Pentair MasterTemp 400K BTU Natural Gas Pool & Spa Heater 460736 – High-Performance Heating
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The Pentair MasterTemp 460736 400K BTU Natural Gas Pool & Spa Heater is engineered for maximum heating power and industry-leading efficiency, making it ideal for large residential pools, spas, and high-demand installations. With its compact design, fast heat-up times, and efficient combustion, MasterTemp delivers commercial-grade heating performance without the bulky footprint.
A durable, corrosion-resistant exterior protects the unit in harsh outdoor environments, while easy-access digital controls simplify operation and diagnostics. Quiet performance, reliable ignition, and built-in safety features make the MasterTemp 400K one of the most trusted heaters in the industry.
Compatibility
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Designed for in-ground pools and spas using natural gas.
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Works with standard 2” plumbing connections across most pool systems.
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Fully compatible with Pentair IntelliCenter®, EasyTouch®, and IntelliTouch® automation.
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Suitable as a direct replacement for MasterTemp, Max-E-Therm, and many competitor heater models with minimal plumbing adjustments.