10 Best Garage Heaters 2025 in the United States

The TEMPWARE Electric Garage Heater is an effective option for those looking to heat a large garage or workshop. With a high heating capacity of 34,120 BTUs, it can comfortably heat an area up to 1,500 square feet. It operates on a 240-volt power source and requires hardwired installation, meaning you will need an electrician for safe setup. This unit is designed as a fan-forced heater, which helps distribute warm air evenly throughout the space.

It does not come with a power cord, which might be a minor inconvenience for some users. However, its sturdy, heavy-duty steel construction ensures durability and longevity. Additionally, it includes safety features such as overheat protection and an ETL certification, which is reassuring for safe usage. The built-in thermostat and ECO mode allow for customizable temperature control between 45°F to 95°F, making it energy efficient.

The adjustable louvers and mounting angle enable you to direct warmth where needed. It also includes a 12-hour timer and a remote control, adding convenience. While the hardwired installation can be seen as a drawback, the heater's robust features and safety certifications make it a reliable choice for maintaining a comfortable working environment in your garage or workshop.

The Dr Infrared Heater DR-238 is a versatile heater ideal for both indoor and outdoor spaces, making it a great choice for garages, patios, and even restaurants. With a heating capacity of up to 1500W and three power settings, it provides clean, instant, and odorless infrared heat, which can be particularly appealing for those who dislike the smell of traditional heating methods. Its IP55 rating means it’s weatherproof, allowing for outdoor use without worry. It also comes with a remote control for convenient operation and includes wall and ceiling mounting brackets for easy installation, enhancing its portability.

A notable strength of the DR-238 is its efficient design, featuring a high-level mirror aluminum reflector that maximizes heat distribution, ensuring that even larger areas can benefit from warmth. Additionally, the heater is lightweight at just 8 pounds, making it easy to mount or move as needed.

There are a few drawbacks to consider. The heater requires assembly and might not be suitable for very large garage spaces if you need an intense heat output. While the ability to mount it on walls or ceilings is a plus, some users may find the 120V power source limits its effectiveness in larger, open areas without adequate electrical supply. Furthermore, the warranty is limited to one year, which may not provide peace of mind for long-term use.

The Mr. Heater F260560 Big Maxx MHU80NG is a solid choice for anyone looking to heat a garage or large indoor space, capable of delivering a strong heating capacity of 80,000 BTUs and covering an area of up to 2,667 square feet. Its natural gas power source is convenient for those with existing gas lines, and it comes with a conversion kit for liquid propane, enhancing its flexibility.

One of the standout features is its powered exhaust system, which allows for both vertical and horizontal venting. This versatility in installation means it can be adapted to various garage layouts. The heater also includes a spark ignition and a self-diagnostic control module, which contribute to its reliability and ease of use. Safety is prioritized with features like a high-temperature safety shut-off, making it suitable for long-term operation.

The heater does require some assembly and proper clearance from the floor, which might not be ideal for every garage setup. Additionally, the thermostat is not included, so you would need to purchase that separately to control the temperature effectively. Weighing in at 88 pounds, it’s not the most portable option, and if you’re looking for something easy to move around, this might not be the best fit. If you want a powerful heater and have access to natural gas, the Mr. Heater Big Maxx offers reliable performance, but be prepared for installation considerations and potential additional costs for a thermostat.