What Blue Flame Heaters Are

Blue flame heaters are gas-powered heating units that burn with a characteristic blue flame. They may be vented or ventless heaters. Vented units require an exhaust flue installed through the wall to the outdoors to remove noxious gases that are produced. Ventless units do not require outside venting and are generally used in areas where sufficient airflow is available. Both types of units have shutoff mechanisms that activate when the oxygen in a room is depleted.

How Blue Flame Heaters Work

Blue flame heaters work by steadily burning the gas fuel to warm air, which is then circulated throughout the room in a steady stream. This technique offers a better overall warming of the living area without intense hot spots that are frequently experienced with infrared heating units. The warmed area is wider and more comfortable. I

In unvented units, the high efficiency of the unit burns the fuel almost entirely, leaving no toxic waste to be vented. These units are best used in areas that are not tightly insulated, so the free flow of air helps to dissipate any residual waste gas. In rooms with a high level of insulation, a vented unit must be used. A flue is then vented to an outside wall to release the gases that might otherwise build up in the room.

Advantages of Blue Flame Heaters

Because blue flame heaters circulate warmed air, they do not project extreme heat outward; this makes them less hazardous near furniture and other objects. Blue flame heaters can also be regulated more precisely because they are equipped with thermostats, unlike infrared heaters, which are generally more fully on or off, according to the Vent Free Wall Heaters website. Blue flame heaters provide more comfortable and widespread heating of an area. They are also highly energy-efficient appliances, burning 99.9 percent of the fuel. Blue flame heaters are generally inexpensive, as well, providing adequate heating for small zones.

Precautions for Blue Flame Heaters

Ensure that your heater is equipped with an oxygen depletion sensor, also called an ODS. These devices are mandated by the federal government for unvented systems. Homeowners should read the manufacturer’s instructions carefully and only use their blue flame heater according to directions. Clean the burner of the unit regularly with compressed air to remove dust and dirt. Be aware of any symptoms of nausea and dizziness that could indicate a malfunctioning of the heater.