We have a hot water tank with a dial on the side ranging from 40 degrees to
80 degrees, what would be the best setting for economy as our gas bills are
enormous for some reason about £140 a month. We had a Micro Glow-worm 80FF
boiler two years ago.
There is also a switch on the wall with a cable running from it to a small
black box which has a large copper pipe running through it. I assumed this
was an immersion heater and turned it off at the switch. How do I know if it
is an immersion heater and should I have switched it off?
Sorry to sound thick but I know nothing about central heating etc.
Any help appreciated.