Join the Cult of Home Performance on Patreon

Friends, we have taken our membership to the next level. As of release of this video, we have 70 Patreon members, and we'd love to have you join us, to get to know you too! Details at:

https://patreon.com/HomeDiagnosisTV

$5/month:
All Home Diagnosis Patrons receive access to:
-Early Access to all YouTube and TV content
-Upcoming & past live stream Q&A /Hangouts with Grace & Corbett
-Patreon community message board

$15/month:
For the price of buying us a drink, you'll receive:
-10% discount once a month for one-on-one consulting with Corbett
-ALL rewards from lower tiers

$30/month:
At the dollar-a-day level you will receive:
-BOTH of our online trainings ‘Home Performance for Tiny Spaces’ and ‘Home Performance Crash Course’ ($58 Value)
-10% OFF any service or product we offer
-Your questions answered: on the Building Performance Podcast we answer questions from our audience, but at this level your questions get priority
-ALL rewards from lower tiers

$50/month:
For the price of a dinner date you will receive:
-Special Training/Tool & Technique Demonstration Videos per your request
-The full color PDF edition of our book, Home Performance Diagnostics ($69 value)
-Free monthly group coaching with Corbett via Zoom ($100 value each month)
-Live access to other group coachings with Corbett, with Q&A
-ALL rewards from previous tiers

Join today for immediate access! https://patreon.com/HomeDiagnosisTV

‘Quick’ Tour of NEW DISCOVERIES About Chemistry of Indoor Environments

Grace was invited to the National Academy of Sciences for the grand unveiling of all the data found through the HOMEChem and CASA experiments, and the MOCCIE modeling consortium.

We now have a TON of new questions that researchers will be chasing answers to over the coming decades, and if you're subscribed to this channel you're in the right place to hear the stories of what this all means.

There are many scientific papers on how dangerous chemistry-based air cleaners can be. Here are some:

https://www.mdpi.com/2673-4672/2/2/10

https://www.sciencedirect.com/science/article/abs/pii/S0360132322001044

https://www.sciencedirect.com/science/article/pii/S036013232100158X

There are lots of others. Having said that, we’re not sure that technical papers are necessarily useful. They tend to target a single device and so a manufacturer can always say that their device is different than the one that is tested. They also aren’t easy reading.

You might find some of the webinars that people have done to be better sources. Here are some:

https://built-envi.com/wp-content/uploads/Navigating-the-Landscape-of-Air-Cleaning-Tech-for-COVID-19_Final-for-EPA_dist.pdf

https://www.epa.gov/indoor-air-quality-iaq/webinars-meetings-and-updates#https://youtu.be/tgyl7ftvpnw

If you google on the names above as well as our all-time hero Jeffrey Siegel, you will find a bunch more.

Learn LOTS more about other topics in this vid at the HOMEChem playlist: https://www.youtube.com/playlist?list=PLsc2-5fAgMq7fRE6q0uWx-2F_EqBd4S_n

Watch the first TV series ever about the Science of Homes: https://HomeDiagnosis.tv

JOIN OUR TEAM and get awesome behind the scenes access to us and our work: https://Patreon.com/HomeDiagnosisTV

The Scientists of CIE's HOMEChem and CASA (Biggest IAQ Experiments Ever)

Meet the very nice, wicked smart people who made the chemistry and microbiology experiements at HOMEChem and CASA work.

Learn about this $40 million 10-year project’s research findings at: https://sloan.org/programs/completed-programs/chemistry-of-indoor-environments

TEASER for 'Home Diagnosis' Season 3: Accidents Happen

We can't wait to share season 3 of our PBS series 'Home Diagnosis' with you all! Coming this winter, see lots more at: https://homediagnosis.tv/season-3

Be part of our team and get exclusive access to us as we finish out the show: https://Patreon.com/HomeDiagnosisTV

Photos by Peter Essick: https://www.peteressick.com/aerials

The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement.

