[3eb7988a1663]

The pricing page does not make it clear how much the actual unit costs, just $6500 with installation. Never purchased a water heater, but going to Home Depot, I see traditional options priced $500-$2000.

Which says you are putting up a high upfront cost, hoping to recoup on increased efficiency. Which could be worthwhile, but you would have to run some simulations if the price is worthwhile. Seems potentially easier to get a dumb water heater to run extra hot using off-peak electricity.

[porphyra]

I don't expect this unit to be much more efficient than a $1800 home depot heat pump water heater. On the other hand, installation seems to include a hot water return line and return pump (the pump itself would be another $300 on home depot), and I've been quoted around $1000-2000 in labor to install plumbing like that.