Overfilling the kettle when we only want one or two cups of tea could be driving up our energy bills.
And although probably not by much, the recent increase in energy prices means that most households are looking for ways to cut down in any way that they can.
One woman was "blown away" as she was filling up the kettle one day while keeping an eye on her energy habits - as she figured out how to make sure she had the right amount of water every time.
