Solar Industries's acquisition of Calorex Heat Pumps ensure that heating your pool is fast, affordable and easy to maintain

Aquatherm Acquires Calorex

Several years ago, Aquatherm in conjunction with one of our distributors acquired Calorex Heat Pumps, the originator of the swimming pool heat pump. Since 1981, Calorex has been producing quality, energy efficient products, a tradition that Aquatherm is continuing to build on.

The Aquatherm AT series of heat pumps are a smart choice when it comes to affordable pool heating. Using proven refrigerant technology, there is no need to worry about gas lines, unsightly propane tanks or venting issues. And hookup is simple.

How a Heat Pump Works

Aquatherm Heat Pumps are a super efficient way to heat your pool or spa. The Aquatherm Heat Pump utilizes proven refrigerant technology to capture the heat in the outside air and transfer it to the pool water. Refrigerant is used because of its ability to absorb and transfer heat energy.

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 (like a magnifying glass in the sun). 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.

Enjoy a Warm Heated Pool and Save

600% Less to operate than Electric Resistance Heaters

70% to 80% Less than LP Gas Heaters

30% to 40% Less than Natural Gas Heaters

10% to 20% Less than Other Heat Pumps

How Does Solar Pool Heating Compare

The cost of installing an electric heat pump is generally comparable to the cost of a solar heating system. The annual cost of electricity to run a heat pump may be two thirds of the cost of natural gas or one third the cost of electricity for a conventional resistance electric heater; but the sun's energy is free.

But, remember a heat pump has a refrigeration system with a fan motor and compressor. When these mechanical systems wear out they can be expensive to replace. However, in the unlikely event that your pool is one of the few on which a solar system cannot be installed, a heat pump may be your best alternative.