My wife and I fell asleep in front of the TV last night and were both woke up from what sounded like a gun shot. I jumped up and ran strait to the fireplace. Everything look fine so I went outside and the chimney looked fine. I just got my quad insert installed a couple of weeks ago and everything seemed to be going good so far. This was not just one of the little pops and creeks that it makes when it gets hot. It sounded just like someone litereally fired a gun off in the house. I'm new to burning. Can anyone tell me what this may have been? At the time that it happened I had a huge coal bed dampered down just waiting for a few big logs before bedtime. The stove temp was right around 450 degrees or so. Does anyone know what this was? Was it just a really loud coal pop or something?