Customer states that another company had come out to give estimate for duct cleaning. They stated that the unit was full of biological growth and they had to clean it. Technician went into the attic with the homeowner and showed him that there was no visible biological growth on the inside of the system. There is some slight dust starting to form on the evaporator coil. Installed new UV bulb to ensure system stays clean and a level 1 duct cleaning is being performed on Wednesday the 28th. Payment has been collected d for the bulb replacement but the remainder will be paid upon completion of duct cleaning.