Solar water heaters vary in design, efficiency, capacity and price, but they all replace a good chunk of the gas or electricity used to heat water with clean, free sunlight.

Solar water heating can reduce fuel consumption by 50% to 70%. For homes with long winters or rainy seasons, solar water heaters may not be as efficient.

And because of their efficiency, solar pool heaters require much less maintenance. You can expect such a heater to last for 15 to 20 years, as opposed to the five-year lifespan of your average ...

While it’s not the most efficient method for solar water heating and works rather slowly, it effectively demonstrates the operation of a thermosiphon and its connection to hot water storage.