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Boilers - Glycol & Anti-Leak Chemical
Our heating guy recently placed gylcol and anti-leaking chemical into our boiler heating system. However, we have weird issues with tons and tons of air in the pipes, having to bleed it like crazy. As a result, all the glycol and anti-leaking chemicals have already leaked out.
Our heating guy says the reason is because we had shut the boilers down in the summer, they had filled with lots of air, which had to be bled. But, our maintenance guy, when bleeding the pipes, realized that there was a significant amount of bubbles and lumpy gas leaking out, looking like it clogged the pipes.
So, basically, I am wondering if glycol and the anti-leaking chemical do not mix well with our system OR if is really just because air filled up while the boilers were down.
I would like to use the glychol and anti-leaking chemicals if possible, for obvious reasons.
If anyone has experience, please advise. Thank you!