Air Conditioning - Central Air Makes Whistling Noise

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lostchick
08-06-08, 12:02 PM
Help! My central air makes a loud annoying squeeky sound when its on. Its usually louder when it first turns on and it gets softer the longer time its on. The noise is clearly coming from the unit itself and NOT from any of the vents. I think it's coming from between the fan and the furnace but can't be sure. Any ideas?

Codyy
08-06-08, 09:48 PM
I would check the blower wheel in the furnace (with the unit safely POWERED DOWN).