The advantages of pipeline cleaning can be classified into the following three items:

Productivity

• To improve the quality of the air that is breathed thus contributing to better health and reducing symptoms of allergies, sinusitis, complaints between clients and employees, obtaining greater performance at work and less absenteeism.
• Greater comfort for employees and customers.

Cost effectiveness

• Reduce frequencies of cleaning, painting and repairs of office equipment, since kilos of dust are removed from the pipelines, the same that when leaving stains walls, ceilings, carpets, dirties and deteriorates the furniture and also damages the computer systems.
• Reduction of electricity costs, because according to studies 1/16 ″ of dust layer in the pipelines, it can reduce cooling and heating efficiency by 10% and 20%, thus increasing energy savings.
• Longer duration of air conditioning equipment.

Security

• Reduction in the frequency of breakdowns of office and computer equipment

When to clean the ducts?

The National Association of Air Duct Cleaners of the United States states that the ductwork of a newly installed HVAC system must be clean before its operation, then maintenance should be applied when:

• Accumulations of contaminants or wastes are perceived visually within the HVAC system.
• Microbial growth is observed visually or confirmed (analytical method).
• The pipeline system discharges visible particles into the occupied space.

In spite of these mentioned factors, it is always necessary to take into account that the cleaning of the pipelines will depend on the influences of the external environment of the building, the climatic conditions and the applications that are executed inside the building; which will determine the frequency in the maintenance of the HVAC ductwork of a building.

Duct cleaning and disinfection procedure

The execution of the cleaning of the air conditioning ducts, is based on the use of a method called PUSH / PULL (Push and Pull) which has been fully perfected by the Air Care company in the United States, where this technology and procedures they are applied for optimal maintenance of pipelines in casinos, offices, hospitals and in any place that has air conduction systems.

Air duct experts recommend cleaning by applying disinfectant every 6 or 12 months, while cleaning the ducts as such should be done every 3 or 5 years, always taking into account the conditions of the air entering the equipment.

In Table 1 we can observe the inspection schedule for ductwork cleaning established by the National Association of Air Duct Cleaners of the United States.