Oh while I am here I'll share how the article got the fiqures so wrong:
1: The incoming cold water in TV is higher than the assumed water temp.
2. You won't have four people in your home.
3. Your heater is in your garage and not in a basement.
4. Your electricity is lower than what they assumed.
Of course you can get the heat pump water heater. If you do OP come back and share your experience.
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