Indoor air contaminants can originate within a building or be imported from outdoors. If contaminant sources are not controlled, IAQ problems can arise, even if the heating, ventilating and air-conditioning (HVAC) system is properly designed and well-maintained.

The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) has developed strategies and objectives for overall indoor air quality. The ASHRAE objectives that can be influenced by custodial activities, maintenance and renovation are:

  • Control moisture in building assemblies;
  • Limit entry of outdoor contaminants;
  • Control moisture and contaminants related to mechanical systems;
  • Limit contaminants from indoor sources;
  • Capture and exhaust contaminants from building equipment and activities; and
  • Reduce contaminant concentrations through ventilation, filtration, and air cleaning.

To learn more about Custodial Activities, Maintenance, Repair and Renovation in relation to indoor air quality (IAQ) visit: