These pictures show a before and after cleaning of rectangular duct work. This duct work is in a building that was effected by smoke and soot damage after a fire in a building a couple doors down from it. The duct work had not been cleaned in many years and had lots of debris build up. We cleaned the duct work, sanitized it, and added fragrance beads to the system so that as the system for the heating ran it would help deminish odor. The building is being deep cleaned. The duct cleaning is very important process in any cleaning process. We clean commercial and residential duct work and recommend duct cleaning every 2 to 5 years and after any construction process.