Wall Gas Space Heaters Blue Flame and Infrared

Both are vent-free gas wall heaters, but they work in different ways. A blue flame heater works similarly to your home's central heating system by warming the surrounding air, which then rises and circulates to heat the entire room evenly. This makes blue flame heaters a great choice for well-insulated rooms where you want consistent, even warmth throughout the space. An infrared heater works by emitting radiant heat that directly warms people, furniture, and objects in the room, rather than heating the air first. Infrared is more efficient in drafty or poorly insulated spaces, garages, workshops, or rooms with high ceilings where heated air would otherwise escape quickly.

Vent-free means the heater does not require a chimney, flue pipe, or any exterior venting to operate. All combustion byproducts are safely burned off within the unit itself, and the heater is engineered to produce minimal emissions at normal operation. All vent-free heaters sold in the US are required to include an oxygen depletion sensor (ODS) that automatically shuts the unit off if oxygen levels in the room drop below a safe threshold. They are considered safe for use in most occupied rooms, but it is recommended to use them in rooms with at least 50 cubic feet of space per 1,000 BTU of heater output, and to maintain light ventilation. Note that some US states, including California, restrict or prohibit vent-free heaters, so check local regulations before purchasing.

A general rule of thumb is to allow approximately 20 to 25 BTU per square foot of living space in a well-insulated room. For example, a 6,000 BTU heater is suitable for a small room up to about 250 square feet, a 10,000 BTU unit works well for rooms up to about 400 to 450 square feet, and a 30,000 BTU heater can comfortably heat a larger open area of 1,000 square feet or more. If the room is poorly insulated, has high ceilings, or is in a colder climate, consider sizing up to the next BTU range. Our collection ranges from 6,000 BTU all the way up to 30,000 BTU to cover a wide variety of room sizes.

Our collection includes heaters available in both natural gas and propane (LP gas) configurations, but most models are fuel-specific and cannot be switched between the two without a conversion kit. It is very important to order the correct fuel type for your home's gas supply. Natural gas models are designed for homes connected to a municipal gas line, while propane models are ideal for homes using LP tanks. On each product page, the fuel type is clearly stated in the product title, so double-check before adding to your cart. If you are unsure which fuel type you have, contact your gas supplier or check the label on your existing appliances.

Manual control heaters have a simple on/off knob and a manual flame adjustment dial, which you set by hand each time you use the heater. They are straightforward, reliable, and slightly less expensive. Thermostat-controlled heaters include a built-in thermostat that automatically cycles the heater on and off to maintain a set room temperature, similar to how your home's central heating system works. Thermostat models offer greater comfort and fuel efficiency since the heater is not running constantly at full output. If you plan to use the heater as a primary heat source for a room, a thermostat-controlled model like those from HearthRite and HeatStar is the better long-term choice.

Yes. Because these heaters connect directly to a natural gas or propane supply line, the gas connection must be made by a licensed gas professional or plumber. This ensures the connection is leak-free and meets local building codes. The physical mounting of the heater bracket to the wall can often be done by a handy homeowner following the included instructions, but the gas line hookup should never be a DIY task. Some jurisdictions also require a permit for gas appliance installation, so check with your local building department before starting the project.

Yes. A blower fan accessory is available for compatible HearthRite vent-free blue flame and infrared heaters. Adding a blower helps circulate the warm air more effectively throughout the room, improving the overall heating performance especially in larger spaces. The blower fan mounts directly onto the heater and runs on standard household electricity, so you will need an electrical outlet nearby. If you purchase a HearthRite heater and want to add a blower later, the HABLR blower fan accessory listed in our collection is the compatible model. Some HeatStar units come with a blower fan included in the package.

Wall gas space heaters can serve as either a primary or supplemental heat source depending on your situation. For smaller rooms, cabins, garages, workshops, or areas not connected to central heating, a properly sized vent-free wall heater from our HearthRite or HeatStar lineup can absolutely function as the main heat source. For whole-home heating, multiple units placed in key rooms may be needed. Many homeowners also use these heaters as supplemental zone heating, running them in a frequently used room like a living room or bedroom to reduce the load on central heating and lower energy bills. The 30,000 BTU models in our collection are particularly well-suited for larger primary heating applications.