Genuine Tumble Dryer Thermostat The thermostat in your tumble dryer is designed to control temperature. This quality replacement tracks and regulates the dryers heater temperature and if the dryer is not producing sufficient heat or if it is producing too much heat, the thermostat may br faulty. Any obstruction to the rate of airflow will affect the operation of your dryer and will almost certainly cause a failure of the thermostat. If your dryer won’t heat you will waste a lot of energy running the dryer for hours and your clothes will not get dry. Use this replacement thermostat to ensure that the dryer produces the appropriate amount of heat for a drying cycle. Please check model fit list to ensure this part is correct for your model.