But the idea of having to run 50-150A service to each bathroom (and a new main breaker cabinet -
http://www.gotankles...requirements.html ), or new gas lines to each sink (and possible exhaust), isn't terribly appealing.
I saw a "how it's made" show on TV that showed these A.O. Smith HE tanks being manufactured. Neat stuff, but spendy - $2k!
http://www.hotwater....idential/gas.html I have no idea how long it would take to pay for itself (it probably can't), but natural gas isn't going to be getting cheaper...
Cheers,
Scott.