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I live in the Caribbean and am looking to get a solar water heater system. I’m looking into flat panel or evacuated tube system. I got an offer for an evacuated tube system with a stainless steel tank for a descent price. I have a 2 floor concrete house with a flat roof and no trees nearby. i have 2.5 bathrooms. At the moment we are just 2. Given my location, would the evacuated system be better? What should look for?

I got offered this ET system with installation for $1,300 plus tax.

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It includes a 120 gallon stainless steel tank.Flat panel systems with a regular 82 gallon tank (non stainless steel) run for the same price.

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  • Are the heat outputs of the two systems the same? In the USA that is measured in BTU/day.
    – Hank
    Nov 6 '15 at 15:05
  • Ask the guy in your area who is selling flat plate collectors. In general ET collectors are for locations that are very cold or often cloudy.
    – user39367
    Nov 6 '15 at 15:31
  • @chris Your comment makes sense to me; you'd want to use evacuated tubes when you needed to reduce heat loss in a cold environment. Nov 7 '15 at 3:29

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