I have a Burnham Series 4 - 403B - that is three years old. The upper part of the chamber has a rust hole in it that causes the system to use a significant amount of water. I have to replace this boiler. Unfortunately, this is the second Burnham boiler that has suffered from this problem. Is the rust condition a known product defect with this particular model and with Burnham residential boilers in general? Am I likely to get any satisfaction out of Burnham through their warranties? Thanks.
