Gas Training - Testing a NTC Thermistor in a Boiler TikTok Plumber

Testing a thermistor in a gas boiler might sound like a tricky business, but trust me, it’s not as daunting as it seems. As plumbers, we often come face to face with problems that stem from these little temperature sensors, and knowing how to test them can save us a lot of time and hassle on the job. A thermistor is a type of resistor whose resistance varies with temperature. In gas boilers, it plays a crucial role by monitoring the water temperature and relaying that information to the boiler’s control system. If the thermistor malfunctions, it can lead to heating issues or even boiler lockouts, which is the last thing any homeowner wants. In the video above, I break down the step-by-step process of testing an NTC thermistor—it's super straightforward and essential knowledge for anyone in the plumbing and heating game. Whether you’re a professional plumber or a DIY enthusiast looking to tackle your own boiler issues, understanding how to test a thermistor will put you steps ahead. You’ll get to see the tools I use, along with some handy tips and tricks to make sure your tests are accurate. So grab your multimeter and let’s get to it! Watching and learning is the best way to improve your skills, and this video is a solid resource for both new and seasoned plumbers alike. Remember, whether it’s for a client or a personal project, keeping your boiler in great shape ensures a warm home and happy folks. Happy plumbing!