Hmm, 7th revision doesn't sound like they got it right on the first 6dan the man said:End of the day its their 7th generation condensing boiler, most manufactures are on their 1st or 2nd.
Yeh which is ok except for the poor *** who has to repair them. Come to think of it, have any of you tried to wire up a keston c25 - nightmare as the wiring block is in the most inaccesible location.dan the man said:small too
Go for a quality boiler with a 10 year warranty on the heat exchanger. Viessmann or Atag meet that requirements and they still use the same style of heat exchanger that was used well over 10 years ago.