Thermistors
Thermistors are used in refrigeration units, air conditioners, and furnaces, and they are used to regulate and monitor temperature. These resistors sense temperature and react to changes by allowing less or more electricity to flow through them. Many thermistors are negative temperature coefficient (NTC). This means resistance decreases as the temperature increases....Read more
Thermistors play an important part in HVAC systems. They provide accurate temperature readings and can prevent short cycling and overheating by sending signals to control boards.
Faulty thermistors can present by the system failing to start, run without interruption or suddenly shut down. They can also cause inaccurate temperature readings. If resistance does not increase or decrease as expected with temperature, this could mean thermistors are not working properly. Error codes on the control boards or thermostats can also indicate there is a problem.
Checking thermistors should be included in the system preventative maintenance process. They should be examined for discoloration, cracks or deterioration. Wiring should also be looked at to ensure there are no loose connections or frays. A multimeter is a tool used to test resistance across the thermistor terminals.
LONG PartsPros stocks a wide range of thermistors, control boards, and temperature sensors used in commercial and industrial HVAC systems. We understand that system downtime is costly, and we understand the cost of downtime to building owners and facility managers. Orders placed online are processed quickly, and tracking numbers are sent via email as soon as the order ships. Our team is also here to help with questions.