Well the old fireplace insert is holding the temps within the 60s inside... Tonight is a test as it will be colder, but this morning it was 61 in the house and we managed to get the temp back up to 70 before nightfall. It is all good, I have an electric blanket and some thermal undies that are getting good use. Wife is thrilled (she likes the cold)... boy is buried under about 6 quilts and seems to be doing fine. Dog is enjoying her heat lamp on the porch but we had to put some water on the porch because her's froze outside pretty solid. I carried some coal out of the fireplace to put in the shed to try and keep it above freezing (so the paints and things don't go bad).