Had gas engineer in this week and he had to replace hot water motorised valve.Before he left he said he had set thermostat at 55*C.I have always had this a good bit higher,nearer 70* I think.There are only two of us in house and the 55* seems ok for showers,dishwashing ,etc,so have I been wasting money?Is there an economical max temp.for H/W system??I would be interested to know what others think.
tab