Roger that Fred! The side of the family which doesn't know which end of a hammer to use wants a new oil furnace. My side of the family is worried about the 50 year old twin oil tanks in the basement rusting out and draining into the floor drains which go,.....you get the idea
I'm leaning towards a heat pump with electric back up or simply an electric furnace. Either shut the heat off or get a low temp thermostat and set it for 35. The other side of the family is concerned the plaster will crack if the heat is off. Being reminded that it survived decades with no winter heat doesn't sway them. It does need heat for spring and fall occupancy. Probably a 1500 square foot Cape Cod with no insulation and single pane windows. It's 80 plus years old.