Funmit 42001-0053S Heater Thermistor Replacement for Pentair Sta-Rite MasterTemp & Max-E-Therm – Stainless Steel

Overview

The Funmit 42001-0053S heater thermistor is a purpose-built replacement designed for compatible Pentair Sta-Rite pool and spa heaters, including MasterTemp and Max-E-Therm models. Built to withstand hot days and chlorinated environments, this part helps you monitor water temperature with reliable readings, supporting comfortable pool and spa experiences.

What this replacement offers

• Precise compatibility for Pentair Sta-Rite MasterTemp and Max-E-Therm electrical systems, with model confirmation recommended before purchase.
• Durable stainless steel construction that resists corrosion and wear in pool and spa surroundings, helping extend service life.
• Reliable temperature sensing across a broad range from minus 20 degrees Celsius to 80 degrees Celsius for steady readings.

Benefits in practice

• Accurate readings help support efficient heating system operation for a comfortable water temperature.
• Durable materials reduce the need for frequent replacements in harsh pool environments.
• Easy installation lets you complete a swap in minutes with standard safety steps.

How to install and care

• Power off the equipment and ensure your hands are dry before handling.
• Wear protective gloves and follow standard safety practices during replacement.
• Confirm model compatibility if you are unsure, and contact support for guidance if needed.

Why shop with Funmit

Funmit focuses on simple, straightforward parts and reliable service for pool and spa systems. If you encounter a quality issue, reach out to our customer service team for timely assistance and solutions. This thermistor belongs to a family of replacement components designed to keep your heater functioning smoothly.