A heater blower resistor is a part of a car’s heating and air flow system that regulates the velocity of the blower motor. It’s sometimes situated within the passenger compartment, behind the dashboard. When the heater or air con is turned on, the resistor reduces the voltage to the blower motor, permitting it to function at a decrease velocity.
Heater blower resistors can fail over time, inflicting the blower motor to function at a better velocity than regular. This will result in elevated noise and put on on the blower motor, and may also scale back the effectivity of the heating and cooling system.
