---
product_id: 43369038
title: "Optimum Pool Technologies® Heater Repair Kit Compatible Replacements for Pentair® MasterTemp & Max-E-Therm - Thermistors & Switches"
brand: "optimum pool technologies"
price: "AR$362162"
currency: ARS
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.ar/products/43369038-optimum-pool-technologies-heater-repair-kit-compatible-replacements-for-pentair
store_origin: AR
region: Argentina
---

# Pressure Switch Included Complete Repair Kit High Limit Switch 135°F Optimum Pool Technologies® Heater Repair Kit Compatible Replacements for Pentair® MasterTemp & Max-E-Therm - Thermistors & Switches

**Brand:** optimum pool technologies
**Price:** AR$362162
**Availability:** ✅ In Stock

## Summary

> 🏊‍♂️ Dive into Comfort with Our Heater Repair Kit!

## Quick Answers

- **What is this?** Optimum Pool Technologies® Heater Repair Kit Compatible Replacements for Pentair® MasterTemp & Max-E-Therm - Thermistors & Switches by optimum pool technologies
- **How much does it cost?** AR$362162 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/43369038-optimum-pool-technologies-heater-repair-kit-compatible-replacements-for-pentair)

## Best For

- optimum pool technologies enthusiasts

## Why This Product

- Trusted optimum pool technologies brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **🛠️ Quality You Can Trust:** Manufactured by Optimum Pool Technologies for durability.
- • **💧 Reliable Pressure Monitoring:** Pressure Switch included for enhanced safety and efficiency.
- • **🔧 Comprehensive Repair Solution:** Everything you need to restore your pool heater's performance.
- • **🔄 Compatible with Leading Brands:** Seamlessly replaces Pentair MasterTemp & Max-E-Therm parts.
- • **🌡️ Precision Temperature Control:** Hi Limit Switch ensures optimal heating at 135°F.

## Overview

The Optimum Pool Technologies Heater Repair Kit is a comprehensive solution designed for seamless compatibility with Pentair MasterTemp and Max-E-Therm pool heaters. This kit includes essential components such as a Stack Flue Sensor, Thermistor, Pressure Switch, Hi Limit Switch (135°F), and Gas Shutoff Switch (140°F), ensuring your pool heater operates efficiently and safely. Manufactured by Optimum Pool Technologies, this aftermarket replacement part guarantees quality and reliability.

## Description

Optimum Pool Technologies® Heater Repair Kit Compatible Replacements for Pentair® MasterTemp & Max-E-Therm - Thermistors & Switches

## Features

- Kit Includes: Stack Flue Sensor, Thermistor, Pressure Switch, Hi Limit Switch 135°F & Gas Shutoff Switch 140°F.
- Compatible Replacements for Part Numbers: 42002-0024S, 42001-0053S, 42001-0060S (3902), 42002-0025S, 42001-0063S.
- All parts compatible replacements for Pentair Master Temp & Max E Therm Pool Heaters
- Manufactured by Optimum Pool Technologies
- NOTE: This is a compatible aftermarket replacement part. The manufacturers' names and part numbers have been used for reference purposes only. Optimum Pool Technologies Inc is an independent brand.

## Images

![Optimum Pool Technologies® Heater Repair Kit Compatible Replacements for Pentair® MasterTemp & Max-E-Therm - Thermistors & Switches - Image 1](https://m.media-amazon.com/images/I/31oDRmjjS8L.jpg)
![Optimum Pool Technologies® Heater Repair Kit Compatible Replacements for Pentair® MasterTemp & Max-E-Therm - Thermistors & Switches - Image 2](https://m.media-amazon.com/images/I/71MIBXZSkqL.jpg)
![Optimum Pool Technologies® Heater Repair Kit Compatible Replacements for Pentair® MasterTemp & Max-E-Therm - Thermistors & Switches - Image 3](https://m.media-amazon.com/images/I/51IyAX7a1wL.jpg)
![Optimum Pool Technologies® Heater Repair Kit Compatible Replacements for Pentair® MasterTemp & Max-E-Therm - Thermistors & Switches - Image 4](https://m.media-amazon.com/images/I/51tMDWCHHKL.jpg)
![Optimum Pool Technologies® Heater Repair Kit Compatible Replacements for Pentair® MasterTemp & Max-E-Therm - Thermistors & Switches - Image 5](https://m.media-amazon.com/images/I/41uHgzges4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ These fixed my issue
*by E***. on February 6, 2024*

I have a Pentair HD250 natural gas heater. Bought and DIY installed by me. Except for the gas connection which was done by a professional. I had to replace the touchpad twice in the last 4 years. Although inexpensive, rather disappointing. So on to my latest problem. The heater would fire but after a few minutes would shut off and the red “service heater” light would come on. I could reset the system with the keypad but it would do the same thing over again. So I did some research and it looked to me like it could be one of the sensors in this package. Actually I thought it most likely to be the flue sensor. But since this package covered all the safety sensors and the thermistor I decided to spend the $100 and just replace them all as preventive maintenance as well. I did the flue sensor first and sure enough that alone fixed my issue. It took all of 5 minutes to replace it. I then went ahead and did the other 4 one at a time testing after each one. This took about 30-45 minutes only because I tested after each one. The heater now works like new. I am so satisfied with this package. By the way the water pressure sensor is better than the original it replaced (also same manufacturer) as it is a sealed unit where the original was a plunger style than engages an external micro switch. Also my thermistor was working fine but when I replaced it, it was showing some corrosion.

### ⭐⭐⭐⭐⭐ Fast delivery
*by W***  on May 7, 2024*

Great price fast delivery and everything worked perfectly and great installation video

### ⭐⭐⭐⭐⭐ Repaired my pentair heater!
*by J***T on May 8, 2024*

Replaced the parts and heater came right on.

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-03-07*