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Thread: Pool Solar Panels

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    Pool Solar Panels

    I have an above ground pool and it is 18 round by 52 high and I have 2 solar heat panels that TOTAL 2 feet by 20 feet. I was told that was enough to heat my pool. Is it enough and how long should it be in the sun each day to work like it should work? Also, I have it hooked up to a divert er so I can shut the solar panels off and just let the water run from the filter to the pool. My other question is if I let my solar panels run even when no sun is out or it is raining will it make my pool colder? Thanks for any help.

    18ftx35ft, 25,500 Gallons Gunite Free Form 2.0 HP pump Mineral Springs T-15 SWCG w/ Mineral Springs digital controller (which I had to repair by replacing the 2R025 BigAMP current inrush limiter)

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    Isaac-1's Avatar
    Join Date
    May 2010
    SW Louisiana

    Re: Pool Solar Panels

    There are a number of factors that determine the number of solar panels you need and how much output to expect from them, this includes your location, how they are mounted, how long you want to extend your swim season, etc. Having said that for significant improvement in extending your swim season you need something over 50% coverage in panel size vs. surface area of your pool, and maybe as much as 100% + panel area in some locations. In your case you have 40 sq feet of solar panel and a 255 sq ft pool, so while you will get some heat out of it, don't expect a big change
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    TFP Guide

    chiefwej's Avatar
    Join Date
    Jun 2011

    Re: Pool Solar Panels

    Just for comparison, I live in Tucson Az, with 100+ temps much of the summer and I have solar panels equal to 80% of my pool surface. Not often, but occasionally, I wish it were 100%.
    Tucson, AZ
    16x36 rectangular (19k) Pebble Tec play pool/spa, Pentair Intelliflo VS 011018, Super II 2hp (spa), Aqua Rite T-15 SWG, Pro Grid 60 DE, Hayward H400 & Heliocol Solar heating, A&A infloor system, fill water w/high CH and TA, 50 ppm borates,TF-100 test kit

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    Join Date
    Jul 2010

    Re: Pool Solar Panels

    I have two 2x20 footers with the exact same pool as yours. I've come to the conclusion that I need at least two more and an automated valve to realize any kind of extended swimming. When the air temp is below the water temp and it's cloudy it's not worth running unless you have an automated system.

    I plan on hooking up one more 2x20 this year. I don't expect to extend the season but it should help temps recover quicker from crappy weather. With 80 sq ft of panel I'm probably gaining 1.5 degrees under ideal conditions. With the lousy weather these last few years, I need at least two more and automation just to get a decent season let alone an extended one.
    18'X4' 7600 Gal AG
    3/4 HP Pentair Pump
    Hayward S166T 100 lb sand filter

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