General considerations

A heat pump pool heater effectively heats your pool when the ambient air temperature reaches 45 to 50° F or more.

• You could effectively heat when ambient air temperature is lower, if you reduce the water flow.

You will obtain a maximum performance from your heat pump when the inside pressure of your refrigerant fluctuates between 230 PSI and 300 PSI. In such a case the temperature in your condenser will reach 110 to 130 ° F and your heat transfer will be maximized.

In normal summer weather conditions, most of the heat pumps in the market are configurated to operate at full flow of water generated by your filter pump.

• Flow restriction increase the inside pressure of the refrigerant. In cool weather conditions, it will help increase performance. In hot weather conditions, it could bring your system in high pressure situations and shut off the heat pump.
• The auto flow switch normally stop your heat pump when water flow reaches 15 G.P.M or less.
• The high pressure auto reset normally stops your heat pump when inside refrigerant pressure exceeds 350 PSI or more. Theses conditions (parameter) could change, depending on manufacturing technology.

In operating mode, the evaporator condensate and removes moisture from the air. When the air temperature falls under the limit, this moisture will begin to freeze creating frost on the finned coil of the evaporator. When this situation happens, the auto defrost switch will activate the defrost system to eliminate the problem. Frost can occur when temperatures reach 45° F or less.

A heat pump is built to heat your pool economically 24 hours a day, maintaining your desired pool water temperature, for all the summer period.

Your heat pump performance will fluctuate depending on water and weather temperatures. Between 50 to 65 ° F, it will increase your water temperature by 5 to 10° F a day. Over 70° F you should obtain an increase up to 1.4° F a hour and over 80° F up to 2° F a hour depending of the size on the pool, the size of the heat pump, the water temperature, and the ambient air temperature at the moment of operation.

At the start, a heat pump heat slowly but at 70° F plus situation, it perform well and to maintain your desired temperature it could run as little as 2 hours per day.