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 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.

The TEMPWARE Electric Garage Heater is a powerful ceiling-mounted option designed to heat large indoor spaces up to 1,250 square feet. It offers strong heating capacity with up to 25,590 BTUs and adjustable power settings between 6,250 and 7,500 watts, allowing you to customize the heat output depending on your needs. The built-in thermostat lets you control temperatures from 45°F to 95°F, making it easier to maintain a comfortable workshop environment. Safety is well covered with overheating protection and ETL certification, so you can trust it to operate securely. The ECO mode and timer function help save energy by adjusting operation based on the room temperature or turning off automatically after a set time, which is great for efficiency.

This heater requires hardwired installation by a qualified electrician, as it doesn't come with a plug-in cord. This might add to upfront setup costs and reduce portability compared to plug-in models. The durable steel build and adjustable louvers for directing airflow add to its practical design for garage or workshop use. This heater is well suited for users seeking robust, reliable heating for larger indoor spaces and who are comfortable with professional installation. Those preferring a simpler plug-and-play unit or needing portability may want to consider other options.