I am a highly skilled and experienced home service professional. I recently completed a routine maintenance job for a client. During the inspection, I noticed that the HVAC system was performing as it should. However, I also noticed that the ducts were dirty, which could be affecting the system's efficiency. I offered to perform duct cleaning as an additional service to the client. The client agreed to the duct cleaning, and I scheduled a date for the service. I arrived on time and performed the duct cleaning using specialized equipment. I cleaned all the ducts, including the supply and return vents, and removed any debris or buildup that was present. The client was pleased with the results, and the HVAC system was now running more efficiently. I also provided the client with tips on how to maintain the ducts in the future to prevent future issues.