I knew that HVAC professionals are only called when the unit shows signs of breakdown for the longest time. This mindset changed when my overly conscious sister came to live with me for a few months. She was very observant the first few days and kept most things to herself until she couldn’t take it anymore. The air was uncomfortable for her, especially when I went to work and left her to relax and do whatever she wanted. She told me that it was almost impossible to stay indoors when the sun was hot since the AC seemed not working. I rushed to inspect it, and to my surprise, everything seemed okay, so I did not understand why my sister was complaining. I took the next day to see for myself, and true to her claims, my unit seemed to be struggling to cool the space. There was very little cool air getting into the house. I checked the outdoor unit, and it was not obstructed. I remember instructing someone to clear the bushes and debris around it a few weeks back, so it was perfect. Next, I checked the filters, and they were pretty straightforward since I had swapped them two weeks ago. My sister suggested checking the air ducts, which I must confess that I had not paid much attention to. She did the leak test and told me that there was a significant air leak in my ductwork. Her suggestion was to call an HVAC expert to inspect and recommend the best fix for it. When the HVAC specialist came over, he recommended cleaning professional ductwork as the ductwork was clogged and cracked. It required thorough cleaning before it could be repaired.