An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Indoor Air Quality (IAQ)

Ventilation and Air Quality in Offices

This factsheet discusses the role of mechanical heating, ventilation and air conditioning systems in maintaining indoor air quality of commercial buildings such as offices, stores, and hotels. Topics include health problems associated with poor ventilation, ways of controlling pollution, ventilation standards and building codes, and various ventilation system problems and solutions. Provides measures for resolving air quality problems and sources for additional information. This document is only available online.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.