The heater fan motor, also known as the blower motor, pushes air through the vents for heating, cooling, and defrosting. If it fails, your car’s heating and air conditioning system will not function properly, reducing comfort and visibility. Replacing a faulty heater fan motor restores proper airflow inside the cabin.

What is a heater fan motor replacement?

This service involves removing the old or faulty blower motor and installing a new one. The mechanic will also check the fan resistor, wiring, and control switches to ensure the system works correctly.

Why do you need a heater fan motor replacement?

A working fan motor is essential for heating, cooling, and clearing fog from your windows. Without it, your cabin comfort and visibility are compromised, making driving less safe and enjoyable.

Common signs you need a heater fan motor replacement

• No air coming from the vents when the fan is on
• Weak airflow even at the highest fan setting
• Unusual noises such as squealing or grinding from the vents
• Fan works only on certain speeds
• Burning smell when the fan is operating

What happens during a heater fan motor replacement?

A mechanic will:

1. Inspect the fan motor, resistor, and wiring
2. Remove the faulty blower motor (usually located under the dashboard or in the engine bay)
3. Install a new heater fan motor
4. Reconnect wiring and test the electrical system
5. Check airflow at all speed settings
6. Ensure the heater and air conditioning system work properly

How much does a heater fan motor replacement cost?

Heater fan motor replacement typically costs $300–$700. If the fan resistor or additional HVAC components need replacing, costs may increase to $800–$1,200+.

Is it unsafe to drive with a faulty heater fan motor?

While not immediately unsafe, a failed fan motor reduces your ability to defrost the windscreen, which can impair visibility in cold or wet conditions. It should be repaired to maintain safety and comfort.