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Air conditioners

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Air conditioners

Heating seasonal performance factor

Household appliances; Air conditioners

Means the total heating output of a heat pump in British Thermal Units during its normal usage period for heating divided by the total electrical energy input in watt-hours during the same period.

Horizontal furnace

Household appliances; Air conditioners

A furnace that lies on its side, pulling in return air from one side and expelling warm air from the other.

Damper

Household appliances; Air conditioners

Found in ductwork, this movable plate opens and closes to control airflow. Dampers are used effectively in zoning to regulate airflow to certain rooms.

Defrost cycle

Household appliances; Air conditioners

The process of removing ice or frost buildup from the outdoor coil during the heating season.

Dehumidification

Household appliances; Air conditioners

The reduction of water vapour in air by cooling the air below the dew point; removal of water vapour from air by chemical means, refrigeration, etc.

Department of Energy

Household appliances; Air conditioners

A federal agency that sets industry efficiency standards and monitors the use of various energy sources.

Direct expansion systems

Household appliances; Air conditioners

One of two types of basic cooling media (the other is chilled water). Direct expansion systems utilise freon for cooling and dehumidification. The three most common methods of heat rejection are air ...

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