That sounds like us when we first bought our house, we quickly learned how expensive it was going to be to heat. We had to keep the house at 58 when we weren’t home and 64 when we were, it sucked. The next year we got a wood stove. 3 cords of wood for the winter and we supplement with oil. Our house is now at 68-72, we got 100 gallons delivered in November and we’ve barely used it!!