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252 gallon system
Two 80 gallon heat pump water heaters + 200 gallon storage
80 + 80 + 200 = 360 x .7 = 252 gallons usable hot water
Result: better than current but shortages under extreme high demand.
Calculations show: Peak for 1 oversized bathtub, 2 regular bathtub, 5-minute showers, 8 people household: expected usage 300 gallon, so this is getting closer.
The big shower becomes more usable without consuming all hot water.

Connect heat pump to storage tank
290 gallon system
Two water heaters

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