Yesterday morn we let the stove go cold for first time since last October/early Nov. It got to 70 degrees here so didn't need it. Got home last night and house temps were exactly what they had been the night before according the same thermometer in the same location (68). We both froze all night. Got up in the morning and it was 66 as it dropped 2 degrees in the night and we were just plain freezing. Strange thing is when the stove is going those are the exact same temps it would have been and we are comfortable in those temps with the stove going. So I'm thinking when people quote room temps that not necessarily the whole story. Before you say my thermometer is off I have checked it against others and with an IR gun. Its just one of those phenomenas. My house on the 2nd and 3rd floor is 1800sqft with 35 windows (most 6'ers) 3 sets of double french doors, and the great room has an 18' ceiling. Unless I'm pumping continous heat into that space it feels cold.