Each number represents the room temperature at which ... The advice was backed by a boiler expert in the comments, who advised having the dial set no lower than three when you're not away.

It's something you use every day and you've probably not had to think about it before - but now people are only just realising what a fridge's dial numbers actually mean. They're a vital household ...

When you pull the dial back to the stop using one of the numbered holes and release it, it causes a switch to open and close the same number of times as the hole you selected. That is, if you pull ...