refilled water, boil-off O2?

Steven Todd

Hello.
Just had my boiler serviced, including all new fresh water (Weil-McLain, PEG-50) -- how long should it run to boil the oxygen out of the water? Thank you.

Ken_8

Forever!

As soon as the boiler returns to ambient, the O2 will return. Granted, not with the heavy concentration of a clean fill from the tap, but not all that much different.

If the boiler was skimmed while warm, that's about as good as you'll get without adding rust inhibitor(s).

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