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Thread: Pros & Cons of Pool Heating in Ontario?

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    Join Date
    Aug 2013
    Ontario Canada

    Pros & Cons of Pool Heating in Ontario?

    About 5 years ago I installed solar heating to our pool which is barely OK for us in mid-summer when the heat is intense in South West Ontario Canada but, in spring and fall when it's not as hot & the days are shorter it doesn't cut it. The highest we get is in the 82F range in summer so not that great.We have quite a bit of shade & I have a solar blanket on always but the kicker here in Ontario is that our power is the most expensive and we are on time-of-use pricing so in summer the time you want to run through the panels is at the most expensive time of the day at 18c/kwh. During off peak/mid peak we are at 8.7/13.2c/kwh. But our natural gas is reasonable. Would it be cheaper and make the pool more comfortable with a natural gas heater. We have an 18x36 kidney shape with an 8' deep end and a 3' shallow end. If so what size heater would we need? It would be nice to get a full season out of our pool for a change as it is so short to start with.
    Thanks in advance.
    28000 gal in-ground, vinyl liner, Hayward Sand filter, 1 hp Sta-Rite pump single speed , TF-100 test kit, Sunheater solar heat, Hayward 250,000BTU heater.

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    Join Date
    Jan 2017

    Re: Pros & Cons of Pool Heating in Ontario?

    This question is a little like asking the "pro and cons of snowboarding in Florida".

    Seriously though, solar heating is still the best option - can you add more solar panels to improve heating and reduce pump operating time? Perhaps a full pool enclosure would be a good investment. Manufacture and installation of commercial and residential swimming pool enclosures, nationwide.
    20K gal In-ground pool with raised Spa overflowing into pool; two Jandy Sheer Descent waterfalls; Pentair IntelliTouch i7+3, IntelliChlor, IntelliPH, 3 SAM/SAL lights, Pentair FNS60Plus filter, two 1.0 HP WhiperFlow pumps, Jandy/Compool auto-valves, RayPak Heatpump, RayPak 406A LP spa heater, Polaris 360 PS Cleaner. Patio and deck lighting by Volt; Volt 600W landscaping transformer; Webber grilling station

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    In the Industry

    Join Date
    Apr 2017

    Re: Pros & Cons of Pool Heating in Ontario?

    If you paid attention to your gas heater and only used it it won't be bad. Use it when the solar can't get your pool temp high enough. Be warned though, leave it on unnoticed or your kids want the temp to be 90 and you are in for a big bill.

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    CJadamec's Avatar
    Join Date
    Apr 2016
    Quaker Hill, CT

    Re: Pros & Cons of Pool Heating in Ontario?

    A variable speed pump could cut down on your electric bill considerably.
    Also are you using a solar controller to control your panels? A solar controller for the panels can significantly improve their performance.

    A a natural gas heater to work with your solar panels for the start and end of the season could be reasonable.
    15x30 AG, Pentair Superflo VS, 19" sand filter, TF-100 test kit
    Aqua Comfort ACT750 heat pump / 6x20 ground mount solar panel / DIY automation

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    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    DFW, TX

    Re: Pros & Cons of Pool Heating in Ontario?

    Get the biggest gas heater that your meter and gas service can handle. It takes the same number of BTUs to heat your pool from temp A to temp B, so it osts the same to heat your pool with a 250k btu heater as it does to heat it with a 400k btu hewter. It just takes longer with a smaller heater. But, if your gas service can't accommodate a 400k btu heater it could be expensive to upgrade your gas service.

    I agree that a solar controller will make your solar work better and a variable speed pump could save you money.
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