Why is the operation and maintenance of HVAC systems important?
Improper operation and maintenance of HVAC systems is one of the most common problems that impact workplace indoor environmental quality (IEQ). HVAC systems include all of the equipment used to ventilate, heat, and cool the building; to move the air around the building (ductwork); and to filter and clean the air. These systems can have a significant impact on how pollutants are distributed and removed. Maintaining good IEQ requires constant attention to the building’s HVAC system, which includes the design, layout and pollutant source management or air filtration. There are a variety of pollutants and sources of pollutants in a building such as: • carbon dioxide (CO2) • tobacco smoke • molds and bacteria • cleaning products • copy machines • pesticides • vehicle exhaust HVAC systems alone can act as sources of pollutants. If not appropriately maintained, ventilation air filters can become contaminated with dirt and/or moisture. Microbial growth results from stagnant water in drain pans
