I used my Paslode CF325 in extreme subzero weather for 4 hours a night for at least a week - drove 3" ring shank galvanized nails full depth no problem.
My biggest issue was bringing it inside too often, it would then get frosty and not want to load the next nail. I just left it outside after that. I did keep a spare fuel cell warm though - never needed it b/c of the cold. If working alone - I would not want an air nailer. If I had a crew or was part of one, then maybe. I'd say I have driven about 5-6000 nails at the minimum, and I just now had to clean it.
I am not a professional - I am a DIY'er doing a fairly large project. So, I know little about the Paslode CF325 over the long haul and daily abuse. That being said, everything local building pros have said to me: "you cant do that!" has been nothing but h0r$e 571T
