Ductworks cleaned our vents and did a very professional and thorough job. Michael explained the process and was very careful to protect our new carpet and hardwood flooring. The before and after pictures really tell the story. I don't think the vents had ever been clean and the house was built in 1990. Now the vents look like new - actually better that new as builders seldom clean them after construction. The dust level in the house has dropped dramatically. I highly recommend Ductworks.