Many design professionals are proponents of introducing outside air to clean up or dilute contaminants that are in the inside air in buildings where we work. In fact most people think that the outside air is clean, a God-given right. Unfortunately that is often not the case. In fact, according to the American Lung Association, “nearly 138.5 million people—almost 44 percent of the nation—live where pollution levels are too often dangerous to breathe.” In their 2015 State of the Air Report they list the areas of concern and provide details on the pollutants.
Camfil’s approach has always been remove the contaminants at the buildings HVAC system so they cannot get to the building occupants. This concept holds true whether contaminants are generated from inside or introduced to the building through ventilation air. A hidden benefit of using filters, energy savings as the cost of heating or cooling outside air is reduced. Even in areas where pollution may not be as big a factor, the solution to dirty air is not dilution it is removal.
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