At our house we recently completed a survey sent to us from the power company to access the energy usage and potential savings we can have with some small and some large changes. I was very surprised at what they asked as it was more in-depth than I thought it would be. I had to go look at the frig and hot water heater to find out what the ratings were and how old they were. Unfortunately, there were a couple of things I was not able to do because of the weather but I felt I came close to getting it right.
It took about a month to get the results back and we have found them both informative as well as mostly doable. It broke the changes down into cost and let you know how many months it would take to recoup your investment, which helps you access what you should or could do. If you get the opportunity to do something like this I would highly recommend it because you learn what you have done right and what you can improve and; you save money!