My expansion tank has just failed, after only two years. Is this usual? Is this a probable manufacturing fault? Or is this just the expected life of such tanks?
Alternatively was the expansion tank too small (8ltrs on a system with
9 rads, two of which are very big doubles).When the system ran, the water pressure went up from 1 bar to 2.5 bar. More recently it hovered up to 3 bar. Then it failed.
Richard