Q: My heater makes a really loud noise when its on.

asked by on

I cleaned out the blower motor and I replaced it after it was still making noise wondering if it could be low on refridgerant.

My car has 246058 miles.
My car has an automatic transmission.

The level of refrigerant in the air conditioning system would not affect the noise level of the blower motor. If you replaced the motor with an aftermarket (non OEM) motor that could create an issue in terms of the quality of the motor and noise level. Check the motor mounts, and the blower wheel. To gauge whether the noise is motor related, mount related, or wheel related, you can try running the motor alone in free air. If the noise is from the blower wheel, unless there is an obvious defect you are more or less stuck with it unless you want to buy another OEM wheel to see if that makes a difference. If the noise originates in the motor, obviously return the motor to the vendor for refund. If you desire that this problem be diagnosed by a certified Mechanic, dispatched by YourMechanic right to your location, please request a blower noise diagnostic and the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My heater makes a really loud noise when its on.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: battery light is on, but car is running fine

The red battery light on a car is there to indicate to the driver that the battery is not charging. This light normally comes on when the alternator is no longer functioning. I would recommend having the alternator output tested...

Q: Heater blower

If the blower motor does not respond to on and off commands at the switch, generally the switch is faulty. The turn signal issue is probably not related to the problem with the blower. If you hear the flashing unit...

Q: Grinding noise front right brake. Sometimes can hear metal noise when wheel spins afterwards.

Hi there. The vehicle sitting only week, should not have caused a grinding noise from the right front wheel upon brake apply. I would assume, the right front brake pads are touching metal to metal. Continued driving will cause the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.