Types of solar HWS: Retrofits
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Solar hot water heaters can reduce your household carbon emissions by more than 20%, besides cutting your energy bills drastically. Choosing a style of solar hot water heater can be quite tricky, and it's a great idea to get a solar professional to work through your options. However, here's an explanation about retrofitted systems.
If you have an existing conventional off-peak electric hot water heater, you can retrofit solar collectors to it. Because conventional tanks aren't usually designed for connection to solar, you must make sure that the collectors are good quality if you're using a pumped system, and the speed of the pump is optimal.
Usually gas water heaters can't have solar retrofitted to them, unless there is enough volume of water in the tank and the gas burner won't ignite during daylight hours.
If this type doesn't sound right for you, check out the other types of solar hot water systems.
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