Our work involves the cleaning, disinfection and maintenance of HVAC air ducts, whether they are made of metal, fiberglass, polyurethane or any other material. This ensures a higher level of hygiene and a healthier environment, free from unpleasant odors. Over time, and with regular use, air ducts build up dirt inside from the dust, smoke and grease that commonly circulate through them. This buildup gets worse with poor maintenance, when ducts have never been cleaned or disinfected on the inside. The air quality inside the ducts deteriorates, leading to high levels of CO2 and organic contaminants. The combination of darkness, humidity and temperature inside the ducts creates the perfect environment for the rapid growth of viruses, bacteria, mold and pathogens such as Legionella, which spread through building ventilation and exhaust systems. This is commonly known as Sick Building Syndrome. This lack of cleanliness and hygiene directly and continuously affects the people exposed to it, causing headaches, eye irritation, fatigue, stress, lack of concentration, allergies, coughing, flu, ear, nose and throat infections, pneumonia and more. That is why cleaning and disinfecting HVAC ducts from the inside with specialized equipment ensures complete cleanliness and prevents the spread of illness. It also significantly reduces sick days caused by illness spreading between coworkers in the same workspace, or even in separate areas connected by the ventilation system.