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 Big Maxx MHU80NG is a strong option for anyone needing to heat a large indoor space like a garage or workshop, thanks to its powerful 80,000 BTU output that can cover up to around 2,600 square feet. It runs on natural gas and offers flexible venting options with powered exhaust for both vertical and horizontal installation, which is handy for fitting it into different room layouts. The spark ignition with a self-diagnostic control module adds convenience and reliability, while safety features like a high-temperature shut-off enhance peace of mind during use.

The ceiling mount design saves floor space, and the heater’s solid build and black finish give it a practical, unobtrusive look. The unit does not include a thermostat, hose, or regulator, so these must be purchased separately to control temperature effectively. The heater is fairly large and heavy (around 86 pounds), so installation might require some effort and possibly professional help. While it is efficient enough for its size, the product information does not specify an exact energy efficiency rating, so users can expect standard performance typical for natural gas heaters in this class.

This heater is ideal for users who want a dependable, high-capacity natural gas unit heater for sizable indoor areas and are comfortable handling or arranging installation and additional controls on their own.

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.