At National Boiler Spares, whether you’re replacing a worn thermistor or upgrading your system, our selection of high-quality thermistors guarantees reliability and optimal operation.
Boiler thermistors are essential components in any heating system, responsible for monitoring and regulating temperature to ensure safe and efficient operation. These sensors work alongside other system parts to provide accurate temperature readings, prevent overheating, and maintain consistent heating performance.Â
Worn or malfunctioning thermistors can cause significant issues and inefficiencies in your heating system. Common causes for thermistors to fail are:Â
- Prolonged exposure to extreme temperatures
- Physical damage or corrosion
- Electrical surges or short circuits
Promptly replacing faulty thermistors is crucial to ensure the safety, efficiency, and longevity of your boiler system.
Buy Thermistors OnlineÂ
National Boiler Spares stock a wide range of boiler gas valves for many brands and manufacturers including Baxi, Worcester, Vaillant, Ideal, Glowworm and more. Try using our search bar above to find your specific boiler thermistor by parts or GC number with ease.
Why choose National Boiler Spares?Â
Here at National Boiler Spares, we are a trusted source of high-quality boiler spare parts and heating components to customers throughout the UK and beyond. Our comprehensive range of new brand genuine parts covers the latest and older model boilers, all available at the best possible prices online or over our trade counter. We work closely with our suppliers to ensure that we always have the latest and most innovative products available, and we are constantly expanding our boiler spares and parts range to meet the evolving needs of the industry.Â
Thermistor – FAQS:Â
What is a thermistor, and what do they do in a boiler?
A boiler thermistor is a type of resistor whose resistance changes particularly with temperature. It’s typically used in temperature measurement and control. Thermostats in boilers monitor and regulate water temperature, helping to ensure the system heats efficiently and maintains safe operating conditions.
What are the boiler thermistor failure symptoms?
Boiler thermistor failure symptoms include inconsistent water temperature, boiler error codes, or the system failing to heat properly.
How often should a thermistor be replaced?
Boiler thermistors don’t usually have a set replacement schedule. They’re typically a durable part as their lifespan depends on factors like usage, environment, and maintenance. You should replace your boiler’s thermistor if any signs of failure show. Routine boiler servicing by a professional can help identify thermistor issues early, ensuring safe and efficient boiler operation.
How do I test if a thermistor is working?
To test if your thermistor is working properly, you can use a multimeter to measure the resistance. Compare the reading to the manufacturer’s specifications at a known temperature to confirm if it’s functioning correctly. If the resistance doesn’t change as expected or is out of range, the thermistor is faulty.
Why is my thermistor reading incorrect temperatures?
Your thermistor may be reading incorrect temperatures for a few reasons, such as:Â
- A damaged or corroded thermistor
- Loose or faulty wiring
- Calibration issues or incompatible thermistor specifications
