http://www.youtube.com/watch?v=MlJII80n8C8
Heating Repair in Charleston SC
A heat pump not only heats your home during the winter, it also cools it during the summertime. It does not burn fuel to produce heat nor does the electrical energy it consumes undergo an element. The heat pump functions on the exact same principle as refrigerators and ac unit: A liquid takes in heat as it becomes a gas and releases heat as it returns to a liquid state.
During the summertime, the heat pump operates as a basic central air conditioner: It eliminates heat from our home and vents it to the outside. A liquid refrigerant is pumped through an evaporator coil of tubing. The liquid expands as it moves through the coil, changing to its gaseous state as it takes in heat from the air surrounding the coil.
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