Exhaust Fans Guide - Version 1.0 The best way to improve air quality inside the home is to have exhaust fans installed. Use this guide to find out all you need to know about exhaust fans.The air quality inside the home should never be ignored. Houses with poor air quality can create health concerns for its inhabitants and ignoring the importance of good air quality can be a fatal mistake. The air quality inside the home can be improved by installing exhaust fans. There are many types of exhaust fans, but the type that can be easily installed are the wall mounted exhaust fans.