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Old 12-16-2010, 11:09 PM   #1
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Clanking Rheem Furnace


Just moved into a house with a Rheem furnace. It was cleared by a private inspector and the local gas company. It makes an intermittant clanking sound when it's on. Seems to go off when the flame goes out and the blower is just on. The clank is pretty anoying. Is this normal for a Rheem?

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Old 12-17-2010, 02:50 AM   #2
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Clanking Rheem Furnace


Look at the blower wheel (best to pull the entire housing so you see all the way is blower wheel) there may be a piece of paper or other material striking the wheel.

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Old 12-17-2010, 06:36 AM   #3
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Clanking Rheem Furnace


Also, motor bearings need oil each season. Had a furnace blower wheel on shaft years back and boy, did it makes noise from lack of maintenance.
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Old 12-17-2010, 07:01 AM   #4
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Clanking Rheem Furnace


"...motor bearings need oil each season..."
I think most motors have sealed bearings in recent times but can't hurt to look for an oiling port.
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Old 12-17-2010, 12:33 PM   #5
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Clanking Rheem Furnace


Very correct. Motor of today are non-oilable.

Because of the intermittently nature of the noise I would think it more likely to be something stuck in the blower wheel like paper or some such.

The only other thing might be the blower wheel collar is loose or some of the blower vanes are coming loose.
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