Here are some free resources to help you save money on your home’s energy bill. Hiring a local firm to do a home energy audit would yield more useful specific items to address, but would cost a couple hundred dollars.

Home Energy Saver has a web based do-it-yourself energy audit tool. It is from the people at Lawrence Berkeley National Laboratory. While some recommendations are pretty general, it is a good starting point.

Energy Star Home Yardstick has helpful resources but focuses more on Energy Star rated items.

Money Magazine has an article stating that some people could invest $1500 in insulation and mainteance and get over twice that in energy savings in the first year.  Most of the tips cover those with poor attic insulation, leaky duct work, no programmable thermostat.

Flex Your Power has lots of energy saving tips.

Pacific Energy Center has many free classes on how to save energy.