Wood stove inserts are constructed of cast iron and are placed inside the opening of the existing masonry fireplace. These inserts are more difficult to clean because the chimney technician is required to move these very heavy inserts out of the fireplace far enough to crawl behind the insert. Access behind the insert is required to clean inside the fireplace and areas like the smoke chamber and smoke shelf. A properly lined wood stove insert has a direct connect liner to the top of the chimney and removal of the wood stove is not required and thus additional cost is not required.