nick01

why is my A/C making a whistling noise? its at all speeds and i know its the A/C because when i turn it off it goes away.

Brian231

Often times, debris becomes lodged in a vent like possibly a cigarette pack wrapper etc. This contributes to a/c or vent noise. If the noise does not persist when simply the vent is on, you may have a bad clutch assembly on the compressor.

donaldp

Check to see that all vents are open. Often times, if someone closes one vent, more air is forced through the open vents, thereby causing some noise.

passnu2

iTrader: (33)

haha...just whistle back at it

nn432100

Change the filter maybe? My old bosses denali was doing the same thing and we changed out the filter cause it was crazy clogged. whistle went right away.