Good point as the OP never revealed how old their Forester is, etc. .....but coming from a new owner of a 2020, the fan is really loud on recirc at the highest settings. More than my wife's old '08 that this replaced and certainly more than my own car and those before it. I was a little surprised to be honest but the good news is that it is also effective so any time spent at those settings is fleeting until the cabin cools.Have you inspected your cabin air filter? Check for any debris, as this may indicate that something (e.g. a leaf), has fallen down into the blower. This can sometimes make the fan sound louder.
this made me think just a bit too... given that the 2020 models (and 2019) also have rear seat vents in the console back side, and not just the under-seat vents for heat, this could cause the blower motor to need to be a higher volume fan to get air flow out of those extra vents. And if you use the bi-lev (dash and floor), that's even more air to force out through those - what - 10 vents?Good point as the OP never revealed how old their Forester is, etc. .....but coming from a new owner of a 2020, the fan is really loud on recirc at the highest settings. More than my wife's old '08 that this replaced and certainly more than my own car and those before it. I was a little surprised to be honest but the good news is that it is also effective so any time spent at those settings is fleeting until the cabin cools.
....and since we garage our vehicles, it means the instances we have to turn it up that high are even less frequent.
It's really just the highest setting(s) on recirculation / max that I've experienced this. It's not what I would consider absolutely horrible and like I said, the A/C is certainly adequate. Even on the hot days we've had here, you don't have to keep it that high unless you're evacuating hot air from the car IMO/IME.I don't care if mine turns out to be loud. I'll just be happy to have heat on my feet and better AC.![]()