How to Test HVAC Room Pressurization (Zonal Pressure Testing for HVAC Commissioning)

Using a TEC DG-8 manometer and a Testo 400 hot wire anemometer, Corbett evaluates the HVAC balancing in the home his family built in Atlanta. Keep your room pressures below 3 Pascals if you can, 5 Pascals will start to give you problems- rooms don't receive enough conditioned air, and/or whistling or doors closing from 'ghosts'.

Join our Patreon group and be part of our R&D team: https://Patreon.com/HomeDiagnosisTV

Watch the first ever TV series about the science of homes: https://HomeDiagnosis.tv

How Air Pressure Can Screw Up Your Home: the House of Pressure

Take a tour of the dynamics of home pressure with Jake Nuckolls at the Building Performance Center in Bellingham, WA. This training tool has made the invisible visible for thousands of home performance professionals, and we thought everybody else should get to see it in action too!

Thanks to Jake and the BPC- check them out at: https://buildingperformancecenter.org/

Become a member and help support our work exploring the science of homes: https://Patreon.com/HomeDiagnosisTV

Watch the first ever TV series about the science of homes: https://HomeDiagnosis.tv

Water Heater Safety: Combustion Testing and Inspection in a Home Renovation: Healthy Indoors Minute

Corbett finds an atmospheric draft water heater that's spilling its combustion gases into the home's basement. See the inspection and testing that go into the analysis of how to solve the issue, and learn to protect your clients and your own family in the process. Using a Wohler A450 combustion analyzer, Retrotec DM-32 and Cirrus Wind Indicator, all from https://TruTechTools.com.

See the 'Home Diagnosis' television series: https://HomeDiagnosis.tv

Subscribe to Healthy Indoors and join the worldwide community: http://HealthyIndoors.com

Birth Industry vs. Building Industry: the Science of Placentas Under Pressure and Unrealistic Deadlines

On the occasion of the home birth of our third baby, which became an emergency C-section at a nice hospital, I’d like to draw some parallels that are not talked about a lot. There’s an obvious problem with lack of science in ‘doing things the way they’re always done’, and conversely too much test data makes us lose perspective.

Join the Healthy Indoors Community and subscribe to Healthy Indoors Magazine at: http://HealthyIndoors.com

HVAC Airflow Diagnostics: Testing Carved Grilles for CFM, Velocity, Pressure Drop, and K-Factor

Our longtime friend and Patreon supporter Scott Marner (who manages QA for Illinois' Ameren home performance program) joined me to do some off-label, outside-the-box diagnostics on custom decorative HVAC grilles from Stellar Air Vents (https://stellarairdecorativeventcovers.com/). Just one more example of some non-engineers getting very sophisticated results from a cardboard box, some tape, and several thousand dollars of Retrotec and Testo HVAC testing equipment (https://www.trutechtools.com/). Scott was our FIRST EVER Patreon supporter- join him and become part of our work on this channel and the 'Home Diagnosis' TV series: http://Patreon.com/HomeDiagnosisTV

Testing Our Home's ERV: Ventilation Airflow, Dewpoint Performance, and Grill Balancing

Using a Testo hotwire anemometer and hygrometer, Retrotec FlowBox, and CPS EasyHood, we commission this Fantech SER150 energy recovery ventilator and tune it to our high performance home's (and our family's) needs.

I get all my test tools from the awesome people at: https://TruTechTools.com

Learn more about this ventilation system: http://Fantech.net

How to Design and Install Kitchen Exhaust and Make Up Air Ventilation (Case Study)

Another installment in a series with Healthy Indoors Magazine (http://HealthyIndoors.com) follows the real-life, gritty planning and installation of the make up air system in a 1950's ranch over a crawlspace. The goal here is to install effective ventilation for the kitchen range with an exhaust hood AND make up air that will hopefully be the path of least resistance. We're using a Broan exhaust hood paired with an Aprilaire KV make up air damper, or an 8144NC (in an experimental application, as explained in the video). This house is not airtight by any means, and some might think make up air is overkill in an older home, but obviously we disagree enough to suffer through this.

Learn more about making your home healthier at: http://HealthyIndoors.com

Become a member and support our work educating people about the Science of Homes: http://Patreon.com/HomeDiagnosisTV

Get training or consulting with Corbett directly: http://BuildingPerformanceWorkshop.com

4 Year Old Tests Home Air Leakage

My daughter can find out whether your house will perform well or not- but I got to be her first client. She runs our Retrotec 5000 up to 50Pa and shows off how awesomely airtight our family's forever home will be for the next 100 years.

Get the book on testing homes: https://buildingperformanceworkshop.com/homeperformancediagnosticsbook

See more about the inner airtightness system: https://foursevenfive.com

More about blower door systems: https://retrotec.com

Advanced Home Ventilation: Harnessing Pressure Imbalances

Using his family's home as an example, 'Home Diagnosis' co-host Corbett Lunsford demonstrates several options for configuring the air purification systems and explains how he chose the best setup for his family. Using the Fantech VER200, HEPA filter unit, and Mitsubishi FH09 series mini-split.

More on this build at: https://HomeDiagnosis.tv/atlanta-homestead

Testing a Radon Mitigation System

Corbett teams up with Fantech's aerospace engineer and radon system expert Hamid Massali to prove the radon mitigation field works, and find out how much airflow the radon fan will need to exhaust to maintain safe air quality indoors.

More on this PFEDK system at: https://shop.fantech.net/en-US/pfedk--rn--diagnostic--tool--kit/p401891

More on radon's health impacts at: https://www.cancer.gov/about-cancer/causes-prevention/risk/substances/radon/radon-fact-sheet

Corbett and Grace are not joking around- they will diagnose the crap out of the forever home they're building. Here's another example of creative testing that can tell us secrets about predicting and preventing failures in the indoor physics, chemistry, and microbiology of homes. Check out the Cirrus smoke tool, and others demo'd here: https://www.trutechtools.com/Cirrus-CWI200-Wind-Indicator

More on this house and the TV show at: https://HomeDiagnosis.tv/atlanta-homestead

Cleaning House May Be Bad for Your Family

Home Diagnosis co-host Corbett Lunsford explains why the HOMEChem scientists are saying cleaning might not be the answer for indoor chemistry. Explore the meaning of vacuuming with and without a HEPA filter, and where a central vacuum system should be installed to keep from totally messing up your indoor physics and chemistry. Subscribe to Healthy Indoors Magazine for free at: http://HealthyIndoors.com

Check out this NuTone HEPA central vac system at: http://www.nutone.com/purepower

More on this build at: https://HomeDiagnosis.tv/atlanta-homestead

Teaser for Home Diagnosis Season 1 (eps 3-6)

See bits of four episodes from Home Diagnosis Season 1! More at: https://HomeDiagnosis.tv