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Old 04-10-2024, 12:42 PM   #1
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Noisy water pump

I just put water in my new to me 2003 27BH. The fresh water pump is SO noisy (hard to have a conversation over it) and it vibrates the counter, the pump is under the sink/oven area.

My parents had a camper while I was a growing up and their pump was never this bad. Are the pumps from this era of campers just painfully loud and unpleasant to run? Is it worth replacing the pump in hopes of winding up with something less obnoxious?
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Old 04-10-2024, 12:57 PM   #2
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Usually it’s not the pump, but the hoses connected to it and the surrounding piping. If you can access the pump have a look see. Also, the pump should have rubber grommets or some kind of isolation between the pump and the floor… or whatever its mounted too.

I used a lot of the foam pipe insulation around mine wherever it rubbed on anything that would transmit noise.
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Old 04-10-2024, 01:02 PM   #3
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Good to know, I'll check that out, the pump is easily accessible.
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Old 04-10-2024, 01:11 PM   #4
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I also added a water pump silencing kit that made a huge difference.

https://www.amazon.com/94-591-01-Sil...zcF9hdGY&psc=1
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Old 04-10-2024, 01:56 PM   #5
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Good to know, I'll check that out, the pump is easily accessible.
If it's screwed down too tight that can be another issue, something else to check.
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Old 04-10-2024, 03:56 PM   #6
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If the pump is original to the unit, a new one would not be a bad consideration to consider if quieting by isolating hoses does not work. They are easy and inexpensive.
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Old 04-10-2024, 06:23 PM   #7
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Also, I added an accumulator that reduced the cycles.

SEAFLO Pre-Pressurized Accumulator Tank https://a.co/d/iPFejqm

I also mounted mine on an old mouse pad to further isolate it.
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Old 04-11-2024, 04:13 AM   #8
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X2 on the foam pipe insulation. We had plumbing laying up against an inside wall and on the floor that made an annoying racket. Some insulation pieces took care of it. Silent, no, but not loud like it was.
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Old 04-15-2024, 08:00 PM   #9
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isolate the pump

We had an '06 27BH and the lines were rigid and the pump was so loud we had to turn it off at night. I found a forum that suggested disconnecting the pump outlet and adding a loop of tubing (like what is used to connect a faucet) to separate the pump from the plumbing. It cut the noise 80% and a couple pieces of pipe insulation where the lines contacted something cut another 10% or so.
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Old 04-15-2024, 08:05 PM   #10
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Interesting, I tried holding the pump and plumbing in different places while it ran and that didn't seem to do much. I don't think anything looks obviously wrong.
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20240410_192726.jpg   20240410_192928.jpg  
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Old 04-15-2024, 08:33 PM   #11
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It looks like your pump is a 2088 series Shurflo. We had one in a "96 Fleetwood 33-footer, and it was inherently loud. The water tank and pump were mounted on top of carpet under the bed at the rear of the TT. At the kitchen in the front, it was very noticeable. A late-night trip to the toilet with the DW in bed would wake her up with a start every time. Never good.

The newer 4008 series Revolution pumps are quieter. Not silent, just better when mounted right.
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Old 04-16-2024, 07:28 AM   #12
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Is the short white piece of tubing on the left soft? It is the spot I replaced with the loop to decouple the pump from the plumbing.
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Old 04-16-2024, 07:32 AM   #13
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All the plumbing there is PEX, so it's stiffer than a rubber line but it's not PVC either.
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Old 04-20-2024, 08:06 AM   #14
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My pump was only held down with 1screw. I installed the other 3 screws made a huge difference
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Old 04-21-2024, 12:54 PM   #15
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This video shows several solutions along with audio and a sound meter to show the before and after improvement.

https://youtu.be/AC0-cHu-4Jc?si=s0_9zWx6oxv-vfOX
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Old 04-23-2024, 09:19 AM   #16
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Quote:
Originally Posted by slowTA View Post
I just put water in my new to me 2003 27BH. The fresh water pump is SO noisy (hard to have a conversation over it) and it vibrates the counter, the pump is under the sink/oven area.

My parents had a camper while I was a growing up and their pump was never this bad. Are the pumps from this era of campers just painfully loud and unpleasant to run? Is it worth replacing the pump in hopes of winding up with something less obnoxious?
I suggest you check to make sure you have no air in any of the lines. Make sure you open EVERY faucet including the outside and even low point drains. IF you have a clothes washer, make sure you run it briefly on warm to be sure all air is out of both the hot and cold lines. The pump should shut off within a second of shutting off a faucet.
Hope that helps.
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Old 04-23-2024, 02:33 PM   #17
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If I am reading those photos right, your pump is mounted on a piece of chipboard that is attached to a box with some sort of void. In other words, they have made it into a resonator/loudspeaker. I would probably get an isolation kit but also mount the pump to the floor instead to the side of a resonant box.
Also surprised that I don't see a strainer on the inlet side. If it has gotten louder over time there could be some debris inside the pump in the impeller.
Kind of wondering if the pump has already been replaced - is there a date on it? If the inlet and outlet sides were reversed it would mount easily on floor, perhaps a replacement with the ports on the opposite sides? It doesn't really look like a 21 year old pump to me (compare the dirt under to the dirt on the pump) which began my musing that it is a poorly thought out replacement.
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Old 04-24-2024, 06:29 AM   #18
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Quote:
Originally Posted by Tuckerbug View Post
I suggest you check to make sure you have no air in any of the lines. Make sure you open EVERY faucet including the outside and even low point drains. IF you have a clothes washer, make sure you run it briefly on warm to be sure all air is out of both the hot and cold lines. The pump should shut off within a second of shutting off a faucet.
Hope that helps.
I agree 100%. The first time we used our camper the pump sound was extremely obnoxious. We actually went out several times and my wife kept complaining about the pump noise. One day I walked by the outside shower hatch cover and thought I'd open it up and take a peek. I ran the hot and cold for a couple seconds and after that our pump noise was gone. I mean night and day difference.
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