I have a central heating system to drain down and replace three radiators. I've been 'round to look at the job and had a quick peek in the loft; the water in the f/e tank is absolutely filthy and full of sludge. I don't want to just drain it all through the system because I don't want to allow any muck into the boiler and cause problems there. I know I can bail it out by hand, but am I really just being paranoid???!!!
TerryH
TerryH