I recently completed a home service project for a client who had a severe lung condition. The project involved cleaning the air ducts, which were heavily contaminated with dust and debris. I used a powerful vacuum cleaner to remove all the dirt and debris from the ducts, and then I used a high-powered blower to clean the ducts thoroughly. The client was very pleased with the results, and they said that they could already feel the difference in the air quality in their home. I also recommended that they install a HEPA filter in their HVAC system to further improve the air quality.