I dealt with Jason Abbott at Mr Duct Cleaners, I live in the Richardson, TX area. Jason and his entire crew were very professional and paid close attention to detail. Everything was covered to collect debris, and the crew cleaned up/vacuumed before leaving. I also appreciated they are also HVAC certified so they can clean both the ducts and the HVAC system. He is set to come out 4-6 months in the future to inspect/ensure their work. I would definitely recommend Mr Duct Cleaner.