10 Best Propane Heaters For Indoor Use 2025 in the United States

The Rinnai EX17DTP is a wall-mounted propane heater designed for indoor use, offering a solid 17,000 BTU heating capacity that can comfortably warm up to 1600 square feet, making it suitable for bedrooms, home offices, or garages. Its energy-efficient radiant burner and advanced modulating technology help maintain a consistent temperature, eliminating cold spots without wasting fuel.

Safety is well addressed with a cool-to-the-touch cabinet and self-diagnostic electronics, which is reassuring for families with children. It also features a programmable thermostat that can integrate with Wi-Fi systems, giving you control over your home's warmth with ease. The heater requires proper direct venting since it’s a direct vent wall furnace, so installation should follow ventilation guidelines to ensure safe indoor air quality.

While it’s wall-mounted and compact, it weighs 67 pounds, so it’s not portable or easy to move around once installed. The quiet operation and energy-saving design are significant advantages, making this heater a smart choice for homeowners looking to efficiently heat indoor spaces safely and quietly with modern thermostat controls, as long as they can accommodate the venting and wall-mounted setup.

The Rinnai EX11DTP is a wall-mounted indoor propane heater rated at 11,000 BTU, suitable for heating spaces up to around 1,600 square feet, such as bedrooms, home offices, or study rooms. Its direct vent system ensures safe operation by channeling exhaust outdoors, which is important for indoor propane heating as it reduces indoor air contamination. Safety is a strong point here—the heater features a cool-to-touch exterior and self-diagnostic electronics, making it family-friendly and reliable. The programmable thermostat adds convenience by letting you set and maintain comfortable temperatures, and the option to connect with Wi-Fi enhances control if you prefer smart home integration.

This heater is energy efficient, designed to adjust fuel usage based on heating needs, which helps save on fuel costs while keeping your space warm quietly. However, being wall-mounted and weighing 53 pounds, it isn’t very portable; this model is best for a fixed heating solution rather than moving between rooms. Also, as a direct vent unit, it requires proper installation with ventilation to the outside, which might limit placement flexibility and could involve additional setup costs.

If you want a safe, efficient, and space-saving propane heater for indoor use and don’t mind professional installation, the Rinnai EX11DTP is a strong choice. It is less suited if you need a portable heater or a simple plug-and-play option.

The Rinnai EX08DTP is an indoor, wall-mounted propane heater with an 8,000 BTU rating, making it suitable for heating spaces up to about 1600 square feet, such as bedrooms or home offices. It uses direct vent technology, which means it vents exhaust gases outside, a key safety feature that helps maintain indoor air quality. The heater includes smart safety features like a cool-to-the-touch cabinet, child lock, and self-diagnostic electronics that can shut down the unit automatically if something goes wrong. It has an electronic spark ignition, which is reliable and easy to use, eliminating the need for batteries or matches.

This model offers precise temperature control with an electronic thermostat adjustable between 60 and 80°F, plus a 7-stage modulating gas valve for efficient and consistent heating. It also features a variable speed inducer motor that quietly manages airflow, keeping noise levels low. However, it is a wall-mounted unit that weighs 53 pounds, so it isn’t portable and requires professional installation, which is recommended to ensure safe setup.

While it is energy efficient and quiet, the heater's fixed location and installation needs might not suit those looking for a portable or temporary heating solution. The temperature range is somewhat limited, which may not satisfy users wanting higher heating settings. For those seeking a safe, efficient, and smart propane heater for continuous indoor use in a dedicated space, the Rinnai EX08DTP represents a strong option.