The last couple of says I have heard "bubbles" in the central heating.
Not constantly but once or twice a day I have heard what sounds like
bubbles running through the pipes. The bubbling lasts a few seconds
then stops.What does this mean? Surely if there was a leak, I'd have
bubbles constantly? I have not added fresh water so there should not
be any air in the system, unless it is filling from the header tank
without my knowing.
- posted 12 years ago