Common inexpensive electric resistance water heaters (tank or tankless) require a lot of power to operate, and a typical residential solar PV system may not cover this large additional load. To reduce the load, a homeowner can first utilize water-saving fixtures and well-placed insulated piping. But to make a significant impact, the heating source needs to change. Two technologies stand out: solar thermal and heat pump water heaters. This presentation will cover both technologies with focus on a product new to the USA: solar assisted heat pump water heaters (SAHPs). 

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