I have a new 2015 Subaru Outback. A day after I got it, I noticed a faint crackling noise coming from the air conditioning vent when the AC is set to high. It's very faint but it's very noticeable. Additionally, the the left vent in the center of the dash is blowing considerably less air than the right vent.
I took the car to my dealer and the service guy said the crackling was due to coolant cycling through the lines and that it was normal (apparently his brand new truck does it as well). Also, he said there was nothing he could see that could cause the left vent to be weaker than the right and there was nothing official from Subaru pertaining to this. He also said that the left and right vents in the center use the same duct which originates from the right of the car, so some weakness in the left vent is normal.
I checked with some other owners of the same model Outback but they don't have this issue.
Does anyone have any clue what could be causing this? My dealer is brushing everything off as it being "normal" but I'm trying to gather more info about possible issues before taking it back to them.