That dirty, dusty filter in the photo is a common sign your indoor air may need a closer look. Air Quality Testers provides mold testing and indoor air quality testing for homes and buildings in Alameda, Oakland, San Leandro, Fremont, San Francisco, San Mateo, Concord, San Jose, Berkeley, and El Cerrito. If you’re worried about musty smells, allergy symptoms, or a recent leak, we can help with a mold inspection and a clear air quality assessment so you know what’s in the air. We also offer allergens testing when you want to check for common airborne triggers that can build up over time. Planning a renovation or demolition project? We can handle asbestos testing and lead testing, and we can also arrange asbestos air testing when an air check is needed. Schedule online when you’re ready, and you’ll get a straightforward report that helps you understand what can be improved.