72493 Watkins Temp Sensor Thermistor 3/8″ for Hot Tubs and Spas

The 72493 Watkins Temp Sensor Thermistor 3/8″ is a vital temperature-sensing component designed for use in many Watkins hot tubs and spa systems. Accurate water temperature is essential for a safe and comfortable spa experience, and this sensor ensures your spa maintains the correct settings by relaying precise temperature data to the control system.

This thermistor features a 3/8″ bulb and is commonly installed in the heater assembly or a designated temperature port within the plumbing system. It works with Watkins systems such as Hot Spring, Tiger River, and other models manufactured by Watkins Wellness.

Features of the 72493 Watkins Temp Sensor Thermistor 3/8″

• Designed specifically for use with Watkins-made spa systems 
• 3/8″ temperature-sensing bulb for accurate readings 
• Durable wiring and waterproof housing 
• Connects directly to the spa’s control system 
• Helps regulate water temperature and prevent overheating or cooling 
• Simple installation using existing ports or thermowells 

Importance of the 72493 Watkins Temp Sensor Thermistor

The 72493 Temp Sensor plays a key role in protecting the spa from issues caused by inaccurate temperature readings. If the sensor is faulty or out of calibration, it may cause the heater to turn off unexpectedly or allow water to reach unsafe temperatures. Replacing a worn or nonfunctional sensor restores reliability and helps your spa maintain the desired set temperature.

Maintenance and Replacement Guidelines

Over time, exposure to chemicals, heat, and moisture can degrade the sensor. Signs of failure may include inconsistent heating, temperature error codes, or unexpected shutdowns. Replacing the 72493 Watkins Temp Sensor Thermistor is straightforward and usually involves:

• Powering off the spa 
• Locating the sensor connection point in the heater or plumbing 
• Disconnecting the old sensor 
• Installing the new sensor and securing the wires 
• Restarting the system and checking temperature calibration 

This part is often replaced as part of routine maintenance or when troubleshooting heater or temperature-related spa issues.

Frequently Asked Questions – 72493 Watkins Temp Sensor Thermistor 3/8″

What does the 72493 Watkins Temp Sensor Thermistor do?

It monitors water temperature and sends signals to the control system to regulate the spa’s heating cycle.

How do I know if my temperature sensor needs replacement?

Common signs include fluctuating temperatures, inaccurate readings on the control panel, or error codes related to overheating or low temp.

Is the 72493 Temp Sensor compatible with all Watkins hot tubs?

It fits many Watkins-manufactured models, including Hot Spring and Tiger River spas. Always check your model’s manual or contact us for compatibility confirmation.

Where is the 72493 Temp Sensor installed?

It’s typically mounted in the heater housing or inserted into a sensor port or thermowell near the heating element.

Can I replace the Watkins Temp Sensor myself?

Yes. It’s a relatively simple replacement for most spa owners. Be sure to disconnect power before performing any work and follow your spa’s guidelines.

How often should the 72493 Watkins Temp Sensor be replaced?

While there’s no fixed timeline, sensors usually last several years. Replace it at the first sign of inaccuracy or failure to maintain consistent heating.

Shop the 72493 Watkins Temp Sensor Thermistor

Keep your spa safe and operating properly with a replacement 72493 Watkins Temp Sensor Thermistor 3/8″. We offer fast shipping and expert support to help you find the right parts for your spa. If you’re unsure about compatibility or installation, contact our team for assistance.