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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.


Home Diagnosis Season 1 follows the #TinyLab on the Proof Is Possible Tour through 6 cities. Grace and Corbett Lunsford use home performance diagnostics to help homeowners prioritize and plan home improvements, pinpoint the source of mystery problems, and prove they get what they paid for in construction.

Renovation Review

To begin Season 1, Grace and Corbett drive the #TinyLab to a big, beautiful, freshly renovated house in Chicago to help their client Ava solve her complex and unexpected issues with air quality and comfort.

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Trust Your Nose

The world's highest performance tiny house on wheels next visits a 1960's home that's not what it seems. Mia has been told that her mind is playing tricks on her, or that she should wear a facemask, in response to her insistence that she can smell the attic or the crawlspace. Grace and Corbett do the scientific testing and find out for sure.

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To Flip or Flee?

Grace and Corbett drive the #TinyLab a split-level ranch that hasn't been updated in decades. Ken is a retiree who's living alone now, and the house is just too big. His daughter thinks they could easily upgrade the performance to earn more when they sell- but they want hard facts, not just a hunch.

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1600's Versus #TinyLab

Grace and Corbett park the #TinyLab next to the oldest building in New York City, the Wyckoff House Museum. They test the two DIY tiny homes side by side, and explore what homeowners expected from home performance in 1650 compared to present day.

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Home is Where the Heat Is

In an All-American suburb, Grace and Corbett test a typical house from the 80's, which has some very common (and some very uncommon) issues with performance.

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Not Your Average Homeowner

Grace and Corbett analyze the performance of the most complex house they've ever tested. It has eight aquariums, two sunspaces, an indoor pool, two crawlspaces, two basements, two garages, and an industrial heating and cooling system. And it all performs according to design (because of the magic ingredient- his name is Matt).