I had an electric heater, which was perfectly good, but I couldn't resist the price subsidies on the new one coupled with the promise of lower electric bills.
I do not have any meaningful data about what exactly my hot water bill was prior to installing the new pump, as I did not have the heater sub-metered until this month. There is an all-electric setting on the water heater, but I am loath to engage it, and spend more money, just to answer an academic question. I might do it someday anyways.
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