

Get the Dyna-Glo 10,000 BTU gas garage heater at Lowe’s.

Best Portable

Mr. Heater 18,000 BTU Big Buddy Portable Heater

 The Best Gas Garage Heater Option: Mr. Heater 18,000 BTU Big Buddy Portable Propane Heater

Photo: amazon.com

Product Specs

  • Type: Radiant heater
  • Fuel source: Propane gas canisters
  • BTUs/heating capacity: 18,000 BTU

Pros

  • Built to take abuse with heavy-duty plastic housing and metal grate cover
  • Holds 2 canisters, giving it a long runtime of up to 11 hours
  • Light weight and large carrying handle make it easy to transport

Cons

  • Doesn’t include a blower fan, which limits its ability to circulate warm air

With its rugged construction, portable design, and manageable weight, Mr. Heater’s Big Buddy is well suited for heating a garage or an indoor worksite that isn’t climate-controlled. With its 18,000 BTU output, this radiant gas heater can warm spaces up to 450 square feet.

It weighs 17 pounds and has a large handle mounted to the top, making it easy to tote from truck to worksite. It’s also ruggedly made, with a metal grate that protects the heating element and a tough plastic housing. Its dual fuel tanks can last up to 11 hours, making it suitable for long work days in unheated spaces. It also has three heat settings and safety features, including a low oxygen auto shutoff and accidental tip-over shutoff.

Get the Mr. Heater 18,000 BTU gas garage heater at Amazon, Lowe’s, or Walmart.

Best Natural Gas

Dyna-Glo 30,000 BTU Natural Gas Vent-Free Wall Heater

 The Best Gas Garage Heater Option: Dyna-Glo 30,000 BTU Natural Gas Vent Free Wall Heater

Photo: amazon.com

Product Specs

  • Type: Convection/blue flame (ventless)
  • Fuel source: Natural gas
  • BTUs/heating capacity: 30,000 BTUs

Pros

  • Can heat very large areas up to 1,000 square feet
  • Extremely efficient 99 percent burn; suitable for the eco-conscious consumer
  • Features an easy-start battery-powered ignition and a low-oxygen cutoff switch

Cons

  • No thermostat included; may be difficult for a given user to see the temperature

When it comes to getting the most value from a gas garage heater, Dyna-Glo’s natural gas vent-free wall heater is worth consideration. This 30,000 BTU blue-flame heater will create warm, even convection heat in spaces up to 1,000 square feet. And, since it burns at 99 percent efficiency, this natural gas heater offers an affordable way to stay comfortable.

The vent-free Dyna-Glo heater comes with the hardware required to mount it to the wall. It also has three adjustable heat settings on the top of the unit, allowing users to dial in their ideal temperature. There’s a battery-powered electronic ignition for easy starts and a low-oxygen cutoff switch that shuts down the unit when it detects dangerously low levels of oxygen.

Get the Dyna-Glo 30,000 BTU gas garage heater at Amazon or Tractor Supply Co.

Also Consider

Mr. Heater 25,000 BTU Radiant Workshop Heater

 The Best Gas Garage Heater Option: Mr. Heater 25,000 BTU Radiant Workshop Heater

Photo: amazon.com

Product Specs

  • Type: Radiant
  • Fuel source: Natural gas
  • BTUs/heating capacity: 25,000 BTUs

Pros

  • Wall-mount design keeps it out of the way of foot traffic and objects in the garage
  • Plenty of heating power to warm up even larger 2-car garages
  • Low thermostat setting keeps garage just above freezing at all times

Cons

  • High position makes it more difficult to heat space than floor gas heaters

This gas garage heater stays above the fray by mounting on the wall near the ceiling and casting warm, radiant heat below. With this wall-mount design, it warms the space without taking up valuable garage floor space or potentially coming into contact with people and objects. Its 25,000 BTU output is enough to warm up even larger garages with ease. It also has a low thermostat setting of 35 degrees Fahrenheit, making it a great economical way to keep the garage just above freezing throughout the winter.

It comes equipped with an automatic safety shutoff and a metal grid that protects the heating element.

Get the Mr. Heater 25,000 BTU gas garage heater at Amazon, The Home Depot, or Northern Tool + Equipment.

Jump to Our Top Picks

What to Consider When Choosing a Gas Garage Heater 

“Several factors are crucial when selecting the best garage heater,” says Jeff Palla, president of Mr. Handyman, a national home maintenance and repair company. “Consider the size of the space, insulation, and ventilation,” he says. “Look for heaters designed for indoor use to ensure safety. Also, factor in the ease of installation and maintenance, as well as the heater’s efficiency and heating capacity.”

Type

The three main types of gas garage heaters are forced air, convection, and radiant. Here are some more details about the different heating methods used in garage heaters:

  • Forced-air gas heaters draw in cold air from the space, heat it, and pump it back in.
  • Convection heaters (also known as blue flame) warm the air around them, starting a cycle of warm air rising and cooler air working its way to the heater.
  • Radiant heaters project heat onto objects within the space, making them a great option for heating a workbench. Additionally, these heaters come in two variations: direct vent and ventless.
  • Direct-vent heaters exhaust their gasses outside, while the exhaust from a ventless heater enters the heated space. Direct-vent heaters are more expensive and more challenging to install, but ventless heaters can irritate those particularly sensitive to odors and fumes.

There are other nonelectric garage heaters as well, such as kerosene-burning options. While all types of heater will help warm a garage, Palla suggests going with radiant heating. “For an unfinished garage, radiant heaters might be more effective as they heat objects directly and work well in drafty or less insulated spaces,” he says “They provide warmth without relying on air circulation.”

Fuel Source

When it comes to choosing a product based on fuel source, note that there are natural gas, electric, and propane gas garage heaters. All are efficient, but there are scenarios where one might be better than another.

“Propane offers portability and can be stored easily, while natural gas tends to be cheaper and is piped directly,” Palla says. “Consider availability, cost, and convenience when choosing between the two.”

For garages that aren’t on natural gas grids, propane heaters might be a better choice. Propane also burns cleanly, but it’s more readily available by the bottle than natural gas. Many gas stations, grocery stores, and home improvement stores operate bottle-swap stations where an

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