What are eight things you can do to make your house more energy efficient?

1. Insulation the proper thickness and new if needed.
2. Filling all cracks holes and other air leaks around your house. New weather striping.
3. Update all appliances that you can to Energy Star rated appliances it does make a difference.
4. New Windows. Dual pane insulated Windows and new exterior doors.
5. CFL light bulbs in all fixtures. I have been using them since they were first introduced and they have come a long way. I still have some of the first bulbs I purchased in the late 90's and they work just fine. If you break them don't freak out they will not kill you. I have broken a few and have no diseases or third eyes growing in my forehead. Simply sweep up the broken pieces and DO NOT CUT YOUR SELF. Triple bag it and throw it away.
6. Update your old thermostat to a programmable digital thermostat. Set it for 80 when you are away and 78 when you are home.
7. Update your furnace or A/C unit. There are incredible efficient models available on the market.
8. New insulated siding or a heat reflective coating on your home.