Learn the science of homes the invisible dynamics of physics, chemistry, and microbiology at work around us indoors every day. Corbett and Grace Lunsford create the TV series 'Home Diagnosis' and scientific home improvement and construction testing videos for homeowners and home performance professionals alike. See the diagnostic tools and building performance testing used to improve home performance, comfort, air quality, durability, and energy efficiency. Watch energy audits, infrared thermography, blower door testing, HVAC diagnostics, and awesome and weird things from our field work as home performance experts. PROOF IS POSSIBLE. STOP GUESSING.