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Jul 17, 2023 at 14:45 comment added gerrit You've described air-to-air heat pumps, but air-to-water heat pumps store the heat in a water tank. This means you can use solar PV during the relatively warm daytime hours to run the heat pump, then use the hot water with radiators to heat your home during the night.
Mar 10, 2016 at 19:55 history answered Kate Gregory CC BY-SA 3.0