[Shepan]

I've been hearing a moaning sort of noise from the front, passenger side of the car whenever I turn on or off my A/C - The car is in for servicing (right now) and they are saying it's a normal sound...Not "normal" if it just started (in my opinion) -

Has anyone else had this experience with the A/C?

 

[Hep]

Is the "being turned on" moan diferent than the"turned off" moan? I'm betting it is. It usually is.

My car doesn't moan. My refrigerator does at times. That's all I'm willing to admit. :wink:

 

[KTPhil]

It could be a damper door opening/closing, either a vent or the recirc. The "off" position may be different than your last setting, causing it to moan if the mechanism is sticky. You might see the motion of the door or linkage if you remove the glove boxes.

 

[Tideland Prius]

With the car on (and in EV mode), standing next to the car, the A/C is rather noisy.

If you're talking about the sound you hear from inside, it may be the recirc flap. Don't forget that your cabin air filter is behind the glovebox so air does pass through on the passenger side.

 

[DanMan32]

I usually hear a faint whisle as the refrigerant settles, but I think I have heard it moan also.