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Old 04-18-2016, 12:54 PM   #1
1 Rivet Member
2014 28' International
undisclosed , Idaho
Join Date: Dec 2015
Posts: 14
Water pump noise

Any tips on why my water pump is making so much noise? Is it because my fresh water tank is only 7/8ths full?

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Old 04-18-2016, 01:14 PM   #2
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2008 25' Classic
Nixa , Missouri
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Was this noticeable after dewinterizing? How did you winterize? Did you blow out with air or use antifreeze?

Are you getting normal water flow out of faucets.

Check to see if pump mounting screws are tight.

Check to see if PEX pipes aren't vibrating against each other. I use pipe insulation on pipes that are next to each other.


2008 Classic 25fb "Silver Mistress"
2015 Ram 2500 6.7L Cummins. Crew Cab, 4x4, Silver
2010 Tundra 5.7L, Double Cab, 2wd, White
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Old 04-18-2016, 01:18 PM   #3
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2014 20' Flying Cloud
Long Island , New York
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Welcome to the forum! There are plenty of earlier threads on this, for instance:

Airstream pumps are noisy -- some more than others. Pump noise is unrelated to water tank level (unless empty). Be sure to open a faucet when you turn the pump on, in order to let air out of the lines and have the pump get full suction on water only.
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Old 04-18-2016, 02:13 PM   #4
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2001 30' Excella
Somerset , New Jersey
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Just how much noise is TOO much from the water pump ????? Mine makes a sort of vibrating humming noise. Loud enough to notice but hardly what I call bothersome. So do some pumps make enough noise to be annoying or are some silent ??? Personally I want to hear something from the pump so I know it's still there and helps remind me to turn it off before we hit the road. I have had 2 pumps. Both Surflo. I replaced the original when it failed to prime with one matched to it. Now the second started feeding water through the check valve back into the tank ( to overflow) and I changed it to the original pump that I have put a re-build kit in. So now I need to overhaul the second one for my spare. BUT, both make the same sounds.

That's my story.
Roger in NJ

" Democracy is the worst form of government. Except for all the rest"
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Old 04-18-2016, 02:15 PM   #5
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Blacksburg , Virginia
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Posts: 181

I agree with KJ Ritchie using the pipe insulation. I kind of take it to extreme with the foam pipe insulation. I added it where ever I can reach a Pex line. Keeps them from vibrating against the wall and anything else.
On our 28 international the water pump is right under the fridge in the kitchen, you hear it good.
I bought those extension hoses to connect to the pump and run them circular around several times around the pump in the insulation. Supposedly those lines in a curve reduce the hammering by smoothing out Turbidity.
( or so they say) Seems to have worked pretty good.

I also put some neoprene shock bushings on all four corners, that I had out in the shed, on the pump legs between it and the floor. So it was one or the other that reduced the noise. I have one of those pressure tanks with a diaphragm to add it, if it becomes annoying again.

I have this other idea. I have a Box that has foam insulation in it. I thought about placing it over the Pump. Kind of a sound Isolation thing.
I will have to move the forced air hose. already moved some wires and added length and rerouted. It is somewhat less cluttered in there, or at least a organized Rats nest. Vacuumed out all the sawdust.

Try the foam insulation on the pex lines first. Change only one thing at a time and see how it is. I did the shotgun approach but now I don't know which one worked, LOL
Have a good one.
Ra, Chelle & Natasha
For my next trick, I will use my new Airstream & Dodge Ram 2500 CTD to make this pile of money disappear.
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Old 04-18-2016, 03:35 PM   #6
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1995 25' Excella
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Mine is mounted on carpet. A slight hum is all that is noticeable
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Old 04-19-2016, 10:57 AM   #7
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1986 25' Sovereign
Ballston Spa , New York
Join Date: Nov 2015
Posts: 7
Hi Kelvin,
This is my first Airstream, so was wondering if you could assist with a related question please? When I turn my water pump on the bath sink and shower have good pressure and pump runs consistently. Kitchen sink however has little flow and the pump "stutters" while that one is open. Any thoughts for adjustments or troubleshooting?
Thank you!
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Old 04-19-2016, 11:31 AM   #8
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Nixa , Missouri
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Does the kitchen faucet run OK when on city water hook up?

Is there an aerator in the faucet neck? It could be restricted. Does your faucet have separate hot and cold taps or is it a mixer faucet?

Does the faucet run slow on cold or hot only?

Is there a water filter inline with the faucet? It could be restricted.

If you disconnect the cold line from the faucet, put the end in a bucket and turn on the water pump does it flow better? That would isolated the faucet. If the water runs good then the faucet is the culprit. If the water still runs slow then the issue is downstream in the pipe.


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2015 Ram 2500 6.7L Cummins. Crew Cab, 4x4, Silver
2010 Tundra 5.7L, Double Cab, 2wd, White
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