Goodbye for Now: 3 Month TV Hiatus

See you all again in October, once we have Season 3 of Home Diagnosis wrapped up and ready to air around the holidays: https://HomeDiagnosis.tv

If you'd like to be able to reach us and get continuing consulting, consider joining our Patreon group: https://Patreon.com/HomeDiagnosisTV

The List of HVAC Installers Who Respect Science and Math

Welcome to The List. It's free to view, free to be listed on, I have no interest in stealing anyone's information or making a few bucks on a kickback:

https://homediagnosis.tv/hvac-installers

I've had people from Alaska to Manhattan asking where to find an HVAC installer who even understands how to read a Manual J calculation, and just assuring them that 'they're out there' is getting boring. Here is a FREE directory of those people, SELF-SELECTED. I am NOT vetting them. They vet themselves.

Good luck to us all.

Manual D Duct Design with Alex Meaney

We're back again with my HVAC design calculations trainer Alex Meaney (https://MeanHVAC.com), to talk about duct design calculations, the Manual D and ASHRAE ways. Thanks to Southwark Metal (https://www.southwarkmetal.com/) for the sweet training posters.

Psychrometric Wheel Calculator: Free Download

This slide rule has helped me hundreds of times in my work designing ventilation systems and tuning the science of homes. Hope it works for you too- just print the two letter-sized panels (heavier paper is better), laminate if desired, and pop a center pin through to make it spin. Happy testing.

Corbett

Different Room Temperatures & Outdoor Design Setpoints: Alex Meaney and Dustin Cole GO OFF

Why do people ask for specific HVAC stuff, and do they really need what they're asking for? Let's dive deep into the design and installation of non-mainstream HVAC requests, like different target room temperatures in a home, or outdoor design temperatures that are higher than the 99% hottest we normally use.

See Dustin Cole's interview at: https://youtu.be/1Iiho2cm2LY

Find Dustin at his family business Cole Air: https://www.airconditioninglakecharles.com/

Alex Meaney has made several videos with me so far:
Manual J Deep Dive https://www.youtube.com/watch?v=LEKEMI05dJE
Manual S Deep Dive https://www.youtube.com/watch?v=LGhE4XwbDDE
Duct Design and Existing Home System Replacements https://youtu.be/h5629tWpR9c

Find Alex at: https://MeanHVAC.com

See how HVAC pressures can affect rooms when the doors are closed: https://www.youtube.com/watch?v=orp-sXTjTPw

Borderline of Balanced Ventilation: When Bath Fans Won't Work, and an ERV Becomes Necessary at Home

We almost never recommend that our clients go with Energy Recovery Ventilators (ERVs) for efficiency reasons- it always comes down to the air tightness of the home. At a certain point, bath fans all over the home stop being helpful and actually become a serious liability for indoor pollution, humidity control, and predictions of performance overall. Let's dive into the free online calculator (https://www.redcalc.com/depressurization-analysis/) that I use in most of my consultations, and how to evaluate the numbers it generates.

Take my Ventilation Training and learn all that I know about this complex topic: https://buildingperformanceworkshop.com/ventilation

Get trained and certified by me to run blower door and duct testing: https://buildingperformanceworkshop.com/det-verifier

Duct Design Tips & Replacing Furnaces with Heat Pumps with Alex Meaney

We're back again with my HVAC design calculations trainer Alex Meaney (https://MeanHVAC.com), to talk about ductwork and connections and filters and how to get all this right when replacing an old system in existing homes.

Watch my first two videos with Alex: Manual J Load Calculation https://www.youtube.com/watch?v=LEKEMI05dJE

Manual S Equipment Selection https://www.youtube.com/watch?v=LGhE4XwbDDE

Not Everyone Needs Continuous Insulation, but Here's My FAVORITE Thing about it

Some people can get really freaky about 'thermal bridging', and while I do think much of the discussion about it is way out of proportion, there is a reasoned approach when it comes to continuous insulation. Here's my take on the #1 reason to consider exterior continuous insulation on any project. See how we used Rockwool to turn our home into one of the most comfortable homes in the country: https://homediagnosis.tv/episode-206-windbreakers-air-sealing-and-insulation

Learn more about exterior insulation approaches: https://www.rockwool.com/north-america/products-and-applications/external-wall-insulation/

Get 1-on-1 help with any home: https://buildingperformanceworkshop.com/video-consulting