Quote:
Originally Posted by Mike80911
Thanks guys. Willam, I believe you are right I have not had anyone here yet but I have a direct vent gas boiler, and I think the silicone that seals the flue joints got old and started to leak causing the CO to enter the basement. Should hopefully be an easy fix. my boiler is 30 years old so I guess the silicone lived it's life span.
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Typically the heat exchanger gets soot buildup and needs cleaned. If the system is venting properly, the silicone is pretty much for looks from my experience. Odds are if you're able to see the burner flame, it'll be lazy and yellow. I didn't do much with boilers but worked on a few for friends. Each time there was a problem I had to take the metal outer panels off where the vent pipe connected to the boiler and vacuum the soot out of the heat exchanger.