i drained down both hot and cold water to remove a bath replaced it with a shower cubicle, when everthing was filled up again the hot water is not as hot, the water through an aqualisa shower (not pumped) is luke warm and the radiators upstairs get warm when the heating is turned off, please can anyone help me.

P Linton, March 2010

It sounds like you have an AIR lock, you need to drain down again and this time put some washing up liquid in the header tank, this will soften the water Good luck

capitalboilers.co.uk, March 2010