If you haven't checked out wood stoves and manufactured fireplace inserts in the last five years, you may be surprised. Not only has there been a drastic reduction in smoke and emissions, but there has been a corresponding improvement in efficiency. In this article I'll describe some technological advances you may not be aware of, and review the types of woodburning equipment now available. If your clients ask your advice when shopping for a stove or insert, you may be able to help them avoid a costly mistake. Back in the 1970s, the best stoves were called "airtight." While these had gasketed doors that helped hold a fire overnight, they were