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Indoor air quality and preventive maintenance

altBelow we present some important ecomendations when installing an air conditioning system or when executing the maintenance plan. by Lennox


According to recent reports, indoor air pollution can range from 5 to 100 times the level of outdoor air pollution. Poor indoor air quality (IAQ) can cause dizziness and headaches for building occupants and exacerbate allergy and asthma symptoms. Conversely, good indoor air quality in commercial buildings—such as restaurants, retail stores, educational facilities, and office spaces—can bring many benefits, including increased employee productivity, decreased absenteeism, improved performance levels, and a more positive customer experience. But keeping indoor air quality levels under control is not as simple as ensuring adequate filtration and ventilation. Did you know that there is also a close relationship between the ongoing maintenance of your CVAC system and better indoor air quality? In order to combat some of the root causes of poor indoor air quality—such as humid and poorly ventilated environments—a CVAC system must be operating at full capacity, since most of the building's air will pass through the building at some point. Therefore, indoor air will be drastically affected by the level of hygiene you have. When installing a CVAC system in a new or existing building or when performing maintenance on a system, consider the following recommendations:
- Perform adequate preventive maintenance of the coils and drainage trays. Dirty, non-functioning drain coils and trays are two of the most common sources of odors and can be a breeding ground for more serious indoor air quality problems. - Inspect air inlet and outlet systems; make sure the system is properly designed. - Check the filters regularly and change them as needed. Install high-efficiency air filters to protect airborne particles and reduce concentrations of pollen, dust mites, dirt, mold, spores, fungi, odors, and chemicals. - Make sure that each area of the building is receiving the right amount of airflow. Pay special attention to areas that are near processing or manufacturing equipment and areas exposed to chemicals, moisture, and odors. - Install UVC germicidal lamps in the building's CVAC system to reduce concentrations of mold, bacteria and fungi in the coils; keeping coils clean will help maintain system efficiency, minimize irritants, and increase overall comfort. - Keep humidity levels under control with a dehumidification system. Excess moisture can contribute to the growth of mold and bacteria. These recommendations are quite useful for your systems to be kept in perfect condition over time, which will ensure that the equipment works correctly and provides the necessary comfort for which it was designed.

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