I moved into my house about 12 months ago. The gouse has a gas boiler which heats the central heating and water, which from the guarantes was installed about 5 years ago.
My problem is that in my 2 upstairs bathrooms, I have tall towel radiators. Every 1-2 weeks, these are cold at the top, hot at the bottom. Bleeding seems to work, but not for very long.
Why? There are no obviuos leaks and all tanks in the attic are full and the values fully functional. Is there something simple I can do, or is this a plumber job?