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A self-sufficient water system for a home could include a rooftop cistern and solar thermal water heater.
The home integrates roof-mounted solar hot water panels with an air-to-water heat pump; both sources feed into an 80-gallon stainless steel tank.
The home’s solar water heating system includes two 30-tube evacuated tube panels and a 120-gallon storage tank with electric back up.
The solar hot water system with 80-gallon storage tank should provide all the hot water a typical family needs.