Maybe slightly off topic, for Christmas my brother decided to help out my parents with their energy expenditures. I had previously hooked my kill a watt to their chest freezer during the summer. It was estimating $360 a year energy usage. A couple weeks before Xmas I hooked it up again and it was estimating $160. I mentioned that to my brother so he purchased them a new energy star chest freezer. Ive hooked up the new one to the kill a watt for a week and here's are the results so far.
The original freezer is older than my brother or I. (38+)
The new one
With the power saving of the new freezer it should more than offset the increase from the heat pump water heater. So the results will be a lower electrical bill and no more propane bill. Win win
Hv23t