John and crew were great. I requested they come as early as possible in the day and they came right on time. John and the other guys were very friendly and did a great job cleaning two duct systems. They also cleaned up after themselves. Process for two systems including cleaning both coils was about 3 hrs. John was even friendly enough to help me out while I was struggling holding up a tv that I was hanging on the wall with my 6yo. Thanks John!