474989 Thermal Regulator by Pentair | MasterTemp 125 Pool Heater Replacement Part

474989 Thermal Regulator by Pentair | MasterTemp 125 Pool Heater Replacement Part

Marsoni

M251S

$79.99

Get it in 3 business days with 1 day shipping. Friday, May 29

474989 Thermal Regulator by Pentair | MasterTemp 125 Pool Heater Replacement PartKeep your pool or spa at the ideal temperature with the Pentair Thermal Regulator 474989, purpose built for MasterTemp 125 heaters. This precision engineered component governs water temperature with accuracy, safeguarding against overheating while delivering steady, comfortable warmth. Fabricated from premium grade materials built to endure continuous use, this thermal regulator stands up to the demands of daily heater operation. Periodic inspection

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Comfy but cheaply made. I bought these for the price and expected them to be not the best quality but they are even less than I expected. Please also note that they run small. I got a 10-11 since I wear 11 shoe and Amazon recommended this size. I think a size larger would have been better. Not worth returning though. I’ll just wear them this winter if they last that long and get a better brand next time.

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Reviewed in the United States on December 25, 2025

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L R

Draper, US

★★★★★ 5

I will buy these again.

Size: 12-13, Color: Cable Knit Brown

These are great. They’re warm and comfortable.

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Reviewed in the United States on May 5, 2026

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