10 Best Wall Mounted Gas Heaters 2025 in the United States

The Rinnai EX22DTWN Direct Vent Wall Furnace is a solid choice for those seeking an efficient and reliable indoor gas heater. With a heating capacity of 21,500 BTU, it effectively warms a variety of spaces while maintaining consistent temperatures. This model utilizes advanced modulating technology, which reduces cold spots, ensuring a comfortable environment throughout your home.

One of the standout features is its energy efficiency. The heater is designed to minimize fuel consumption by adjusting heat output based on your specific needs, which can lead to noticeable savings on energy bills. The programmable thermostat further enhances this efficiency, allowing you to set and maintain your preferred temperature easily.

Safety is another key strength of the Rinnai EX22DTWN. It boasts a cool-to-the-touch cabinet, making it safe for homes with children, and its self-diagnostic electronics help ensure reliable operation. These features provide peace of mind, especially for families.

The compact design of the heater is a significant advantage too, particularly for urban dwellers or those with limited space. It can fit seamlessly into various room layouts without becoming an eyesore. Additionally, the unit operates noiselessly, providing a quieter alternative to some traditional heating systems.

While the heater is efficient, its initial purchase price might be higher compared to some less advanced models. Also, as it requires professional installation due to its direct venting system, this could add to the overall cost. Potential users should ensure that their home’s ventilation system is compatible with this type of heater, as this could limit installation options.

The Rinnai EX22DTWN is well-suited for those looking for an energy-efficient, safe, and stylish wall-mounted gas heater. Its smart technology and compact design make it a practical choice for many homeowners.

The Mr. Heater F260550 Big Maxx MHU50NG Natural Gas Unit Heater is a robust choice for heating spaces up to 1250 sq. ft., making it ideal for garages or larger rooms. With a heating capacity of 50,000 BTU per hour, it ensures quick and efficient warming. It supports versatile installation with both vertical and horizontal venting options, thanks to its powered exhaust system, which adds flexibility in placement and is particularly useful in tight spaces. Additionally, the included natural gas to liquid propane conversion kit offers adaptability depending on available fuel sources.

The thermostat and A/C terminals are easily accessible from the outside, simplifying adjustments and installation. Its design requires at least 8 feet of clearance from the floor to its base, which may restrict placement in some areas with lower ceilings. Safety is a priority with a high-temperature safety shut-off switch, providing peace of mind during operation. The unit comes with a limited 3-year warranty on parts and burners and a 10-year warranty on the heat exchanger, reflecting confidence in its durability.

At 66 pounds, it is relatively heavy, but the ceiling mount brackets included should aid in installation. While this heater is built for indoor use, particularly in garages, those needing a heater for living rooms or bedrooms should consider the ventilation requirements and safety clearances. This heater is a practical and dependable option for those needing substantial heating power in specific indoor settings.

The Rinnai EX38CTN Space Heater Wall Furnace is a solid choice for those needing a powerful and efficient heating solution. With a heating capacity of 38,400 BTU, it can comfortably heat large spaces up to 3,840 square feet, making it suitable for homes, apartments, and even commercial settings. It boasts energy-efficient features such as a seven-stage modulating gas valve and a variable speed inducer motor, which help in maintaining consistent and cost-effective heating.

The electronic spark ignition and electronic thermostat, which ranges from 60°F to 80°F, offer precise control over the heating process. Additionally, its direct vent design ensures safe and efficient operation by expelling combustion gases directly outside. Safety is another strong point with this furnace, featuring child lock and self-diagnostic electronics that provide auto shutdown codes and automatic restarts in case of ignition or combustion failure. These features ensure peace of mind, especially in homes with children.

The design includes timer settings for added convenience and a relatively compact size that can be wall-mounted, saving floor space. However, it's worth noting that this model has been discontinued, and potential buyers might need to look at the new model, EX38DTN, for updated features and support. The heater's weight of 88 pounds means it requires proper installation support, and assembly is needed.