1. Clean the air conveyance system using Abatement AIRE-SWEEP® compressed air tools and mechanical agitation brush systems to dislodge dirt and other contaminants from the ductwork and other HVAC components.
2. Use a powerful Abatement HEPA-AIRE, HEPA-filtered vacuum/collection system to place the section of the duct system being cleaned under negative pressure and to pull dislodged contaminants out of the duct system to capture them.

A conventional HVAC duct system consists of a supply system of ducts to carry heated or cooled air from the furnace/air conditioner (air handler) to various parts of the home or building, and a return duct system to bring fresh air back to the air handler to be heated or cooled again. The supply network consists of a main duct, which carries air to smaller branch runs, which carry air to the desired locations. The return network works in reverse.

1. The supply and return networks are “zoned,” or separated, so they can be cleaned independently. This is typically done by removing the furnace filter, inserting it into a plastic bag and reinserting it into the furnace.
2. An access hole is cut into the supply plenum and the flex duct from the HEPA-AIRE vacuum inlet is connected to the plenum with a quick-connect attachment collar. The powerful vacuum creates high velocity air movement within the supply ductwork to transport loosened dirt and contaminants out of the ductwork and into the vacuum's filtration/collection system.
3. Each branch is cleaned separately starting with the branch farthest from the vacuum. The register and boot areas are blasted with compressed air from the AIRE-SWEEP compressor using the special air booster gun to push any dirt or debris into the branch run.
4. The branches are then cleaned by feeding the forward AIRE-SWEEP assembly down each branch run to push dirt and debris forward into the main run. The branches can also be cleaned using the reverse AIRE-SWEEP if access to the branch duct is available at the main supply duct.
5. Agitation devices such as the AIRE-SWEEP Power Brush or Duct Whip are also used to dislodge caked on debris from inside duct surfaces.
6. The main run is then cleaned using the agitation devices and the reverse AIRE-SWEEP assembly to dislodge debris accumulated on duct surfaces. The loosened debris is pulled backward toward the HEPA-AIRE portable power vacuum and captured in its multi-stage filtration/collection system. One-inch diameter access holes need to be cut only every 25 feet.
7. Once the supply side of the system has been completely cleaned, the return duct system is cleaned using the same method.
8. At this stage the coil, motor and blower, and blower compartment are cleaned.
9. Once the entire cleaning process is completed, all access holes are completely closed with the efficient caplugs and insulated spin doors that seal off any leaking and make the duct systems easily accessible for repeat cleaning.