Be careful when they offered this service, is not ...

Be careful when they offered this service, is not what it s , they offer a special package and charge you just to inject dust in to the main unit, and never work on any duct. They will tell you the information where wrong offered by the company, also, they have two guys that spend 10 minutes of the service. My home is more dustier now then before. Don t trust A1 air ! Bunch of liars.