Vented/Unvented Space Heaters

electric room heaters are designed to operate within a single space using the indoor room air for combustion. Vented space heaters draw air from the outside for combustion and return flue gases back to the outdoors.
For safety and protection of property, indoor space heaters should be turned off when left unattended and should be periodically inspected by a licensed propane professional or APG Appliance technician for continuous safe operation. As with all propane appliances, space heaters with a visible blue flame is properly adjusted. If yellow or orange flames are observed in space heaters, an appliance technician or licensed propane company should be contacted