The crew was on time, polite, and professional. Company owner and a helper did the job. They have a clear pricing schedule based on number of vent registers. Ductwork in our 65 year old house had possibly never been cleaned. Understandably, there was some ''blow-out'' when the furnace fan was restarted. However, the mildew smell that I feared was coming from inside the walls is gone. Allergies are diminished. The house smells fresher throughout. The ductwork had been filthier than I could have imagined! These guys did a quality job with the right equipment.