10 Best Garage Heaters 2025 in the United States

The Mr. Heater Big Buddy Pro Series is a portable propane heater designed to warm spaces up to 450 square feet, making it a solid option for medium-sized garages. Its heating capacity ranges from 4,000 to 18,000 BTUs, offering flexible warmth levels through low, medium, and high settings. The heater uses clean-burning propane, which is nearly 100% efficient, and can be used indoors or outdoors. This versatility is useful if you need a heater that can move between your garage and outdoor areas.

Safety is a strong point here: it features automatic shut-off if tipped over, if the pilot light goes out, or if low oxygen levels are detected, adding peace of mind when working in enclosed spaces like garages. The adjustable temperature control knob allows you to maintain a steady, comfortable heat without fuss. It runs on a standard propane tank (not included), so you don’t need an electrical outlet, which is helpful in garages that may lack convenient power sources. Weighing only 11 pounds and having a pedestal form factor, it is relatively easy to move and install, although it is designed primarily for floor or wall mounting rather than ceiling suspension.

On the downside, some newer models no longer include a fan, which means heat distribution relies on radiant warmth rather than air circulation, potentially resulting in less even heating across larger areas. Additionally, it may shut off at altitudes above 7,000 feet, which might be a concern for users in high-elevation locations. You must avoid unauthorized accessories to keep the warranty valid and ensure safety. The need for 4 D batteries to operate the ignitor is a minor inconvenience but worth noting. This heater is well-suited for garage users looking for a portable, propane-fueled option with reliable safety features and adjustable heat levels, but it may not be ideal if you want fan-assisted heat or plan to use it at high altitudes.

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 Dr Infrared Heater DR-268 is a versatile electric infrared heater designed to warm small to medium spaces, like garages, greenhouses, or sheds, covering around 150 to 200 square feet. It uses radiant heat, which warms objects and people directly rather than just heating the air, making it efficient especially in areas prone to heat loss. It offers two power settings (1000W and 1500W), allowing some control over heating intensity. This model stands out for its built-in digital thermostat and temperature sensor probe, making it easy to set and maintain your desired temperature from 30°F up to 120°F. The heater is water-resistant (IPX5 rating), so it can be used safely in damp environments like greenhouses or garages.

Its lightweight design and multiple mounting options (wall, ceiling, or hanging) add flexibility for different spaces, though it does require assembly. Safety is well-considered, with overheat protection and ETL certification to assure quality and reliability. However, the heating capacity is best suited for smaller areas, so it may not be ideal if you need to heat a large garage. Also, since it’s electric, it needs a nearby power outlet and may increase electricity usage.

The digital display and remote control features enhance convenience, but some users may find the size (about 35 inches deep) a bit bulky for very tight spaces. This heater is a solid choice if you want efficient, direct infrared heat with precise temperature control and safety features, particularly in moderately sized garages or similar spaces.