Welcome! Here are the website rules, as well as some tips for using this forum.
5 HTP MC Contender Heat exchanger failures in 2018- How many for 2019?
We have installed dozens if not hundreds of HTP MC Contender boilers over the last decade or so in our service area ( I have 2 MC50 in my house). In 2018, many of our customers mysteriously had cracked or leaking heat exchangers in their Contender units.. Sometimes the leak/crack was on the connection to the two copper supply and return tubes. Other times they were on or near where a sensor mounts. Since we have so many of these units out in the field, I was wondering if we we should brace ourselves for a continuous wave of these units failing and if any other companies are experiencing similar failures with these units. I thought for sure these units would last 20 years or more, especially in our mild climate.