My 4 yr old son suffers from allergies. It prompted me to call AZ air duct for service. One of the best things I did in a long time!!! The staff is very punctual, professional and courteous. They use top of the line equipment!!! I was shocked to see what was in those ducts, especially in the dryer vent!!! I am absolutely sure that my AC is working more efficiently now!!! But most importantly my son can breath much better!!! Thank you AZ Air Duct!! We will see you again!!