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Old 31-01-2016, 09:43   #16
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Re: Marine a/c water pump

Originally Posted by wesevans View Post
With A/C other things being equal bigger is better. The bigger pump will have higher pressure if the hose diameter is the same.
I disagree.

Higher than design flow rates can contribute to higher initial cost, higher energy consumption, higher operating cost, unnecessary noise, and excessive component erosion.

As is almost always the case, the system designer set design specifications and selected components for a reason.

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Old 01-03-2016, 17:39   #17
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Re: Marine a/c water pump

For my 16k Btu A/C 500 gph is recommended and that's what I have used for the past 15 years or so. When you are on shore power, like you would most likely be if you need A/C, the cost of the additional electricity is a mute point.


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Old 01-03-2016, 22:36   #18
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Re: Marine a/c water pump

300h for that unit is fine. And yes, you should not oversize your pump.

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