How often should you test indoor air quality?

2 Type of building

The type of building you occupy also affects how often you should test indoor air quality. Different buildings have different sources and levels of indoor air pollutants, depending on their age, design, construction, maintenance, and use. For example, older buildings may have more issues with asbestos, lead, or radon, while newer buildings may have more problems with volatile organic compounds (VOCs) from paints, carpets, or furniture. Similarly, buildings that host specific activities, such as hospitals, schools, or industrial facilities, may have higher risks of exposure to infectious agents, allergens, or chemicals.

3 Standards and regulations

Another factor to consider is whether you need to comply with any standards or regulations regarding indoor air quality. Depending on your location, industry, and type of building, you may be required to follow certain guidelines or codes that specify how often and how to test indoor air quality. For example, in the US, the Occupational Safety and Health Administration (OSHA) has standards for some indoor air contaminants, such as asbestos, carbon monoxide, and formaldehyde. You may also need to follow the recommendations of professional associations, such as the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), which provide best practices for indoor air quality.

4 Testing methods and frequency

The final factor to consider is how to test indoor air quality and how often to do it. There are different methods and tools available for testing indoor air quality, ranging from simple visual inspections and surveys to sophisticated instruments and laboratory analysis. The method you choose depends on your purpose, budget, and expertise. Some methods can be done by yourself, while others require professional assistance. The frequency of testing also depends on your situation and goals. Some experts suggest testing indoor air quality at least once a year, while others recommend testing more often if there are changes in the building, such as renovations, repairs, or new occupants.

Testing indoor air quality is an important part of maintaining a healthy and comfortable indoor environment. By considering the factors above, you can decide how often you should test indoor air quality and what method to use. By doing so, you can improve the well-being and performance of yourself and others in your building.

5 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?