Recently my heating pipes under the floor upstairs in my house have
been making very loud noises, rattling around and generally sounding
like a train is coming down them! This happens first thing in the
morning mainly but occasionally in the evenings. Both times are when
the boiler comes on to heat the tank. I havent got the heating on at
the moment as it is summer! so I am confused why the heating pipes
would be making that noise?
I thought it may be air in the system so I have tried to bleed the
radiators but there was no air and all seems fine.
We started getting a loud bang-bang-bang-bang sound whenever the
boiler came on. Although the sound seemed to come from the pipes it
turned out that the flue had come apart in the loft and it was the
boiler's interrupted combustion doing it..
One common cause of this is that the boiler has got scaled up, or
clogged with sludge circulating in the water. This makes the process
by which heat is transferred from the buring gas to the water
inefficient, the boiler heats up too much, bits inside it expand
rapidly, which makes a noise that transmits along the pipework. You
can get stuff to clean the boiler out - fernox make various products
for this purpose. A search of the google archive for this group will
find you loads of posts on the topic.
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