NO I didn't open it. But it is the basement and the temp in there is 66 degrees even with the heater vents open all the way. And it's cold outside today and rainy. I forgot to look at the room temp when I was down there. So hopefully all is well when I candle I usually just remove one at a time look and replace to prevent cooling but after reading the brinsea article and hearing you guys respond I am much more at ease.