Some homes and climates require additional humidification (you read that right, not “de-humidification). But humidifiers have a host of dangers they introduce. To know whether humidification is best for you and your family, read here.
Often we get questions about airborne testing results. Here’s a sample:
Here we see that the exterior sample (#3) serves as the “control” value for the home, while the laundry room (#1) and the master bathroom (#2) are the “experimental” values.
With this understood, interpreting the tables becomes easier. The outdoor air has considerably more total spores (420 to 110 and 44), but the master bathroom air has the “water indicator” spore chaetomium, which indicates a more serious moisture issue in the walls, floor, and/or ceiling.