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    pfc107 Posts: 1, Reputation: 1
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    Feb 25, 2012, 10:05 AM
    Squirrel cage noise
    There was a slight rattle coming from my furnace fan. I opened up the intake grate, saw some screws gilding the fan to the bottom of the cage, and proceeded to tighten them. Now there is a new noise that sounds like some is off kilter or out of alignment - like a low far off helicopter noise. I then tried to untighten the screws a little since I essentially caused the issue by tinkering with it so I figured I could go back to where I started. Any suggestions?

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