Let's talk about indoor contamination, which occurs through the formation of formaldehyde in coverings, buildings, partitions, carpets, volatile organic compounds, cleaning agents, smoking, plants, ozone resulting from electric motors, copiers and also contamination carried by people that enter environments, and on their clothes, shoes, objects, saliva and hands.

Exterior contamination is brought into the interior environment by capturing air, which can contain significant levels of CO, carbon monoxide, CO² carbon dioxide, ozone, NO² nitrogen dioxide, lead, smoke in general and smaller particles.

Another contamination is contamination by randonium that appears inside buildings, through fissures or cracks in walls or floors.

Contamination in the air conditioning system through air treatment units, cooling and condensation septic tanks, trays and ducts, where algae, fungi and dust can be located

A deficient and incorrect global (central) air system, whether due to insufficient outside air (improperly designed), poor temperature control, (poor location of sensors) or inadequate location of outside air intake (at street level where the concentration of CO² is high, in a position that receives dominant winds, polluted from third parties or from the building or company itself, or collections close to the ground that can carry large quantities of bacteria, fungi, leaves, bird droppings, among others...

Air-conditioning system

The air conditioning system operates by suppressing the environment with a certain air flow, having calculated temperature and humidity, and, for the machine to function, the presence of refrigerant fluid is necessary, which is a component inserted into the device with the function of changing a physical state (gaseous or liquid) to another, in the refrigeration cycle, which provides room air conditioning.

There are several refrigerant fluids, such as halogenated ones, sulfur dioxide, ammonia, carbon dioxide, non-halogenated hydrocarbons, among others, with the gases most commonly used in residential and office environments being R-22 R410A and R407C. The latter is included in the ecological category in which refrigerant fluids do not emit chlorofluorocarbons (CFCs), a substance known to be highly toxic to the environment and human beings, being banned in several countries.

Cleaning Air Conditioning Ducts

To provide a good quality of life and health for workers, working in a healthy building, it is vitally important to monitor and control the quality of indoor air using equipment that measures CO², ozone, temperature, humidity and particles. Periodic inspections must be carried out in the environments to check the presence of mold and control the humidity internally so that it remains between 40% and 60%. It must be made sure that the system adopted has air renewal that meets the needs of people in the office (ASHARE Standard 62-2004)

Smoking areas should be away from openings such as doors and windows, as well as external air intakes from the air conditioning system.

When carrying out renovations or works in closed spaces where there is air conditioning, it is prudent to use products such as paints and glues. Solvents and sealants that have a low VOC content – VOLATILE ORGANIC COMPOUND

Importance of Cleaning the Air Conditioner

The air conditioning of environments is regulated by ordinance MS 3523 – August 28, 1994 and by law nº 13589 – January 4, 2018, which provides for the maintenance of installations and equipment of these systems, with periodic cleaning of the ducts being mandatory, installing fine filters in the air conditioning systems to retain particles, at least once a year.

Therefore, the company manager must enable the execution of the environmental quality control program by a specialized professional, with mastery and knowledge of science, complying with technical standards and legal requirements.

Attuale Brasil disinfects and cleans air conditioning ducts as well as the entire area where the service is performed.

www.attualebrasil.com.br