Wear weather appropriate clothes at home.

I see a lot of people not wearing warm clothes inside the home and then cranking up the heater which is an energy hog. Wear as much warm cloths as possible inside the home in winter to reduce the heating bill. Also, the water heaters keep heating the water all day – switch it off when you are leaving your home and turn it on when you come back or buy a water heater that does that for you that has a timer.