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Thread: Thermal blankets?

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    Thermal blankets?

    I live in NJ, was doing some searches online and just came across a thermal blanket for spas. We have a Sundance Hamilton (2014 model) and it is about a year old. Does anyone use a thermal blanket? Wondering if it's something we should look at as we head into the winter again....Thanks!

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    duraleigh's Avatar
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    Re: Thermal blankets?

    Welcome to the forum.

    I am not a spa guy but I assume your spa is covered already with an insulated cover, correct?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: Thermal blankets?

    If what you are talking about is a thin foam sheet that sits on top of the water, then that's mostly to cut down evaporation to slow down how much water gets absorbed by the hot tub cover, especially when it's water-blocking layer gets broken down. Heat insulation should primarily be from the thick cover over the spa.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
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    Re: Thermal blankets?

    Thanks. Yes, we do currently have a cover. I was wondering if it would prolong the life of the cover in addition to providing additional insulation. We do have quite a bit of water on the inside of the cover. I'm not sure how long we can expect it to last.

    (BTW, first time posting but I've been lurking and searching these posts for almost a year now as I switched to the dichlor bleach method after screwing up the first fill with really high CYA...Thank you!)

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    banditig's Avatar
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    Re: Thermal blankets?

    what type of insulation is it? Fiberglas is basically worthless when wet. Foam should help.
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