3. How much water will a solar
battery water heater supply?
That depends on your location and how much sunshine you get,
but, on average, a solar water heater can supply around 70-80 percent of a
household's hot water. That doesn't mean you'll be without hot water, because
you'll still have your regular water heater, which will supply the balance when
the solar heater can't, at night or when the sky's overcast.
4. Will we have to change how we use hot water with a solar
water heater?
To maximize the value of a solar water heater, if you need
to use larger amounts of hot water, it's best to do so in the late morning and
early afternoon, when the collectors will have had the chance to heat the most
water.
Also, if you can spread your laundry loads over several days
rather than all at once, that will increase the efficiency of your hot water
usage from the solar system.
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