In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
What happens if install a Buderus GB142
properly and it does not get cleaned for 6 years? I will tell you. It gets hit with lightening. I was dreading the day I finally got the no heat call on this boiler and it came during the biggest heat wave in a decade, no domestic hot water. I expected to find a clogged even leaking heat exchanger, I found a nice clean one. Spritz of water and it was like new. The drain was clear and no blockage, residue in the trap was almost nothing. That is the good news. The bad news was the UBA3 was toast, when that was replaced it let me know the fan was shot. When that was replaced I found the AM10 was out of commission. Due to parts availability and communication break downs it too four days to get the heat back on line, the hot water was back on the next day.
The reason I am writing is I strongly believe the Aluminum boiler is being black listed the same way the gasketed cast iron boiler has been. The boiler is not the issue, the bad installation and installer is the problem.
I see boilers dead every day due to bad installations. Even 100 year old installations.