Good time to run a self clean cycle on the oven. But overnight at 12 degrees I would think you’d be fine. I’ve seen houses go 3 days below zero and not freeze water lines. It was still in the 40s in the house when I got there to fix the furnace.
I shuttle weekly between the farm house and the house in town and turn the thermostat down to 45 when I leave for a few days. Unless the wind blows hard, it rarely gets down to 45 in two or three days gone.
That said, MN and ID houses have different insulation packages than KY, and I expect his mileage might differ.
