Got a car?
You can cut your bills there too! Pump your tyres up to the "full of passengers" pressure, drive at maximum torque (efficiency) speed, don't use too much gas until the water is 88 degrees (most efficient for heat transfer), look ahead so you never brake and don't wear the tyres out driving over cats eyes. Before you ask, yes, my old man hailed from Scotland. In the home, after boiling the kettle, put the surplus in a Thermos flask and use that as a starter for the next cup.
Its all very well having a class A house, but you need class A occupants as well!