I was investigating why is one of the air vents so loud when AC is running. Turned out the air duct is not actually behind the vent, but to the side of it.
This is looking from the vent towards the duct: https://imgur.com/LoVmJLB
Video for better context: https://imgur.com/a/xije77u
Is this a common thing? The casing for the grille (left of the picture, the white thing) is restricting air flow a bit and making the whole vent kinda loud.
I am thinking to get a dremel and just cut off the extra casing that’s serving no purpose
Edit: mixed up return vs supply. This is a supply vent.
Is this a supply duct or return duct? I know you’re calling it return, but I wouldn’t expect air to be flowing through a return duct with enough force to make any sort of noise… The duct itself looks small for return air as well
Oh jesus, I mixed up return vs supply! This is a supply duct.