I was hired to repair a heating and air conditioning system in a residential home in King of Prussia, PA 19406. The system was not working properly, and the customer was experiencing discomfort in their home. I arrived at the house and conducted a thorough inspection of the system. I identified the issue and repaired it using the necessary tools and equipment. The customer was very satisfied with the work I performed, and they expressed their gratitude for my professionalism and expertise.