Rapid Heating: Powered by clean electricity, this pool heat pump generates up to 18.12–88.85 kBTU with a COP of 12.08–5.74. Using R32 refrigerant, it quickly extracts and delivers heat from the air to raise pool water temperature, reducing wait time Full DC Inverter Technology: This above ground pool heater uses a high-performance inverter compressor, salt- & chlorine-resistant spiral titanium heat exchanger, and pure copper evaporator. Operates reliably from 5–109 ℉ ( -15–43 ℃)year-round Smart WiFi & App Control: With built-in OTA updates, WiFi, and app-based remote control, this electric pool heater allows you to easily adjust heating, cooling, silent mode, water temperature, and timers. No walking back and forth to the unit Secure & Quiet Operation: Our swimming pool heat pump features multiple noise reductions and a low-noise brushless fan at 52 dB. It adopts R32 refrigerant, low/high pressure protection, water flow protection, and automatic defrost for added security Wide Compatibility: This inground pool heater is ideal for pools 13208–22454 gals (50–85 m³) in homes, hotels, resorts, and spas. It features 1-1/2 in inlet/outlet ports and adapters for 1.9 in (48.3 mm) pipes. Minimum inlet flow: 25 GPM