Southern Comfort's crew arrived on schedule and did their job quickly and efficiently. They wear smiles and are very courteous. They cleaned the ducts swiftly but efficiently, vacuuming any fallen debris, leaving my home cleaner then before they arrived. Finally i had a good nights sleep, absolutely no coughing. The air is clean and germ free, thanks to the good job and the new UV light. Thank you Zack and your crew!!! YOU ARE THE BEST!!!