Unit heater service repair and install should be done by a certified contractor. Unit heater is a ductless, forced air heating unit that is designed to heat a large area or to be used in a specific heating application. These units may be gas fired or electric. In a unit heater, an electric blower moves air across the heat exchanger and into the space to be heated. Many commercial buildings , warehouse and factories use unit heaters to heat rooms or space that cannot be effectively or efficiently heated.
Unit heaters are typically used in areas with high ceilings, and are exposed in the space to be heated. Operation of these system is control by a door switch and a thermostat connected in parallel. These units typically have a heat exchanger, a blower fan motor, which blows air from the room over the heat exchanger to be heated. This can be a blade fan or squirrel cage fan. Unit heaters are not certified for residential use and should only be install in commercial and industrial applications. Unit heaters should be service and inspect once per year as per manufacture recommendation. Failure to do so, may result in Bad Air Quality, Equipment Failure or Carbon Monoxide Poisoning.
Notes: Unit heater service repair or install must comply with local codes, rules and regulations. Technical Safety BC advice customer to have only certified gas contractor working on their gas appliance.
Regulations energy efficiency
All gas unit heaters soled in Canada are subject to Canada’s Energy Efficiency Regulations, which set a minimum performance standard for their energy efficiency. The current minimum standard is thermal efficiency of 80 percent or more. Also, the unit must be equipped with an intermittent ignition device and either: a power-vented system; automatic vent damper; or automatic flue damper.