I’m looking for a quieter replacement for my Dayton centrifugal pump. The requirements are as follows: 230v. Quiet. 1” input and output (could adapt this if needed). Enough flow for the 5 AC units I have aboard. Current pump is 60gpm but is overkill. I’ve used March pumps in the past on smaller boats and they were whisper quiet. I don’t see one to meet the specs above though. Ideas? Suggestions?
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07-14-2018 12:11 AM #1Senior Member
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- Apr 2014
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Quietest hi flow pump for Air Conditioning
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07-14-2018 07:33 AM #2
Re: Quietest hi flow pump for Air Conditioning
I have 5 A/C and utilize 2 March Pumps. Three units one one pump and two on the other. Nice to have redundancy in case something happens while remote in the islands. March pumps are VERY quiet.
Best regards,
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David
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07-14-2018 09:38 AM #3
Re: Quietest hi flow pump for Air Conditioning
I found our Oberdorfer 104 to be quiet enough. My advice would be to call Depco pump and ask their advice. They know their stuff and carry about every pump known to man.
George
Former Owner: "Incentive" 1981 56MY
2007-2014
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07-14-2018 10:48 AM #4
Re: Quietest hi flow pump for Air Conditioning
I have a Koolair pump as my watermaker feed pump. It’s designed primarily as a marine aircon pump. Continuous rated and super quiet. Super easy to replace pump parts.
One model is both 240/120 and 50/60Hz. Choose the sealed model. Not expensive.
www.koolairpump.com Very impressed.Last edited by scottinsydney; 07-14-2018 at 11:27 AM.
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07-15-2018 01:24 PM #5Senior Member
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- Apr 2014
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- 296
Re: Quietest hi flow pump for Air Conditioning
Wow those koolair pumps look just like match pumps but are way better priced. I wish they had one with a larger output fitting but for $220 I think it’s worth a try. Thanks.
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07-16-2018 03:04 PM #6Senior Member
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- Jul 2007
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Re: Quietest hi flow pump for Air Conditioning
FWIW, Joe at Depco said today that they have sold several March pumps as replacements for the knock-off Coolaires....
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07-17-2018 02:32 AM #7Senior Member
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- Apr 2014
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Re: Quietest hi flow pump for Air Conditioning
Well it will be an interesting experiment. The koolair I purchased was the $320 epoxy encapsulated version. The flow will be less than the existing centrifugal pump. The pumps are cheap and you can replace just the head if needed. Looks like a good product.
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Re: Quietest hi flow pump for Air Conditioning
We have a couple of Scot Pump 78s in the boat I run, one for sea water and one for chiller circulation. Pretty quiet and seem to be well built. They come in smaller sizes
http://www.depcopump.com/catalogs/cu...111/Page-7.pdfPascal
Miami, FL
1970 53 MY #325 Cummins 6CTAs
2014 26' gaff rigged sloop
2007 Sandbarhopper 13
12' Westphal Cat boat
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07-24-2018 01:01 AM #9Senior Member
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- Apr 2014
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Re: Quietest hi flow pump for Air Conditioning
Just an update. I installed the 230v 1000gph Koolair pump last week, and ran it nonstop on a tuna trip from Friday-Sunday. This pump is incredibly quiet. You can barely hear it is on when standing next to it. I'm very pleased with the purchase. The only complaint I have about it is the threaded 1/2" output tube that sticks up. To me it seems a little small, and also a little flimsy. If your hose connection is anything other than a straight line, you need to make sure there is no pressure torquing that fitting since the pump must be mounted below the water line to prime.
Overall, I think it's a win.
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07-24-2018 07:39 AM #10
Re: Quietest hi flow pump for Air Conditioning
For my above the waterline watermaker application with 3/4" hoses, I installed a Jabsco 3/4" one way valve before the Koolair pump. The combination of the above waterline pump and one way valve works flawlessly.