Amber,
Call your local energy company and see if they do FREE energy audits of homes in your area. They will send someone over to check where your heat loss is coming from, if the filter on the heater needs to be changed, if windows should be replaced, and a variety of other things. It doesn't cost a thing and they'll use thier computers to figure out how much you'll save if you make the changes they suggest. They also have energy kits for low income familys that have things like shriink wrap window sealers, draft dodgers to block cold air coming in from under the doors.
If your company doesn't have that, they should have the names of businesses that do for a pretty reasonalble price.
Hope that helps,
CJ
