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Why clean radiator vents with vinegar?
I see on this website, and many others advice to clean radiator air vents with vinegar. Why does this work? I know vinegar dissolves scale but I can't see how any scale should make it to the vents. Only steam is fed to the radiator. The dissolved solids stay in the boiler. If the failures of the vents are due to corrosion of the copper or brass working parts wouldn't something like ammonia be a better cleaner?