The Pentair MiniMax 100,000 BTU Natural Gas Heater is a compact, lightweight and efficient gas fired, high performance above ground pool and spa heater. It can be connected to schedule 40 CPVC or ABS pipe and has a built-in top. The 460347 MiniMax 100 is equipped with a reliable direct spark ignition (DSI) system. The MiniMax 100's controls have been designed for very easy access and are user friendly. This heater has bronze headers and features quiet and dependable operation from it's packaged burner system. The Natural Gas MiniMax 100 is a Electric standing pilot version. It's low profile and low weight make it versatile and simple for a one person installation.