I am amazed at how good the air wash works. I have a small 1.3 firebox so for me stuffing is tough I can do one larger split, one medium split and one small and I am full to the gills. Anyway to my point three times now the wood shifted too close to the glass and I got a black mark and thought "GREAT that's not coming off", but after a half hour up to full time the black spot is gone! About once a week I just clean the ash and a light film off but I am amazed at how well it works.
Napoleon 1100C
Napoleon 1100C