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Thread: Help with Solar decision and my roof orientation

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    Join Date
    Jul 2007
    Location
    Ohio
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    47

    Help with Solar decision and my roof orientation

    I am very interested in heating my yet to be built pool with Solar. I am stuck now, because my roof that I could use for panels faces NORTH. From what I read, this is basically unacceptable. Here is why I am having a dilema with this. My roof is a large soft pitch flat roof that gets BEAT with sun. Does anyone out there successfully use solar facing North? Does it work, just not as efficiently? I have put a picture in of the roof as well, Thanks for your comments.

    My pool will be about a 30K gallon vinyl.
    Attached Images Attached Images
    16X24X40 Grecian L Vinyl Pool - Dig 9/4/2007 and first swim 9/21/2007
    Located in Ohio Approx 27K gallons
    Pentair Whisperflow 1 HP 2-speed Pump
    Hayward Sand Filter Jandy AE2500 Heat Pump
    Autopilot Dig-220 w/sc-60 cell

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887
    Solar panels on a North facing roof will provide some heat, but less than on a south facing roof. How much less depends on the slope of your roof and where you are. The further North you are the more dramatic the difference. Near the equator a North facing roof wouldn't be too bad but in Canada it would mean a major loss of output.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    Join Date
    Jul 2007
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    Sahuarita, AZ
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    278
    It's going to be less efficient for sure, but you should be able to compensate with more panels... it'll add cost, but it looks like you have a LOT of available roof space. I've read you want a MINIMUM of 60% of your pool surface in solar panel coverage w/ a nice southern exposure. I'd guessing with only northern, you'd probably want in the range of 120% surface coverage.
    My Pool:
    12K gal IG gunite with 7' raised spa, gunite waterfall, PebbleTec Caribbean Blue finish, solar heating & in-floor cleaning system

    Equipment: Sta-Rite 300' Cartridge Filter, Intellichlor IC20 SWCG, Sta-Rite 400k BTU heater, Intelliflow 4x160 main pump & Sta-Rite 3/4 hp waterfall pump, EasyTouch controlls w/ wireless controller, TF-100 Test Kit w/ salt test.

  4. Back To Top    #4
    TFP Guide

    In the Industry

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    May 2007
    Location
    New Brunswick Canada
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    819
    Chuck, is that picture the back of your house that faces North? If that is the case, you can put your panels on the front of your house. I have around 340 Sq Ft of Surface in my pool, I have 160 Sq Ft of panels facing south, I easily get 10 degree boost when the sun is showing its pretty face. That being said I will be adding 1 or 2 more panels next summer, cuz I am a Tim Taylor Type 1 Personality, MORE IS BETTER

    I have a neighbor who has his panels on the front of his house, if done properly and all white piping is painted black, you can barely notice it.

    Rik

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