You’ve asked before how the insulation in the new room is working. I thought you’d be interested in the following: last night, outside temps dipped below zero, and the room’s only heat source at night is indirect (through the open door from the dining room, the radiator in which is on the opposite wall from the door). This morning, the temp in the new room had dipped to about 59. Not bad… and not really all that different from nights when it’s in the 20s (when the room is typically 60 or so in the a.m.) In this extreme cold, we do use the built-in wall heater, but in less extreme conditions a free-standing space heater is often enough.
Jeremy Stern, Newton