Indoor Air Quality & HVAC Systems

Is Your Home Making You Sick? Unlock the Secrets to a Healthy, Efficient, and Comfortable Indoor Environment.

The COVID-19 pandemic revealed a hard truth: our indoor environments are more critical to our health and sanity than we ever realized. Yet most HVAC systems are fundamentally misdesigned, operating only at peak extremes, leaving you unprotected and uncomfortable the rest of the time.

In this revealing book, veteran indoor environmental researcher Sean Henry Hansen draws on 30 years of experience to challenge the status quo. He offers a revolutionary perspective that connects the dots between your home's enclosure, its mechanical systems, and the well-being of everyone inside.

Inside, you'll learn:

The Occupant Environment: How physical, psychological, and social factors shape your indoor space. The Building Enclosure's Role: Why your walls, windows, and roof are the first line of defense for air quality. The Load Calculation Lie: How outdated sizing methods leave your system ineffective for 8,759 hours a year. The NetZero Pathway: How to approach a home that is energy-efficient, healthy, and resilient. The Truth about IAQ "Solutions": A critical look at UV lights, ozone generators, and air filters—what works, what's hype, and what's hazardous.

Whether you're a homeowner seeking to understand your space, a budding technician, or a seasoned pro questioning conventional wisdom, this book is your essential guide. Stop relying on rules of thumb and start building a foundational understanding of how to create exceptional indoor environments.