Heat pump technology can efficiently collect heat from the outside air down to the 45 to 50 degree range. For tropic and sub tropic climates, this means that the pool can be maintained at 80 to 90 degrees under almost all conditions all year round. In northern climates, a Heat Pump will greatly extend the swimming season. For temperatures below 45 degrees, a Hot Gas option can be added which will allow the Heat Pump to continue to collect heat; however, efficiency drops as the temperature drops.
To determine the potential swimming season in your area, see the Solar Insolation Map and chart below:

|
Swimming Seasons | ||
|
Zone |
No Heater |
Heat Pump |
|
1 |
6-7 months |
12 months |
|
2 |
4-5.5 months |
12 months |
|
3 |
4.5 months |
10 months |
|
4 |
3-4 months |
9 months |
|
5 |
3 months |
6.5 months |
|
6 |
2 months |
5 months |
|
7 |
1-1.5 months |
3-4 months |
To purchase, please visit The Energy SuperMarket

