People in developed countries spend the majority of their time indoors. Therefore, studying the effect of outdoor air quality on indoor air is of great importance to human health. This book presents several computer models that can be used to study this effect, analysis methods using these models, as well as measurement techniques and control strategies. Use of these tools is demonstrated using buildings in Fairbanks, Alaska, and pollutants of concern in this area - carbon monoxide, fine particulate matter, and radon. The results are presented together with the summary of findings by others...