DIYbanter - View Single Post - Continuous clicking from apartment heating system

yourname

wrote:
Coming from within the wall, there's a relatively loud (and sometimes
quite annoying) constant clicking sound at even, though gradually
changing intervals. If I turn the heat up, the clicking starts
immediately with a fraction of a second between each click. Usually
that lasts for a few seconds and gradually slows down to a few seconds
between each click. Of course, it keeps doing this in cycles and
doesn't let up much between cycles. I'm not sure what type of heating
system it is, but there are baseboards, and when I turn the heat up, it
sounds like water or something starts circulating. Any idea what's
causing this and if it's normal?

probably normal. it is the pipe expanding as it heats up, then
contracting as it cools. Each click is a little fin moving past the
bracket it sets on. If you take the fronts of of the baseboard and look
at it, you can probably find somewhere where it is sticking badly and
maybe move that bracket around. maybe a slip of cardboard between the
two will alleviate it somewhat.