Hi Steve, thanks for your reply I really appreciate it. Yes safety is important.

My fireplace insert is clean burning. It has double combustion (any heated smoke is captured and re-burned giving off a blue flame inside the burner) and gives off less carbon than a decaying tree in the forest. Here in Switzerland we are also required to have a chimney filter. If the wood is properly dry you won't even see anything coming out of the chimney. It's amazing!