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Thread: New Build - Choosing a Pump and Piping Question

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    New Build - Choosing a Pump and Piping Question

    Hi everyone – we are looking to build our first pool. It’s 20x40 and 7’ deep. We have a PB we like who has been building pools for 35 years, one at time, and is not big on up-selling believe it or not. His normal pool install is a Hayward single speed pump with 1.5” piping. Our power rates are low, ~$0.08/kWH, and I’m interested in what I read about the 2 speed and variable speed pumps (EcoStar) as well as 2” piping. This is all new to us…would love some feedback on recommendations for single/2/variable speed by Hayward and piping. Thanks!

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    bobodaclown's Avatar
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    Re: New Build - Choosing a Pump and Piping Question

    Welcome to the boards.

    Larger pipe less flow restriction. 2-Speed saves money over a single speed when run on low. The variable speeds have a large jump in price and with low electrical cost you don't recoup the price difference in savings.

    If the price difference between the 1.5 and 2 is minimal I'd go with the 2 inch.

    What size pump is he looking to install? If you don't have any water features you can get away with 1/2 HP or 3/4HP for even more savings.

    Lots of good info in Pool School: http://www.troublefreepool.com/content/
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: New Build - Choosing a Pump and Piping Question

    Thank you. I had read the high level pump info in Pool School under Equipment, but now I see the detailed pump information under the Construction tab, "Pump Basics" which is helpful.

    The pump is only for the pool, there is a separate one for the water feature. He had spec'd a 1.5 Hp single speed, but did echo what you said above about a 1/2-3/4 HP.

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    bobodaclown's Avatar
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    Re: New Build - Choosing a Pump and Piping Question

    Hello sky2,
    When selecting a pool pump it's one of those things that bigger isn't better. Just the opposite of a pool filter (bigger is usually better).
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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