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Atlanta, GA

773.398.5288

Advanced residential construction and home improvement consulting and owner's advocacy in Atlanta, using the latest building performance diagnostic and modeling techniques and tools. Airtightness, insulation, HVAC, ventilation, moisture, and air quality and EMF consulting for homeowners and building professionals alike.

Videos/Podcasts/Articles

Home performance articles and stories from the field with internationally respected building forensics guru Corbett Lunsford at the Building Performance Workshop. Hear new episodes of the Building Performance Podcast, see new videos from the Home Performance YouTube channel, and learn all about how diagnostic testing (more than an 'Energy Audit') can make home improvement and new home construction a proven process!

HVAC Replacement: Ditching an Old Furnace and A/C for Mitsubishi Heat Pump with HyperHeat

Corbett Lunsford

My parents' home was due for an HVAC upgrade, so we went with the same system we put in our own forever home- a Mitsubishi P-series ducted heat pump. Here's the whole design and installation process squeezed into about 15 minutes for your education and amusement.

Thanks to Ryan Burrell and Mike Smith, who are sadly no longer at Mitsubishi as of publication of this vid.

Brent Ridley, Mario and Hugo at H&M Services are at: https://handmservicesinc.com/about-us/

See more about HVAC Science: https://www.youtube.com/playlist?list=PLsc2-5fAgMq5yJOp-kliEoYVML8dS1G2f

Watch all the videos in this home's renovation series: https://youtube.com/playlist?list=PLsc2-5fAgMq5hHF5Do4it9Q88Xd0aGhs4&si=l2WtkbimWTYSXQRw

Join our Patreon group and be part of the best year-round building science conference in the world: https://Patreon.com/HomeDiagnosisTV

ERV Inspection, Fixes, and Home Ventilation Advice from a High Mountain Crawlspace

Corbett Lunsford

What happens in a radiant-heated home when the central ventilation system is out of sight and out of mind? These installation mistakes are VERY typical in my experience, so please always double check that every component in the system is selected and installed correctly, from the outdoor vent covers to the ducting to the placement of the unit for ease of maintenance.

Check out my deep dive course on Ventilation Design and Installation: https://buildingperformanceworkshop.com/ventilation

Join our Patreon team and be part of the longest-running monthly applied building science conference in the world: https://Patreon.com/HomeDiagnosisTV

Learn TONS more about ventilation with ERVs and all the other types of machinery here: https://www.youtube.com/playlist?list=PLsc2-5fAgMq4znTQKHdqvYKOhH-w05UJe

See more home performance from around the world here: https://www.youtube.com/playlist?list=PLsc2-5fAgMq4I_Bjpvmb1Z39Y0uEMGEC9

High Mountain Homes: Mud Room Arrangements, Drying Room, Roof and HVAC Tips

Corbett Lunsford

Homes at high elevations in deep snow have special needs, and here are some of the differences I noticed at first- deeper look into the ventilation system in this house in the next video.

Join our Patreon team and be part of the longest-running monthly applied building science conference in the world: https://Patreon.com/HomeDiagnosisTV

Take my deep dive Ventilation Design & Installation Course: https://buildingperformanceworkshop.com/ventilation

See more home performance from around the world here: https://www.youtube.com/playlist?list=PLsc2-5fAgMq4I_Bjpvmb1Z39Y0uEMGEC9

HVAC Design Demo: Humidity Control across the USA using Weather Data from ASHRAE-meteo.info

Corbett Lunsford

Using my favorite weather data tool (http://ashrae-meteo.info), I demonstrate some of the ins and outs of actual historical humidity data from 'sunny' Florida, 'frigid' Minnesota, 'dry heat' Arizona, and the 'Rocky' Mountains. Hope you enjoy the nerd out as much as I do.

I donated to the guy who runs the site, and I hope you do too!

Join our team and become part of our ongoing conference on applied building science: https://Patreon.com/HomeDiagnosisTV

Download my print-ready Psychrometric Wheel Calculator at: https://buildingperformanceworkshop.com/ventilation

Here are the specific weather stations we look at in the video:

KEY WEST, FL: http://ashrae-meteo.info/v2.0/?lat=24.5537&lng=-81.7879&place=%27%27&wmo=722010&si_ip=IP&ashrae_version=2021

MINNEAPOLIS, MN: http://ashrae-meteo.info/v2.0/?lat=45.062&lng=-93.351&place=%27%27&wmo=726575&si_ip=IP&ashrae_version=2021

PHOENIX, AZ: http://ashrae-meteo.info/v2.0/?lat=33.417&lng=-112.683&place=%27%27&wmo=720644&si_ip=IP&ashrae_version=2021

BOULDER, CO: http://ashrae-meteo.info/v2.0/?lat=40.0354&lng=-105.5409&place=%27%27&wmo=745200&si_ip=IP&ashrae_version=2021

