Pentair Mastertemp 400k BTU Gas Heater
Original price was: $5,595.00.$4,795.00Current price is: $4,795.00.
Description
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Fast, Efficient Heating. Year-Round Comfort.
The Pentair MasterTemp® 400,000 BTU Heater delivers quick, reliable heating for pools and spas—so you can swim comfortably any season.
Designed for replacement installs, this model connects to your existing natural gas or propane line at the pool equipment pad.
- Heats fast — reach your target temperature quickly with 400k BTUs of power.
- Energy-efficient design saves fuel while maintaining consistent temps.
- Quiet, compact build fits neatly at the equipment pad without excessive noise.
- Durable housing withstands Phoenix heat and poolside weather.
- Backed by Pentair quality and warranty support.
Gas/propane line must already be at equipment pad.
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This install assumes: your equipment area already has a natural gas or propane line stubbed in and sized correctly for 400k BTU demand.
- Replacing an old heater? We simply disconnect the old unit and tie the MasterTemp into the same line.
- No gas line? That requires a plumber to run new pipe from the meter/propane tank—outside the scope of this package.
- Ask us if you’re unsure about your setup—we’ll confirm before scheduling.
How it works
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Gas in, heat out:
- Natural gas or propane flows into the heater’s combustion chamber.
- A safe, efficient burner system ignites the fuel, producing controlled heat.
- Water circulates through an internal copper heat exchanger, absorbing the heat.
- The result: warm water flows right back to your pool or spa.
Bonus: digital controls let you dial in your desired pool or spa temp, then the heater automatically maintains it.
Note: Online discount applies to purchases initiated through our website.
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