10 Best electric heater for garage 2025 in the United States

The Mr Heater 4000 to 18000 BTU Portable LP Gas Heater is a versatile choice for those needing a reliable heating solution for their garage or other spaces. It offers three heat settings (4,000, 9,000, and 18,000 BTU), making it adaptable to different heating needs and capable of covering up to 450 square feet. The propane fuel source means you can use it both indoors and outdoors, giving you flexibility in terms of location.

However, you will need to purchase hoses, filters, and propane tanks separately, which is an added expense and consideration. The heater is designed with safety in mind, featuring an automatic shutoff if it tips over or in low-oxygen conditions, which is a great peace of mind for garage use. It's also lightweight at 15 pounds and has a compact form, making it easy to move around.

One downside is the lack of a built-in thermostat control, which means you might need to manually adjust settings to maintain a consistent temperature. While propane heaters are generally efficient, the exact energy efficiency will depend on usage patterns and propane costs. Noise levels are not specified, but propane heaters typically operate quietly. This heater is especially suitable for those needing portability and dual indoor/outdoor usage, but be prepared for the additional setup costs and manual temperature adjustments.

The TEMPWARE Electric Garage Heater is a robust option for heating large garage spaces. With a powerful wattage range of 6,250 to 7,500 watts and adjustable louvers, it can efficiently heat areas up to 1,250 square feet. It offers two heat settings, making it versatile for different heating needs. The digital fan-forced heating method ensures even heat distribution, and the built-in thermostat allows for precise temperature control between 45°F to 95°F.

Additionally, the ECO mode automatically adjusts the temperature to save energy, and the 12-hour timer feature offers convenience and energy efficiency. Safety is well-considered with overheat protection and a sturdy steel construction, adding durability and longevity. However, the installation requires professional hardwiring, which could be an extra cost and effort for some users.

The heater lacks a power cord, meaning buyers need to be prepared for additional setup work. Portability is limited due to its ceiling mount design. This heater is best for those needing a powerful, fixed heating solution for a large garage or workshop.

The TEMPWARE Garage Heater is a powerful 5000-watt electric heater designed specifically for garages and large indoor workshop spaces up to about 592 square feet. It uses a fan-forced heating method with adjustable louvers, allowing you to direct warm air where it’s needed most. It offers three heat settings (3000W, 4000W, and 5000W) to tailor the heating output and has a built-in thermostat that lets you set temperatures between 45°F and 95°F. This thermostat, combined with an ECO mode, helps the unit adjust power automatically to save energy when the garage warms up, making it relatively energy efficient for its size.

Safety is well-handled with ETL certification and built-in overheat protection that turns the heater off if it gets too hot. Portability is not a strong point—the unit is designed for permanent hardwired ceiling installation, meaning an electrician is needed for setup, and it cannot be moved around easily. The heater does not include a power cord and requires 240V power, which is standard for larger garages but not typical household outlets.

If you want a robust, reliable garage heater with smart controls and safety features, and you have a suitable space and electrical setup, this TEMPWARE model is a solid choice. Be prepared for professional installation and understand it’s meant as a fixed unit, not a portable heater.