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2015 Forester XT CVT
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77 Posts
Discussion Starter #1
A few days ago I was driving, after smacking a stealth pot hole I start to hear fun sound. When pulling to a stop my HVAC system made "actuating" noises of something Opening / Closing. Today I was fiddling with it and the noise is pretty hardcore when you direct air flow to the Windshield. Attached is the clips.

Clip 1 (Cycling Modes)

Clip 2 (Windshield + Outside Noise)

Anyone have an idea what broke this time. I swear this car is cursed :(
 

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2012 SH Manual Diesel
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511 Posts
That sound is the clutch of the AC compressor engaging, and the sound of the compressor operating.

It’s kicking in every time you select defrost, which is normal. It will also kick in by itself, depending on cabin temperature, because you have the climate control set to Auto.

The sound and operation seems normal. However, the sound maybe somewhat louder than normal (but could be the mic sensitivity of recording device), and a tad “groany”. So, it might be worth having an AC specialist take a look at it. If it has lost gas, and has air introduced air into the system, it can cause damage to the compressor. Has the system been cooling as per normal?
 

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2017 Forester XT
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285 Posts
That sound is the clutch of the AC compressor engaging, and the sound of the compressor operating.

It’s kicking in every time you select defrost, which is normal. It will also kick in by itself, depending on cabin temperature, because you have the climate control set to Auto.

The sound and operation seems normal. However, the sound maybe somewhat louder than normal (but could be the mic sensitivity of recording device), and a tad “groany”. So, it might be worth having an AC specialist take a look at it. If it has lost gas, and has air introduced air into the system, it can cause damage to the compressor. Has the system been cooling as per normal?
I can verify that low refrigerant will make a/c compressor operation noisier - this is what happened to my '17 when it had the common a/c condenser leak issue recall during summer 2020. When I say noisier, I mean when observed with your head under the open hood and the engine running. It wasn't noticeable when driving the car.
 

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Registered
2015 Forester XT CVT
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77 Posts
Discussion Starter #4 (Edited)
That sound is the clutch of the AC compressor engaging, and the sound of the compressor operating.

It’s kicking in every time you select defrost, which is normal. It will also kick in by itself, depending on cabin temperature, because you have the climate control set to Auto.

The sound and operation seems normal. However, the sound maybe somewhat louder than normal (but could be the mic sensitivity of recording device), and a tad “groany”. So, it might be worth having an AC specialist take a look at it. If it has lost gas, and has air introduced air into the system, it can cause damage to the compressor. Has the system been cooling as per normal?
Hmm. When selecting Defrost you can hear it the most, but as mentioned before when driving and not having the Defroster in use there will be noises coming from the HVAC system the noise is something being electronically opened and closed and or moved type of a noise. All started randomly when I hit a pothole.

EDIT: Since I forgot to mention, there was no noises prior to it, everything operated fine.
 

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2015 Forester XT CVT
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77 Posts
Discussion Starter #5
I can verify that low refrigerant will make a/c compressor operation noisier - this is what happened to my '17 when it had the common a/c condenser leak issue recall during summer 2020. When I say noisier, I mean when observed with your head under the open hood and the engine running. It wasn't noticeable when driving the car.
I did not have any recalls.
 
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