When I used the heat in my JGC back in early April when it was delivered, and we still had some cold nights, I noticed what you're talking about, especially the "burning wood" smell. Initially I thought of taking it to the dealer, but it quit making the smell in a short period of time. We've been using the heat again, and I haven't noticed the smell. I would only be guessing at the cause, but whatever it was, it's gone now. I'm thinking things like the first time you use a new oven, toaster, etc., or the first time you fire up your furnace for the season. By the way, if you're a Red Sox fan, congratulations!