Hey all, I have been lurking on this site for awhile. I have been using my open fireplace to try and heat my home for awhile, 1400 sq ft. I have found several pre epa inserts around here for cheap. Everyone tell me to just slide them in and use it. My fireplace is a masonry type. I have been told the only thing is that i will need to clean the chimney more often. Any help will be apreciated.