Set the IR at 1:30 in the afternoon. Then left for a 12 hour business trip. My wife is out of town so I returned to a 57 degree house and hat coal. Built a nice fire. Then had the privilege of waiting and fiddling for 45 minutes to fire it up, get the secondaries firing and closing her down. It was 0 out. Yep I could have turned on the force hot air gas. NO WAY! Any of you have similar experiences?