I wasn't too surprised by my score. I just bought my house in November so have only lived in it when it's been cold (brutally cold, some days!). I have a very old furnace, single-pained windows and a fairly old front door that, despite putting weather stripping in, is still a bit drafty.
I have replaced one of my doors with an energy-efficient one (back door). I also want to add insulation in my attic this sprint or summer, when I have time to work with my dad to open up the crawl space so it's easier to access the attic space.
I have long-term goals to replace many of the windows (and probably the front door as well). When my dad helped me to replace the back door, it was a larger-than-expected project because the house is older and what's "standard" today isn't the same as what was "standard" then. So there was a lot of retro-fitting and re-working.
I'm not sure when I will take care of these things because I have some other large projects coming up (replacing my roof, namely!). I have considered getting an energy audit to see what it would cost to make some of these "upgrades." Then I could determine if it would be realistic for me to take out a loan. I also am not sure how long I plan to stay in my home! So, I need to weigh the costs and benefits of spending my money on a place I may only be at 3-5 years.