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.

Portability is a strong point, with the unit being relatively easy to move and set up. The clean-burning, nearly 100-percent efficient design ensures minimal waste and efficient use of fuel. However, it's worth noting that the heater does not come with a fan in some models due to recent changes in import tariffs, which may affect heat distribution. While the ignition system is straightforward, it requires connection to a propane tank that is not included in the purchase. This heater is ideal for users looking for a reliable and efficient heating solution that prioritizes safety and ease of use, though those in high-altitude areas might need to consider its limitations.

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.

This heater also boasts excellent fuel efficiency, consuming only about 1.389 lbs of propane per hour. This means a minimum 20 lb LP cylinder can provide heat for up to 14.39 hours, allowing for prolonged use without frequent refueling. The built-in thermostat simplifies temperature control, making it easy to maintain a desired warmth level in your space.

Safety is another strong point, as the heater includes an automatic low-oxygen shut-off system that detects drops in oxygen levels, ensuring a safe environment while heating. The battery-powered electronic ignition provides a convenient start-up method, allowing you to get warmth quickly with minimal fuss. However, there are a few drawbacks to consider. The unit is designed for indoor use only and requires proper ventilation, which may limit its placement options in your home. Additionally, while the heater is portable at 30.1 pounds, the wall-mount design may make it less mobile compared to other portable heaters that can easily be moved from room to room. Furthermore, some users might find it a bit bulky for smaller spaces.

This heater is a solid choice for those needing a powerful and efficient heating solution in larger indoor areas, especially in colder climates. Its safety features and thermostat control make it user-friendly, though potential buyers should consider its installation requirements and space suitability.

The Heatstar 30000 Btu Vent Free Radiant Propane Heater with Thermostat and Blower offers a substantial heat output of 30,000 BTU, making it suitable for larger spaces. The adjustable top-mounted thermostat control is convenient for maintaining desired temperatures without constant manual adjustments. Safety is a priority with a built-in low oxygen sensor, which is a crucial feature for indoor propane heaters.

The portability of this unit is enhanced by the option to wall mount or use the included feet kit for free-standing placement. However, at just 1 pound, it might be prone to tipping if not secured properly when used free-standing. This heater is also practical during power outages since it can operate without electricity, though the blower requires power for optimal performance.

The battery-operated electronic ignition (with one AA battery included) simplifies the lighting process. In terms of fuel consumption, propane heaters generally provide a cost-effective heating solution, although specific consumption rates are not detailed here.