What is an important consideration when testing air for mold?

Testing air for mold is most effective when conducted during normal building occupancy because this represents the usual conditions under which the indoor environment is experienced. Mold spores fluctuate in the air due to factors like human activity, temperature changes, and humidity levels. Conducting tests when the building is occupied better captures the diversity and concentration of mold spores that residents might be exposed to on a regular basis. This is essential for accurately assessing air quality and identifying any potential health risks associated with mold exposure.

Testing after a cleanup may not yield reliable results of mold presence, as the cleanup can temporarily reduce mold levels. Conducting tests only in the morning might overlook variations in mold spore levels throughout the day that can be influenced by activities and environmental factors. Furthermore, while ensuring air filters are clean is good practice for overall air quality, replacing them just before testing does not specifically contribute to an accurate assessment of mold presence in the air at the time of testing.