• How does a heat pump work ?

The fan circulates air through the outer evaporator air coil that acts as a heat collector. The cooler liquid refrigerant in this air coil absorbs the available heat from the warmer ambient air. This process transforms the liquid refrigerant into a warm gas.

The warmed refrigerant gas is then pumped into the compressor. When this warmed gas is compressed, it intensifies or concentrates the heat, like a magnifying glass in the sun.

This intensely hot gas is then pumped into the heat exchanger condenser, where the actual heat transfer takes place. As the pool water passes through the heat exchanger, the hot gas gives up its heat to the cooler pool water.

The refrigerant returns to a liquid state and is pumped through the expansion valve then into the evaporator air coil where the process cycle starts all over again.