Hot water issue - furnace ?

[ITD]

Originally Posted by SIKSUKR

Curious what you guys are referring to when you say to "clean" your coil. Do you mean internally or the outside of the coil if it has mineral deposits accumulated? Wondering how you clean a coil internally. My Burnham boiler is over 25 years old. I replaced the coil at least 10 years ago as it was leaking into the boiler water. No issues since.

I believe they used an acid or some type of cleaner that clears the mineral deposits inside the coil. They basically choke down like a cholesterol choked coronary artery which chokes off the flow of water and the build up prevents heat transfer too. Water treatment helps the problem tremendously, but I have never been a fan of them, the coils.