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Home Diagnosis is the first-ever television series about measured home performance and building science. Grace and Corbett Lunsford use performance testing tools like infrared thermal cameras, blower doors, pressure gauges, and contaminant sensors to diagnose homes with mystery problems across America. The show also features the #TinyLab, the world's highest performance tiny house on wheels, which toured 13,000 miles to 34 cities on the Proof Is Possible Tour in 2016-17.


If you're a building professional in today's fast-evolving construction and home improvement industry, then you've probably found yourself wondering a few things:

  • How can I prove my work is better than my competition’s? 

  • How do I pinpoint the cause of building failures? 

  • Why do the tests work, and how do I explain them to clients? 

  • What quality control methods should I use? 

  • Which tools will make my job faster and easier?

With this book, experienced and new pros alike will get step-by-step details on advanced testing, complete with:

  • Best practices, important concepts and pitfalls

  • How to present data to the client

  • Step-by-step photographs

  • Time-saving tips


"Destined to be one of those 'foundational' works for our profession, like the Builder’s Guides from EEBA. You ought to own this book." ~Don Hynek, Home Energy Magazine

"So clear and direct. My own attempts to focus on testing have been cluttered by comparison." ~Jim Fitzgerald, Center for Energy and Environment

"...a clear and concise process for performing virtually every diagnostic test... I highly recommend that everyone in the building performance industry buy a copy and use it!" ~Brett Dillon, IBS Advisors, Chair of RESNET Technical Committee

"With this colorful publication, Corbett explains both verbally and in color photos what it takes to solve the riddles of how the home functions as a system. This is set to become coveted both as a field manual for its content and a 'coffee table book' for the photo depictions." ~Mike Gorman, TechKnowledge