Row home a little under 1100 square feet. Winter it’s been between $150 and $200 each month when it’s been really cold. We keep it set to 69 (nice) when we’re home and 65 when we’re out or asleep. We also have some nice electric space heaters that we use in the living room, bedroom, and our sons room that have helped keep costs low all winter. Thankfully the houses next to ours crank the heat so we only lose a lot of heat through the floor above our porch that isn’t insulated well.