Over 7 million premature deaths annually are associated with poor air quality worldwide. We also spend over 90% of our time indoors and over 25% of the systems that deliver air into our homes and offices have undiagnosed issues. The current state of affairs is unsustainable. I have been developing add-ons for HVAC systems that measure indoor air quality and alert you when HVAC is malfunctioning as well as notifies you about likely sources of air pollution.