Indoor Air Quality (08-12-21)

Licina and Langer compare indoor air quality and satisfaction in different contexts.  They report that they “quantitatively compared IAQ [indoor air quality] results before and after relocation to two WELL-certified office buildings using the same cohort of occupants. Physical measures included integrated samples of TVOC, individual VOC, formaldehyde, and acetaldehyde, NO2, SO2, Oand longitudinal records of CO2 and size-resolved particles. Complementary survey responses about satisfaction with IAQ and thermal comfort were collected. . . . For the majority of air pollutants, there was no significant concentration difference between non-WELL and WELL buildings, but not always. The WELL-certified buildings had substantially higher levels of TVOC and individual VOC associated with paints, especially shortly after the relocation. However, there was statistically significant improvement in IAQ satisfaction after relocation into WELL buildings regardless of the air pollution levels, possibly confounded by thermal environment, awareness of the WELL certification or other non-measurable factors.”

Dusan Licina and Sarka Langer.  2021. “Indoor Air Quality Investigation Before and After Relocation to WELL-Certified Office Buildings.”  Building and Environment, vol. 204, 108182,