HOW TO NOT GET SCREWED: Advice for Renters/Mobile Homes/Insurance/Lawsuits: Ep 311 of HOME DIAGNOSIS

Corbett Lunsford

Are we doing a good job preparing for, and recovering from disasters? Whether it’s a personal disaster with physics, chemistry or microbiology in your own home, or floods and fires that cross state lines, it’s become clear to us the answer is: we could do better. There are some problems baked into the system of disaster preparedness and recovery itself- in renting vs. owning property, insurance claims, lawsuits and even mobile home construction standards (sounds boring, is definitely not). Let’s talk about why the problems exist, how to avoid them, and what to do if you need to fight for your family’s future in a safe and healthy home.

Join our team and keep this show independent: https://Patreon.com/HomeDiagnosisTV

Featured researchers and experts: 

Lori Peek, Social Scientist at University of Colorado- Boulder

Andrew Whelton, Water Safety Researcher at Purdue University

Elaina Sutley, Disaster Resilience Researcher at Kansas State University

Jennifer Bridge, Disaster Resilience Researcher at University of Florida

Bill Lazar, Executive Director at St. Johns Housing Partnership (https://www.sjhp.org/)

Susan Giddens, Affordable Rehab Manager at St. Johns Housing Partnership

Anil Mittal, Moldy Home Survivor in Houston TX

Trey Flournoy, Property Insurance Attorney

Also featuring lots of footage courtesy of Creative Commons and the US DOD. The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement.  

Dive deeper at: https://HomeDiagnosis.tv/episode-311-equal-opportunity-disaster

Kitchen Ventilation System Inspection 3 YEARS IN: Under-Counter Make Up Air & Greasy Duct Silencer

Corbett Lunsford

A lot of our audience have been asking about how our high performance forever home in Atlanta is 'holding up'. Had quite a few challenges about this kitchen exhaust system (which has a mineral wool silencer built in) and the make up air under the cabinets (which breaks one of my own rules about make up air placement). Here's your peek behind the scenes of our building science experiment after 3 years of hard living with 3 kids and 2 cats.

Join our Patreon team and be part of the longest-running monthly applied building science conference in the world: https://Patreon.com/HomeDiagnosisTV

See the original install videos here:

Airtight Home Ventilation for the 21st Century with Fantech: Kitchen Exhaust, Make Up Air, Radon etc

https://youtu.be/fOTJmUhghIo

How to Install a Fantech Kitchen Exhaust Hood Liner

https://youtu.be/h7eXuwkfDm0

How to Design, Install, and Test a Perfect Kitchen Exhaust and Make Up Air System

https://youtu.be/bMkvCn1sGvk

3 Rules for Kitchen Make Up Air Systems: HVAC Training for Home Ventilation that Performs

https://youtu.be/36eMZNyAlGY

Massive Mistakes in Make Up Air for Homes

Corbett Lunsford

After having several clients and colleagues majorly underestimate the amount of dampered make up ducts needed to relieve the suction pressure of kitchen fans on an airtight home, I decided we need to talk about this again. Here's the ins and outs of Broan's Make Up Air Damper Calculator (at https://www.broan-nutone.com/en-us/home/specifier-tools), and how weird it turns out if you use SIMPLIFIED inputs instead of DETAILED inputs.

Take my amazing self-paced Ventilation Design & Install course: https://buildingperformanceworkshop.com/ventilation

Consult with me on your own project: https://buildingperformanceworkshop.com/video-consulting

Watch the world's first TV series on the Science of Homes: https://HomeDiagnosis.tv

Science of Sick Building Syndrome & Environmental Sensitivity- Ep 307 of HOME DIAGNOSIS TV Series

Corbett Lunsford

Whether it's named MCS, CIRS, MCAS, etc, the phenomenon of people becoming over-sensitized to their environment is a very real and very painful thing. Let's dig into the science we know for sure- and the cleaning, maintenance, and material selections that can help unaffected families stay that way.

Join our Patreon team and be part of the exploration of the Science of Homes: https://Patreon.com/HomeDiagnosisTV

Featured researchers and experts:
Charles Weschler- Atmospheric Chemist at Rutgers University
Anil & Nilima Mittal- Moldy Home Survivors
Jeffrey Siegel- Indoor Air Quality Researcher at University of Toronto
John Downey- Exec. Dir. of Cleaning Industry Research Institute (CIRI)
Chris Wilson- Dallas Homeowner Doing Renovations
Miriam Diamond- Environmental Chemist at University of Toronto
James Scott- Mycologist at University of Toronto and http://www.sporometrics.com/
Corinne Segura- Healthy Materials Specifier at https://www.mychemicalfreehouse.net/
Atila Novoselac- Building Scientist at University of Texas at Austin
Andrew Whelton- Water Safety Researcher at Purdue University
Jason Earle- Mold Inspector
Karen Dannemiller- Environmental Engineer at Ohio State University
Marc Webb- Environmental Chemist at University of North Carolina
Barb Turpin- Environmental Chemist at University of North Carolina

Also featuring chemistry visualizations by Kamil Czapiga (https://Cosmodernism.com) and lots of footage courtesy of Creative Commons and the US DOD. The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement.

