If you're not testing, you're guessing... We utilize the latest state of the art monitoring systems (short term and long term) to ensure proper building performance. From temperature, humidity, carbon monoxide, carbon dioxide, hydrogen sulfide, oxygen, formaldehyde and numerous other VOCs, as well as just about any silly experiment that is suggested. Check out some of our monitoring studies such as the Yeti Vs Thermos, Does hot water really freeze faster than cold water and a more serious long term project such as the ongoing monitoring of foam insulated attics.