Question about Rheem 81VP6S/430126 Water Heater

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Rheem small 6 gallon water heater vibration/noise

I have a Rheem 81VP6S (Rheemglas Fury) 6 gallon water heater in the attic (attached to a Rinnai tankless water heater). Last night, I was in my living room and noticed a "low-frequency vibration" noise, and tracked it down to the attic, coming from the water heater. I unplugged it, and it stopped. My husband plugged it back in today, and it's vibrating again (not horribly loud, but annoying). What could this be?? Hot water seems to be working fine...

P.S. While on Christmas vacation, I forgot to pay my water bill, and they shut the water off at the street (was off about 24 hours); first noticed the sound last night after water had been off about 10 hours or so....after researching the internet, I thought it might be a burnt out heating element, but it's a small vibration, and hot water still working fine.

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If the water heater is working fine than I would not worry about the function of the water heater. What the problem may be is that some of your WATER LINES HAVE MOVED, AS THEY WERE NOT SECURED PROPERLY. The sound you may have heard was the Copper or PVC(Plastic) lines just getting back comfortable. I Suggest checking that your water lines are secured about every 3 or 4 feet with the proper ancjhor....Metal for metal pipe, copper for copper pipe, etc. Sometime as in my house, pipes are run through a hole drilled through a stud or a piece of wood, usually when hot water is run through this pipe. You can here an expansion of the water line interacting with the pipe expanding, if the hole in the wood was not drilled big enough......Experience of remodeling a very old house.......Joe

Posted on Jan 09, 2009

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Which one is compatable water heater to Rheemglas fury Model#41V50?


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42V50 would be the newer model number. They make tall and short models.
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Additional resources:
http://waterheatertimer.org/How-to-install-gas-water-heater.html

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Rheem glas fury water heater rattling


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We just installed a Rheem 50 gallon water heater. When you use any hot water a low pitched vibrations occurs that you can hear in the bathroom and bedroom. When the water heater completes the heating cycle...


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1 Answer

We just installed a Rheem 50 gallon water heater. When you use any hot water, a low pitched vibrations occurs that you can hear in the bathroom and bedroom. When the water heater completes the heating...


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