Dive deeper at: https://HomeDiagnosis.tv/episode-307-whats-that-smell

Home Disasters: Earthquakes, Landslides, Sinkholes, and What To Do- Ep 306 of HOME DIAGNOSIS

Corbett Lunsford

An exploration of the natural phenomena around our homes that are unexpectedly hard or soft- hail, landslides, liquefaction of the ground during earthquakes, and the research around all of these.

Join our Patreon team and be part of the exploration of the Science of Homes: https://Patreon.com/HomeDiagnosisTV

Featured researchers and experts:
Joseph Wartman- Disaster Resilience Researcher at University of Washington
Elaina Sutley- Disaster Resilience Researcher at Kansas State University
Ian Robertson- Disaster Resilience Researcher at University of Hawaii
Koorosh Lotfizadeh- Earthquake Researcher at UC San Diego
Pedro Lomonaco- Coastal Engineering Researcher at Oregon State University
Dan Wilson- Geotechnical Researcher at UC Davis
Ross Boulanger- Geotechnical Researcher at UC Davis
Jason DeJong- Biogeotechnical Researcher at UC Davis
Anne Cope- Chief Engineer at IBHS
Trey Flournoy- Property Insurance Attorney

Also featuring the UCSD Shake Table (https://se.ucsd.edu/facilities/englekirk-structural-engineering-center), the UC Davis Centrifuge (https://cgm.engr.ucdavis.edu/facility/9-m-centrifuge/), and IBHS (https://ibhs.org), and lots of footage courtesy of Creative Commons and the US DOD. The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement.

Dive deeper at: https://HomeDiagnosis.tv/episode-306-rock-hard

Beware of Air Purifiers, Miracle Products, & Quick Fixes- Ep 305 of HOME DIAGNOSIS

Corbett Lunsford

In trying to fix our problems, are we actually just rearranging them? For every product advertised to fix something in your home, there is its shadow- the byproduct you might not suspect. Every home is a system, and all the parts interact through physics, chemistry, and microbiology- but since we can’t predict the specific combination of products in your home, we can’t predict their interactions. But there are ways to buy, and even build, in a less chaotic way, that gives us more control over the hazards we face every day.
Join our Patreon team and become part of the frontier of the Science of Homes: https://Patreon.com/HomeDiagnosisTV

Featured researchers and experts:
Jeffrey Siegel- Air Quality Researcher at University of Toronto
Rich Corsi- OG Indoor Air Quality Researcher, now at UC Davis
Scott True- Homebuilder at Dimora Homes (https://dimorahomes.com/)
Sheridan Reed- Owner of a high performance Dimora Home
Lisa Ng- Building Scientist at NIST
Karen Dannemiller- Environmental Engineer at Ohio State University
Elliott Gall- Air Quality Researcher at Portland State University
Arthur Chan- Environmental Researcher at University of Toronto
Rob Krug- Cybersecurity Engineer

Also featuring lots of footage courtesy of Creative Commons licensing on Flickr and from the US DOD. The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement.

Dive deeper at: https://HomeDiagnosis.tv/episode-305-there-i-fixed-it

Science of Home Flooding, Hurricanes, Tsunamis, & Tornadoes - Ep 304 of HOME DIAGNOSIS TV Series

Corbett Lunsford

What happens in a home that's flooded, hit by waves, pushed over or twisted by tornadoes and hurricanes? The chemistry, microbiology and physics is a LOT more interesting than the simple soundbites we typically hear.

Featured researchers and experts:
Delphine Farmer- Atmospheric Chemist at Colorado State University
Elaina Sutley- Disaster Resilience Researcher at Kansas State University
Anne Cope- Chief Engineer at IBHS
Chris Wilson- Tornado Survivor
Pedro Lomonaco- Coastal Engineering Researcher at Oregon State University
Ian Robertson- Disaster Resilience Researcher at University of Hawaii
Mark & Carol Slegers- Owners of a Floating Home

Also featuring the OSU Hinsdale Wave Research Lab, the FIU Wall of Wind, the NIST Net-Zero Test House, and IBHS, and lots of footage courtesy of Creative Commons and the US DOD. The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement.

Dive deeper at: https://HomeDiagnosis.tv/episode-304-like-a-hurricane