I didnt state anything different on condensing systems. There are
tankless condensing, how do you think a 94 EF rating is acheived, 94EF
the highest rating of any water heating system. One of the highest
rated tanks I know of is my AO Smith Cyclone a condensing commercial
unit. It is in no way more efficient than my cheapy bosch non
condensing tankless, Read the EF number on AO, if you can find it,
because they hide the sad truth.


one of the AO Smith condensing water heaters get the fed energy
credit.

thats a wonderful tax break