I have just recently moved to our current address and we have a Aqualisa shower, which somemornings only has cold water and others has hot water. I take a shower at the same time and the heating system comes on at the same time each day. Any ideas wht this occurs.

Mark Gibbons, December 2007

Sounds like your shower runs off the cold water feed,don't run taps, heating,washing machine etc when having a shower,set your heating for half an hour before your shower and to go off while showering,you ain't got a problem,just if you are drawing cold water from your taps while showering your shower heater cant keep up fast enough.P.S on cold nights the reservoir temperature can really drop so the water is colder when it gets to you,you will have to turn up your shower dial.

Rich, December 2007