My Midas SI has problems sustaining hot domestic water, the heating system is ok, the hot water works for a time then fails, when fails the temp will not move from 30c however when the temp does move to 60c the hot water works, I have been told by an engineer to buy a new boiler, there must be just a part failing to sustain the temp needed for constant hot water

Geoff Husband, February 2011

Dont know the boiler is it a combi? It sounds like a problem with the thermostat on the hot water side.
Replacement if it is. Boiler replacement sounds a bit drastic though but the engineer may have seen other problems, invite another engineer for a diagnosis.

best policy, February 2011