Pump sizing

Pool pumps, pool filters and the plumbing of
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wendellburton

Pump sizing

Postby wendellburton » Wed 01 Aug, 2012 07:51

I need a new pump. Looking for an energy efficient and quiet one. I don't want to over size it. My pool is inground, 20x40, 2 jets, top and bottom skimmers, 1.5" pvc pipe, hayward 244s filter. No additional stuff like spas or waterfalls. Pretty basic.


CGPoolman
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Pump sizing

Postby CGPoolman » Wed 01 Aug, 2012 08:21

Wendell,

You could probably get by with a good 1HP, I would suggest going up to a 1.5HP tho to be on the safe side. Hayward has the Super II pump which would cost 375-400 bucks if you shop around. Pentair and Sta Rite also make pretty good pumps but will probably run a few dollars more.

CG
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Pump sizing

Postby Guest » Wed 01 Aug, 2012 09:09

how about jandy?
also, how about finding parts for jandy, pentair and sta-rite other than online?
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mas985
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Pump sizing

Postby mas985 » Wed 01 Aug, 2012 10:13

With that size filter, you will want to keep flow rates below 60 GPM for optimal filtering but you really shouldn't need much more than that either. I would go with one of the smallest two speeds on the market and here are a couple of choices depending on the voltage setup of your current pump:

Pentair Superflo SF-N2-3/4A - 3/4 URHP @ 115v
Pentair Superflo SF-N2-1A - 1 URHP @ 230v
Hayward Superpump SP2607X102S - 1 URHP @ 230v

Anything larger is going to be a waste of energy.
Mark
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18'x36' 20k gallon plaster/gunite pool, 1/2 HP 2sp pump, Aqualogic PS8 SWCG, 420 sq-ft Cartridge Filter, Solar Panels, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater
wendellburton

Pump sizing

Postby wendellburton » Wed 01 Aug, 2012 14:34

I'll look into these. Thanks
Barolac14
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Pump sizing

Postby Barolac14 » Wed 17 Oct, 2012 05:21

CGPoolman wrote:Wendell,

You could probably get by with a good 1HP, I would suggest going up to a 1.5HP tho to be on the safe side. Hayward has the Super II pump which would cost 375-400 bucks if you shop around. Pentair and Sta Rite also make pretty good pumps but will probably run a few dollars more.

CG


I agree with, i thought this is the only solution of that problem.
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Pump sizing

Postby czechmate » Fri 19 Oct, 2012 17:44

Mark is right.
Bigger pump is not always better. It is not like bigger motor on your truck. There is no transmission to adjust to demand. On the contrary, it is designed to move designated amount of water thru certain size of pipe and given obstacle which is a filter.
It is not like a sump pump that will throw water thru 15 ft of 2" PVC into an alley.
Under ideal condition (clean filter), it will draw given current and KWH you can calculate. As the filter creates higher backpressure due to trapped debris resistance, the demand on the motor with incremental RPM slowdown will increase power consumption and may even cause overheating and failure if grossly unmatched with piping and size of filter.
The only manual transmission here is you and a correct match!
Michel15
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Pump sizing

Postby Michel15 » Tue 30 Oct, 2012 11:28

There is no transmission to adjust to demand. On the contrary, it is designed to move designated amount of water thrust certain size of pipe and given obstacle which is a filter.

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