Regarding your service of my furnace air duct system last week, I commend you for a job well done and would not hesitate to recommend your services. Kathy was pleasant to speak with and knows her job well. I appreciate the reminder call also. Marcus was the service man, whose work I definitely recommend. Marcus is pleasant, respectful, efficient and concentrated on the work to be done. Marcus was very thorough and the ducts were squeaky clean when he finished. Marcus made suggestions, pointed out issues and made recommendations. Marcus takes pride in his work and hence does excellent work.