Unfortunately we had a bad experience with our air duct cleaning. Coit had to come back 3 times to make it right. The first cleaning was done very quickly and they missed 4 vents and when we took pictures there was still debris left in the vents and ducts. They came back and vacuumed out the missed areas but then when our heater turned on that night, debris came out of the vents, including a piece of glass, and I noticed because our baby's blanket was under the vent and the next morning was full of dirt and the pieces of glass. I spoke with the manager at Coit and he promised to make it right. He sent out one of his best techs with the larger truck who re-did the entire job and was very knowledgeable. After the 3rd time it appears our air ducts are finally cleaned right.