About Used Heater Blower Motors
The heater motor, or blower motor, is the fan that pushes air through your vents for both heat and air conditioning. When it fails you get no airflow, and a used motor is a quick, inexpensive fix.
What a Heater Blower Motor Does
The heater motor, more commonly called the blower motor, is the electric fan that moves air through the HVAC system and out your vents. It supplies the airflow for heating, air conditioning, and defrosting, running at the speed your climate control sets.
Signs Your Heater Blower Motor Is Failing
- No air from the vents on any speed when the motor has failed
- A whining, grinding, or rumbling noise from worn motor bearings
- Weak airflow, or a motor that runs intermittently
- Debris or a foreign object caught in the fan making noise
What to Check When Buying a Used Heater Blower Motor
- Spin the fan by hand to feel for smooth, quiet bearings
- Apply power to test the motor if you can
- Check the fan wheel for cracks or missing pieces
- Match the exact motor and fan for your vehicle
Common Applications
Every vehicle with heating and air conditioning has a blower motor. The motor bearings wear and get noisy over time, and the motor can eventually burn out, both common reasons for replacement.
Related Parts
Frequently Asked Questions
What does the heater or blower motor do?
It is the fan that pushes air through the HVAC system and out the vents. It provides the airflow for heat, air conditioning, and defrost, at the speed your climate control selects.
Why do I have no air from my vents?
A failed blower motor is a common cause. If no air comes out on any speed, the motor has likely quit. If air comes out only on certain speeds, that usually points to the blower resistor rather than the motor itself.
How do I check a used blower motor?
Spin the fan by hand to feel for smooth, quiet bearings, apply power to confirm it runs, and check the fan wheel for cracks or missing blades. A quiet, freely spinning motor is a good buy.
Are blower motors interchangeable?
Only the correct motor and fan for your vehicle will fit and move the right airflow. Mounting, connector, and fan design are specific, so match it to your application.
