Installed a few months ago. They say the glass should stay clean but it always gets covered in soot. I have been using some store bought bundles as my oak will not be seasoned till after March. Im getting better but it always seems to take 30 min or so before the blower kicks in. I noticed the putty they used at the pipe joint was starting to flake as well. The company who installed it also chipped my brick removing the old insert. Overall I love the new look though.