Building Air Quality

VQC provides Building Air Quality service with tools to evaluate, identify and assist in the alleviation of building air quality hazards. VQC assesses, inspects and evaluates the condition and maintenance of building ventilation systems and identifies solids, chemical and microbial contamination hazards.

Good building air quality enhances the health and comfort condition of the people who live or work within a given building. Failure to respond to building air quality issues may result in the following:

  • Recurring health problems
  • Increased absenteeism resulting in reduced workplace productivity
  • Damage to surrounding furnishings and the premature failing of electrical items
  • Contamination of manufactured products and/or materials
 VQC Building Air Quality Assessment will consist of the following:
  • Ventilation rates –ventilation provides for the dilution of pollutants. In general, increasing the rate at which outdoor air is supplied to the building decreases indoor air problems important. Buildings with high ventilation rates may suffer indoor air problems due to an uneven distribution of air, or insufficient exhaust ventilation.
  • Humidity and temperature - Many factors may affect on humidity level and temperature, such as personal activity and clothing personal comfort. Acceptable relative humidity levels should range from 20 percent to 60 percent year-round. Levels less than 20 percent in the winter and greater than 60 percent in the summer are considered unacceptable.
  • Carbon dioxide levels - Carbon dioxide is a colorless, odorless gas and is a normal constituent of the atmosphere.
  • Carbon monoxide levels – Carbon monoxide is a colorless, odorless, toxic gas that is a product of incomplete combustion.
  • Airborne particulate levels - Particulate matter (PM) is a complex mixture of solid and liquid particles that are suspended in air. These particles typically consist of a mixture of inorganic and organic chemicals, including carbon, sulfates, nitrates, metals, acids, and semi-volatile compounds.
  • Airborne bacteria - Indoor airborne bacteria can loosely be categorized into bacterial pathogens and environmental bacteria associated with water-damaged building materials. Bacterial pathogens are capable of causing severe diseases in humans if inhaled, ingested or if they come into contact with the skin.