Air Duct Cleaning Machines
Contact Cleaning Versus Negative Air Cleaning
There are two universally accepted methods to clean air ducts. One method is called contact cleaning, which stirs up and collects the debris at the point of contact. The other method is negative air cleaning or the "push-pull method". This method of air duct cleaning involves putting the air system under negative pressure, disturbing the debris and collecting the debris in one place.
Contact Cleaning
Contact cleaning uses a powerful machine that has a hose and brush assembly that is pushed through the air system. As the brush rotates and disturbs the debris, it is immediately drawn into the hose. The hose and brush must be pushed through the entire system to remove all the debris.
Air-Care has specially designed our DuctMaster Air Duct Cleaning Machine (pictured at right) to be a powerful and effective tool at removing air duct debris using the contact cleaning method. The powerful brush and hose assembly is the perfect solution for residential and small office jobs. If you encounter large homes or commercial jobs, using the negative air cleaning method will produce more desirable results.
Negative Air Cleaning
Negative air cleaning involves placing a powerful vacuum machine at one end of an air system by attaching it to a return or supply vent using a 10 inch hose. The rest of the vents are plugged and the machine is turned on, thus creating the negative air pressure in the duct system. Debris that is light or has not adhered to the surface of the ducts is immediately drawn into the machine.
To remove larger debris or debris that has adhered to the surface of the ducts, a rotating brush or compressed air is sent through the system through one vent at a time. The brush or compressed air disturbs and dislodges the debris so it can be sent down the system into the negative air machine to be collected.
For more information on the various air duct cleaning machines that we manufacture, visit the Air-Care.com Equipment page.
