A lot of the improvements would be built around any renovations / remodels you want to undertake. One of our previous homes was built in the 1900's. One of the

A lot of the improvements would be built around any renovations / remodels you want to undertake. One of our previous homes was built in the 1900's. One of the things we did that were immediately noticed were upgrading windows to double pane. Again not feasible if you don't need the upgrade, but for us it was a worthwhile investment. We also found that leaving doors closed in various rooms was important to retaining heat. The hallways would be cooler but it made it much easier to spot warm parts of the home with a heater if absolutely necessary. There may be a local company that can give you advice on things you can do in a cost efficient, least headache manner. Whatever you undertake though is probably going to be an expense, so check with your local state / county and see if they have any energy efficiency improvement programs. I just used one to improve windows and attic / crawl space insulation in my mother's home. Good luck