10 Best Portable Propane Heaters With Thermostat 2025 in the United States

The Mr. Heater 18,000 BTU Big Buddy Pro Series Portable Propane Heater is a versatile option for both indoor and outdoor use, capable of heating spaces up to 450 square feet. It boasts a BTU rating range from 4,000 to 18,000, providing flexibility in heat output. The built-in thermostat control allows for easy adjustment between low, medium, and high settings, which helps maintain a steady temperature according to your needs. Safety features include an auto shut-off mechanism that activates if the heater is tipped over, if the pilot light goes out, or if low oxygen levels are detected, making it a safe choice for various environments. However, the heater may experience shut-offs at altitudes above 7,000 feet, which could be a drawback for high-altitude users.

The Mr. Heater 30,000 BTU Vent Free Radiant Propane Heater is designed to provide efficient and effective heating for medium-sized spaces, making it ideal for cold rooms, sunrooms, cabins, and additions. With a powerful output of 30,000 BTUs, it can cover areas up to 1,000 square feet, delivering a warm and cozy atmosphere. One of its main strengths is the advanced infrared technology that radiates heat directly to objects and people, mimicking the natural warmth of the sun, which many users find comforting.

The Dyna-Glo Signature Series 20,000 BTU Liquid Propane Blue Flame Thermostatic Vent Free Wall Heater is a solid choice for those needing an effective indoor heating solution. With a BTU rating of up to 20,000, it can comfortably heat spaces up to 700 square feet, making it suitable for medium-sized rooms. The built-in thermostat control is a convenient feature, allowing users to maintain their desired heat level automatically without manual adjustments, which is very user-friendly.