The Whirlpool 37001139 Dryer Thermostat is a safety component that controls the temperature inside your Whirlpool clothes dryer. It functions as a switch, automatically turning off the heating element once the desired temperature is attained. By doing this, you keep your clothing from overheating and maybe shrinking or breaking. The thermostat, which is a component of the dryer's internal mechanism, continuously monitors the temperature of the heating element. When the appropriate temperature has been achieved, the thermostat turns off the element, preventing it from producing any more heat. When the dryer's internal temperature starts to to drop, the thermostat detects the change and reactivates the heating element to keep the optimum drying temperature. This guarantees that 37001139 there is no chance of heat damage as your clothing will dry quickly.