Please enable JavaScript in your web browser for the live calculations to work properly. Heat Pump Selector Use this calculator to choose the appropriate PAL heat pump for your requirements. Enter your specifications Pool Volume (Gallons) Pool Depth (m) Next Pool Type Regular Overflow / Above Ground / Infinity Covered Covered Without Cover Indoor/Outdoor Indoor Outdoor Previous Next Min. Ambient Temperature (°F) Target Water Temperature (°F) 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 Relative Humidity (%) Previous Select My Heat Pump Results Factor 1/β Water Density ρ Latent Heat of Vaporization Pool Surface Wind Speed Vw Pb Pq Pool Surface Area Heat Loss Qs Other Heat Loss Qs' Total Q - @ 26℃