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I'm not sure you'd actually need a pump to get water to most rooftops. Your municipal water pressure should be enough to push it through. I'm not sure corrosio

I'm not sure you'd actually need a pump to get water to most rooftops. Your municipal water pressure should be enough to push it through. I'm not sure corrosion is that big of an issue either. Plumbing in people's houses often lasts far longer than 25 years. Simply running some pipes behind the solar panel and having that fill your hot water tank or flush your toilet wouldn't be terribly difficult, although maybe hard to retrofit.

benhurmarcel 3y ago
> I'm not sure you'd actually need a pump to get water to most rooftops. Your municipal water pressure should be enough to push it through. You'd use a closed loop, not fresh water continuously. What a waste of water otherwise...
- RandallBrown 3y ago
  Isn't the context of this article using the heat from the solar panels to heat water for your home? You wouldn't use a closed loop for that.
PaulKeeble 3y ago
Typically the way this works is its a closed loop with antifreeze in it for cold weather and it coils through a water cylinder to do the heating. So the water that flows through the roof panels never goes anywhere. There are a few reasons for this, mainly the extremes of weather both hot and cold you don't want 90C water in your shower nor to freeze water in the system and break it. All of which adds to the cost any complexity but if you dont do it they don't work.