Ten plus years in our house, with two separate renovations completed, then to learn the prior ten years from when the house was built, the ducts had never been cleaned. We had no idea. . .then to hear and see the amount of dirt and debris removed from the system that distributes the air that we breath - wow. Ductworks was fantastic throughout the entire day long process - friendly, tidy, respectful - and most of all their product worked amazing. We are still in shock at how we allowed ourselves to live before. Never again - Ductworks will forever be apart of our Spring cleaning routine.