Air Duct Cleaning

The Mad Hatter HEPA-AIR Cleaning Process

The definition of source removal duct cleaning using the patented HEPA-AIR cleaning process is as follows:

1. Clean the air conveyance system using AIR-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-AIR, 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.

State-of-the-Art Source Removal Duct Cleaning Process

The HEPA-AIR process utilizes a HEPA-AIR portable power vac in tandem with a specially designed AIR-SWEEP portable air compressor and agitation tools for efficient state-of-the-art source removal duct cleaning. This method enables professional duct cleaners to remove contaminants from all parts of the duct system, regardless of location or type of duct. Yet it is simple to perform and requires only a limited amount of access holes. Here’s how it works:

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-AIR 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 AIR-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 AIR-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 AIR-SWEEP if access to the branch duct is available at the main supply duct.
5. Agitation devices such as the AIR-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 AIR-SWEEP assembly to dislodge debris accumulated on duct surfaces. The loosened debris is pulled backward toward the HEPA-AIR 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. 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.