Pool Heat Pump Heating

A pool heat pump uses electricity to operate and also uses the sun-warmed air which contributes to the efficiency of the unit. Heat Pump Pool Heaters do not generate heat.

As the pool pump circulates the swimming pool water, the water drawn from the pool passes through a filter and the heat pump water heater. The heat pump heater has a FAN that draws in the outside air and circulates air through the Outer Evaporator Air Coil.

Liquid refrigerant within the evaporator coil absorbs the heat from the outside air and becomes a gas. The warm gas in the coil then passes through the compressor. The compressor increases the heat, creating a very hot gas that then passes through the condenser. The condenser transfers the heat from the hot gas to the cooler pool water circulating through the heater. The heated water then returns to the pool. The hot gas, as it flows through the condenser coil, returns to liquid form and back to the evaporator, where the whole process begins again.

1. A unit of electrical energy (you pay for) runs the compressor which sucks evaporating Freon gas from the liquid filled evaporator tube. This causes a strong cooling effect (just like sweat evaporates from you skin & cools you off). The gas picks up four units of heat (FREE) from the air flowing over the outside of the evaporator tubes.
2. The compressor squeezes this gas, causing its temperature to climb above 200° F (93° C) Result: Five units of heat added to the gas.
3. The hot, high pressure gas flows through the inside of the condenser coil. The colder 80° F (26° C) pool water picks up the five units of heat from the Freon which cools it down back to a warm liquid.
4. The warm liquid is forced through a valve. As it drops in pressure, it rapidly expands and becomes extremely cold liquid .This liquid flows back into the evaporator At 1 where it repeats the cycle.