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Item # 461059


High Efficiency, Leading Technology - Designed for Pool and Spas up to 15,000 Gallons in Size

The incredibly affordable MasterTemp 125,000 BTU heater offers both the energy savings and advanced operating features, including those typically found only on more expensive units! Using unique pre-mixed gas combustion technology, this MasterTemp heater offers 82% thermal efficiency - the highest of any heater in its category. With 1 1/2" plumbing and an included 120V cord for easy power, this compact heater is ideal for smaller applications such as aboveground pools, hot tub and spas, and inground pools up to 15,000 gallons in size. The MasterTemp 125,000 BTU heater also offers the first ever rotating, digital display in its class, providing valuable information at the touch of a button to the user. To use with propane fuel, you must purchase part number 461063 to convert the natural gas connection to accept propane.


  • Best-in-class 82% energy efficiency rating
  • Pre-mixed combustion technology for ultra-fast heat-up
  • Certified eco-friendly, low NOx emission operation that outperforms industry standards
  • Easy-to-use, rotating digital display for programming and monitoring
  • A tough, rustproof exterior that handles heat and the elements
  • 240V electrical connections for operation
  • 1 1/2" PVC union connectors
  • 120V ready with 3 prong plug (240V capable)

Product Includes a 1 Year Manufacturer's Warranty (proof of installation by a licensed technician is required for valid warranty coverage).

Warranty Coverage: At the manufacturer's discretion. Limited warranty covers replacement parts ONLY if the heater is installed with a pool or spa. The Applicable Warranty Period is one (1) year from the Purchase Date or 90 Days on the Heating Element. The warranty does not cover damage caused by improper water chemistry. The warranty will be void if the heater is not installed by a licensed technician, or the heater has been installed on a soft sided pool. Please see product manual for specific warranty details.

Pentair MasterTemp 125 High Performance Heater

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