The upstairs radiators in my house have been making noise for some time
time. I was windering what could be causing it. It sounds like
"wush-wush-wush-wush" mixed with "tap-tap-tap-tap". I have tried bleeding
them ut to no avail. The downstairs radiators are fine.
1) The noise is as described above.
2) It only affects the upstairs
3) The nois level changes
4) It only gets noisy if the central heating is turned off. It's silent when
the heating is on.
Any suggestions would be welcome.