Thanks Tony, I'll have a closer look. Do these symptoms suggest that it is likely to be a valve/radiator leak ? We could not comtemplate lifting flooring, especially downstairs.
Graham
Hi, I wonder if anyone could help me with a problem that's been driving me mad?
I moved into a house around 1 year ago with an Alpha Combi boiler & I've been experiencing pressure drops of around 0.25 bar per day while the central heating system is working. The boiler is fully serviced and...