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Mastertemp 400k Cupro Nickel BTU Natural Gas Pool Heater

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Mastertemp 400K
Cupro Nickel Manual

Model # 460805


The Pentair MasterTemp 400,000 BTU Heavy Duty Pool Heater features a Cupro-Nickel Heat Exchanger designed to handle the harshest environments includling low pH, high flow and heavy use. Cupro-Nickel is also recommended for pools using salt systems. Certified for Low NOx emissions and regularly outperforms all industry standards.

MasterTemp pool heaters come standard with a rotating digital display so you can position your controls where you need them. The digital controls are very simple to operate and there is no pilot light to deal with. Pentair heaters feature a pre-mixed system with a very efficient gas and air mixture that allow the heater to heat up quickly and heat your pool faster.

MasterTemp offers all the efficiency, convenience and reliability you want in a pool heater, plus a lot more. As easy to use as your home heating system, plus, user-friendly indicator lights make system operation and monitoring a snap. The compact design and super quiet operation won't intrude on your poolside leisure time. It easily stands up to the elements with its tough, corrosion proof composite exterior. Its compact design is an added bonus, requiring a smaller equipment pad and taking up less of your poolscape!


  • Designed for tough environments

  • Stands up to salt, low pH, high flow and heavy use

  • Highly efficient air & gas mixture for quick heating

  • 400,000 BTU natural gas pool heater

  • Heats up fast, no long waits before enjoying your pool or spa

  • Best-in-class energy efficiency

  • Easy-to-Read LCD Display with enhanced diagnostic capabilities

  • Tough, rustproof exterior handles the heat and weathers the elements

Pentair mastertemp pool heater

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