10 Best Portable Gas Heater 2025 in the United States

The Camco Olympian Wave-6 Portable Catalytic Safety Heater is designed for RV use with a heating capacity ranging from 3,200 to 6,000 BTUs, ideal for warming up to 200 sq. ft. Its catalytic heating method ensures efficient and safe operation without the need for an open flame, making it a suitable choice for indoor use. The heater is versatile in placement, offering portability with optional leg stands and the ability to function outdoors.

Weighing 15.2 pounds and with dimensions of 20.6 x 13.6 x 6 inches, it is compact enough for various setups. Safety features include a self-generating piezo starter that lasts for 20,000 starts and a safety shut-off valve, contributing to its reliability and longevity. The heater operates silently without a fan or blower, enhancing the comfort level without noise disruption.

However, it should be noted that this model does not include a fan for forced air distribution, which could limit its heat dispersion somewhat. Also, while it is portable, the weight may be a consideration for some users who need to move it frequently. This heater excels in energy efficiency and safety, making it a dependable choice for RV owners or anyone needing a portable heating solution.

The Mr. Heater MH540T is a powerful portable propane heater designed for outdoor activities like camping, hunting, and tailgating. One of its key strengths is its impressive heating capacity, offering up to 45,000 BTUs with three adjustable heat settings (high, medium, and low). This allows users to customize the warmth to their preference, making it versatile for different weather conditions. The 540-degree radiant coverage is another standout feature, providing wide-reaching heat by combining a 360-degree burner and a 180-degree swivel bracket, effectively warming both people and objects directly around it.

Safety is a priority with this heater, featuring a tip-over safety shut-off that automatically turns the heater off if it’s knocked over, preventing accidents. Additionally, the secure, leak-free connection ensures dependable and safe operation. In terms of ease of use, it boasts a push-button TE valve for quick ignition and also offers a manual match-lit ignition as a backup. However, it’s important to note that this heater is for outdoor use only, which limits its versatility.

Portability is a major plus, as it’s lightweight at just 5.5 pounds and doesn't require any assembly, making it easy to move and set up. On the downside, because it uses propane, it may not be the most energy-efficient option compared to electric heaters. The Mr. Heater MH540T is an excellent choice for those needing a reliable and powerful source of outdoor heat, particularly for active outdoor enthusiasts.

The Mr. Heater Buddy Flex Heater offers a strong heating capacity ranging from 8,000 to 11,000 BTU, making it suitable for spaces up to 275 square feet. This makes it a great choice for both indoor and outdoor use, particularly in medium-sized rooms like bedrooms or home offices. The heater uses propane, which is a convenient and widely available fuel type. Its omni-directional mesh burner ensures even heat distribution, providing a cozy environment in a 180-degree radius.

Safety features are robust, with a Thermal Shutdown System (TSS) and tip-over shutoff, making it safe for families and pets. Additionally, the heater includes a low-oxygen safety shutoff, further enhancing its safety profile. Portability is a key advantage, as the heater is lightweight at 10.85 pounds and includes integrated storage for convenience. The user-friendly design features electronic ignition and a single control gas valve, making it easy to operate.

However, it’s important to note that the heater does not come with adjustable heat settings, which might limit its flexibility in different temperature conditions. While it is energy-efficient, the lack of adjustable settings might make it less versatile for varying heating needs. The Mr. Heater Buddy Flex Heater is a reliable and portable heating solution with strong safety features and good heating capacity, though it lacks adjustable heat settings which could be a drawback for some users.