How Heat Pumps Work

Heat pumps are a super-efficient way to heat the swimming pool. It makes full use of the advanced refrigeration technology to capture the heat in the outside air and transfer it to the pool water.

Diagram illustrating how a heat pump works

Environmental refrigerant gas absorbs and transfers the heat energy through the refrigeration circulation system. The fan circulates air through the outer Evaporator Air Coil that acts as a heat collector. The liquid refrigerant in the air coil absorbs the available heat in the air transforming it to a gas. The refrigerant gas is then pumped by the Compressor. When this warmed gas is compressed, it intensifies or concentrates the heat. This intensely hot gas is then pumped into the Heat Exchanger Condenser where the actual heat exchange 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 and then into the Evaporator Air Coil to start the process over again.



A heat pump does not generate heat, it simply captures it and moves it from air to water thus, providing an efficient an environmentally friendly system for heating your swimming pool.

Environmental refrigerant gas absorbs and transfers the great heat energy through the refrigeration circulation system. The fan circulates air through the outer Evaporator Air Coil that acts as a heat collector.

The liquid refrigerant in the air coil absorbs the available heat in the air transforming it to a gas. The refrigerant gas is then pumped by the Compressor. When this warmed gas is compressed, it intensifies or concentrates the heat. This intensely hot gas is then pumped into the Heat Exchanger Condenser where the actual heat exchange 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 and then into the Evaporator Air Coil to start the process over again.

How efficient is a water heat pump?

Heat pumps don’t have a simple efficiency number to work with. Their efficiency is measured by Coefficiency of Performance (COP). COP averages at 5.25 across
the range. This means that for every unit of electricity that you put in to run the compressor, you can obtain up to 5.25 units of heat out of the heat pump.

*COP is dependent on a number of factors ie water temperature, air temperature and relative humidity.