There was, years ago now, on the original TMF, a long running discussion over tankless water heaters, industry claims of efficiency, etc. I put one in way back, maybe in the '80s, it was a more mechanical thing, and that caused its demise. Bought it local, but online connection with AquaStar, it turned out they were the National distributor, they had troubleshooting info, even sent me rear parts until it became too undependable. They sold me a returned/refurbished one, newer version, by Bosch I think, but fewer moving parts for $160. That lasted quite a while, 10 years, maybe… Then it’s main valve began to leak, worn sh*ft, seals.
I looked at replacing it with another tankless, but prices had skyrocketed, and about that time I tired of doing the work, had my plumber replace it with a regular tank type, at the time we weren’t looking for heat pump WH’s so there it is, raised up, drain panned, EQ braced and all… I added a circulator pump later, so we have hot water out at the far end faster, and it’s working well… I’d have looked at heat pump WH’s, but at the time, NG pricing was not a big deal, so I was glad it was done…
Our new A/C is a heat pump unit, but as it’s air, it flips the NG furnace in if it’s below 40°, … So far so good, at least we’ll have some relief from the sumer heat… Winter, we leave it at 68° and wear more layers as needed… Bills are still up as our Utility tries to recover all their fire losses…
Always tradeoffs… I first ran into tankless at rentals up the coast at Sea Ranch, we’d host several folks, so an endless supply of hot water was nice, opened that door…
weco