10 Best Propane Gas Heaters 2025 in the United States

The Mr. Heater MH9BX is a portable propane gas heater designed for outdoor use, ideal for heating small areas up to 225 square feet. It delivers between 4,000 and 9,000 BTUs, which is suitable for personal or small group use, such as camping or RV settings. One of its strong points is safety: it includes automatic shut-off features if tipped over, if the pilot light goes out, or if it detects low oxygen levels, which makes it safer to use in various outdoor environments. It doesn’t require batteries, using a manual ignition system instead, which simplifies operation and reduces the chance of failure.

Portability is good thanks to its lightweight design (around 9.5 pounds) and fold-down handle, making it easy to carry and store. The heater runs on propane tanks (not included) and can operate for about 5.6 hours at the lowest BTU setting, which is decent for overnight or extended use. However, performance can be affected if used at high altitudes above 7,000 feet, where it may shut off unexpectedly. It is specifically approved for outdoor use, so it may not be suitable or safe for indoor spaces without proper ventilation. The heater's clean-burning radiant burner is efficient, making it eco-friendlier than some alternatives.

Assembly is required, but it comes with a manual to guide you. This heater represents a reliable choice for outdoor heating needs in small spaces, especially for RV users or campers who prioritize safety and ease of use.

The Mr. Heater MH540T is a robust propane heater designed for outdoor use, making it a solid choice for activities like camping, tailgating, or sporting events. With a BTU rating of up to 45,000, it offers three heat settings (high, medium, low) which can effectively warm an area of about 100 square feet, making it suitable for small gatherings or enclosed porches. One of its standout features is the 540° radiant coverage, which ensures that heat is distributed evenly in all directions, providing comfort to everyone around.

Safety is a key focus with this heater. It includes a tip-over safety shut-off feature, which adds peace of mind, especially in outdoor settings where it might accidentally get bumped. The secure POL connection minimizes the risk of fuel leaks, ensuring reliable operation.

Portability is another strength, as the heater is lightweight at just 5.5 pounds and requires no assembly, making it easy to transport and set up wherever you need warmth. The easy ignition process, with both a push-button option and backup manual lighting, adds to its user-friendly design.

The heater is designed for outdoor use only, which restricts its versatility for indoor heating. Additionally, while it has impressive heating capabilities, some users may find that it struggles to heat larger areas effectively. The reliance on propane means that you'll need to manage fuel supplies, which could be inconvenient during extended outdoor events.

The Mr. Heater MH540T propane heater excels in providing portable and adjustable heating with strong safety features, making it a great fit for outdoor enthusiasts. Its limitations in heating larger spaces and indoor usage should be kept in mind when considering your needs.

The Mr. Heater Portable Buddy Heater MH9BX offers an adjustable BTU rating from 4,000 to 9,000, making it suitable for heating spaces up to 225 sq. ft. This range ensures you can customize your warmth level, whether you are in a camper, workshop, or patio. One of its standout features is its enhanced safety measures, including a tip-over safety switch and a low-oxygen shut-off system, which add peace of mind during use.

The Piezo igniter provides reliable and quick ignition without the need for matches or lighters, simplifying the operation process. Another advantage is its portability; with a fold-down handle and a weight of 8.53 pounds, it is easy to transport and set up wherever needed. The heater connects to a 1 lb. propane cylinder but can also adapt to a 20 lb. tank with an optional hose and filter, offering flexible fuel usage.

The fuel consumption is relatively high, with a burn rate of 0.044 gal/hr at 4,000 BTU and 0.099 gal/hr at 9,000 BTU, which might mean frequent refueling for prolonged use. Despite this, its fuel efficiency allows for up to 6 hours of heating on the low setting. The product is compact in size, measuring 7.7”D x 13.4”W x 15”H, making it easy to fit in various spaces.