Hi Tony,
You asked what I had done to check and re-pressurize the existing vessel. This was a new one fitted in June 2012 by the previous owner's plumber. I checked that there was no water in the air side and that the pressure was 1 bar when the water pressure was zero. (1 bar is what Grant...
My daughter bought a house in Somerset last year (2012) and had problems with the boiler losing pressure and needing frequent topping up.
The boiler is a Grant Outdoor Vortex Combi about three years old.
The previous owner had clearly had the problem and we have the plumbers bills to...