Valdemar
Well-known member
$4,000 should be enough to keep water warm in my house for 10 years if not more.
RegGuheert said:So how much does it cost to run a natural gas water heater (50 gallons)? (FWIW, I just used the numbers from the sticker on the side of the water heaters for my calculations.)
Levenkay said:Would there be any merit in using a heat-pump water heater, where the heat input side of the heat pump (its cooling coils) was thermally bonded to the back-side of a solar PV array? Chilling the PV ought to boost its efficiency plus dump gobs of heat into the pump...
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