Electric, Wood- Electric and Oil-Electric forced air furnaces are not as common as those fired by natural gas or oil.
All forced air heating systems have a duct system to distribute the heat throughout the house and can accommodate central air conditioning, humidifiers, HRVs, and whole-house air cleaners.
Forced air heating is probably the type most commonly installed in North America. |
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| Forced Air Heating - Other Systems |
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Electric furnace. Wood- Electric furnace. Oil-Electric furnace. Water to air heating.
Electric, Wood- Electric and Oil-Electric forced air furnaces are not as common as those fired by natural gas or oil.
Hot water and forced air. This type of forced air heating is getting more and more attention as it should. It makes sense and is more economical to install and operate.
In this system the water heater is used as a 'furnace' that heats the house and supplies hot water. A large water heater can be used with a forced air system by installing a water-to-air heat exchanger coil in the ductwork. The heat exchanger coil is just a radiator like you find in a car. When the house needs heat the circulation fan blows air over the hot water coils and the heated air is distributed through the ductwork to the living areas of the house.
The water heater for hot water and forced air heating systems must be larger than usual and rated for space heating use. |
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| Definition of Heat Exchanger. A heat exchanger is a device built for efficient heat transfer from one medium to another, whether the media are separated by a solid wall so that they never mix, or the media are in direct contact. One common example of a heat exchanger is the radiator in a car, in which the heat source, being a hot engine-cooling fluid, water, transfers heat to air flowing through the radiator. |
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