The MasterTemp 125 Heater provides energy-savings and advanced operating features that were only available from much larger heaters. With its revolutionary pre-mixed gas combustion technology, the MasterTemp 125 Heater offers 82% thermal efficiency. The advanced LCD display/controller provides more information and better control.

• High-performance, affordable heater with premium features.

• 82% energy efficiency is highest in class.

• 1-1/2in plumbing connection - ideal for smaller bodies of water, including aboveground pools, spas and inground pools up to 15,000 gallons.