Yes, I installed one almost a year ago. The unit has been working great but I installed it primarly for space savings and constant hot water. In terms of temperature rise -- I have NEVER had a problem getting enough hot water from the unit. Even with the dishwasher, washing machine and 2 showers all going at the same time -- on the coldest day of the year.john_ertw wrote: ↑Have you installed one? If so how is your experience?
I have done some reading and am turned off on the technology. Gas savings will be minimal (I used my summer gas bills when I only use gas for water heating and my BBQ) and even if those are cut in half it will not be noticable. I also didn't like the allowable temperature rise they provide (especially with the cold water intake in the winter) and the increased maintenance.
If you don't find a good price on the unit, it will be a very long ROI to recover the cost of the unit. But with rebates and sourcing them direct, there is an opportunity to recover your costs.
If I didn't require the space and my water tank was working well (and already paid for), I'd see no reason to swap out.