The Mastertemp 125 is a compact, lightweight and efficient (82%) gas fired high performance heater for aboveground pools, spas, or small inground pools. It can be connected to schedule 40 CPVC or ABS pipe and has a built-in top. Reliable direct-spark ignition (DSI) system is available in propane or natural gas versions.

Digital controls for precise temperature
Quiet and dependable operation
Pre-mixed gas combustion technology
Corrosion resistant resin headers
Corrosion and UV resistant enclosure
Low profile and lightweight.