HeatPro Above Ground Pool 50K BTU Heat Pump Lightweight, compact and simple to use. Digital control panel For above ground pools up to 13,000 gallons. Titanium Pool Heater and corrosion resistant coated evaporator coil with heavy-duty quiet scroll compressors Requires 220 Volt/30 Amp Service. Has 1-1/2 inch plumbing connections This heater from FamilyPoolFun will extend your swimming season.