My parents had a wood burning stove, fit into the fire place, at the farm. It did help keep the house warmer but because the house was so large they still used oil heat. I believe they saved money but since it was only used to suppliment, they didn’t save a lot of money.
A friend used only a wood stove a few years back. He did save money but finding, cutting and using the wood took a lot of time and energy.
Things to consider you can’t turn down the heat if it gets too hot. You must have a fire proof area surronding the stove. My sister had my brother build a brick wall for the area around her stove. Her bricks were bought cheaply because the manufacture had them left over from another project. Your chimney area needs cleaned yearly (more often depending on the type of wood and other things you burn). You must keep water around the stove as it dries out your house otherwise. You have to learn how to bank the fire so you don’t need to restart it every day. If you have little ones they could get burned so you need a barrier around the stove.
There are a lot of other factors to consider that I probably forgot. Your local fire company can probably address these other issues for you.
Let us know if this helps. Also if there are any other bits of information that might help. I lived in Central Pa., around Harrisburg, (as did the others). I used only oil heat and turned down the thermonstat the furthest it would go at night. I snuggled under several layers of blankets at night. Every winter I insulated where I could. Once we lost power for 3 days and the temperature was below freezing. Our only heat was a 10,000 BTU Kerosene heater. None of our pipes froze. (We kept the cupboard doors open under the sinks.) At night I used a water bottle and a couple extra blankets. CSinbad.