The energy savings and advanced operating features of a much larger heater in a compact size! The state-of-the-art pre-mixed gas combustion technology of the MasterTemp 125 heater offers 82% thermal efficiency and ultra-fast heat up. It is so compact that installation by a pool pro is quick- saving you time and money. The rotating digital display is information-rich, convenient for any installation orientation and makes programming and monitoring a cinch. The enclosure is corrosion- and UV-resistant. The 1-1/2 in. plumbing is ideal for up to 15,000 gallons. 125,000 BTU rating. Comes with plug-in 110v. cord and can convert to 240v, gas line up to 50 ft from source. Lightweight: 80 lb.