They did a great job. Cleaned floor registers and Returns and the J coil in the furnace and the furnace fan blades. Then cleaned dryer duct.
Had their camera peeking through a small hole to show me the crap in the ductwork being sucked into the truck mounted Vacuum. Lots of dust in the floor vent pipes and chunks of old floortile and debris that was probably there for 20 yers before we bought the house
They took the time to do it right and I have video evidence to show my wife. We had them cleaned 2 years ago by another company that only did the cold air returns. BIG difference.
I have videos showing the dust storm going by the camera also. But cant load them here. . Huge difference.