Pentair Thermal Regulator Replacement, MT125 | 474989 Column Built specifically for natural gas

Built specifically for natural gas applications

Using this part during a targeted repair reduces downtime and helps ensure proper fit within the skimmer

Compatible Design: Works with various pool and spa systems

Water is leaking at the heater connection point

12 ft × 24 ft or 16 ft × 26 ft

Pentair Thermal Regulator Replacement, MT125 | 474989 Column Built specifically for natural gasWhat This Part Is Used For Pentair 474989 Thermal Regulator Replacement MT125 is a replacement thermal regulator for compatible Pentair MasterTemp 125 heater models. It helps manage water temperature flow through the heater assembly. Why This Part Matters A faulty thermal regulator can lead to improper heating or error conditions. Replacing it restores correct water flow regulation inside the heater. Proper thermal control helps protect internal