ERV for Bath Exhaust & in Cold Climates: FAIL or WIN from the Ventilation Manufacturers

Hear it from the people who manufacture fresh air systems, not just from me. ERVs are for very airtight homes (under 2ach50) to balance the exhaust air from pollution sources inside. Download our universal ventilation layout concept at: https://buildingperformanceworkshop.com/s/BPW-PerformanceVentilationLayout.pdf

Thanks to:
Nick Agopian, Renewaire (https://Renewaire.com)
Travis Rasch, Broan-Nutone (https://Broan.com)
Bruno Poitras, Fantech (https://Fantech.net)
Ken Nelson, Panasonic (https://Panasonic.com)
Szabi Fekete, Zehnder (https://ZehnderAmerica.com)

1:16 Continuity of Balanced Ventilation
2:23 Sizing Considerations
3:36 International Mechanical Code Minimum for Continuous Ventilation Airflow
5:04 Boost Mode
6:27 ERVs in Cold Climates
10:12 ERV vs. Dehumidifier

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

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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

Tips for HVAC Quality Control Targets and Specs for Builders and Contractors

Controlling a home's performance is pretty simple as an idea: set targets, and verify that they were met. In reality, it's a lot more complex, which is why we need to talk about the foundations for thinking through what quality control methods you'll need to use to achieve your specific goals for the specific home where a specific family will live.

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

The 3 rules are: don't blow make up air on people, don't blow it on surfaces, and keep the circuit short.

See our own full kitchen exhaust and make up system at: https://www.youtube.com/watch?v=bMkvCn1sGvk

See a demo of the calculators for sizing and selecting make up air at: https://www.youtube.com/watch?v=CSmwDGxtlHU

Airtight Home Ventilation: Where to Place ERV Exhaust and Supply Grilles

I only recommend ERVs for very airtight homes (less than 2 ACH50), and in those cases balanced ventilation is the ONLY way to exhaust from bathrooms. More coming on that for those who are scratching their heads. If you DO need an ERV or HRV (hear the difference at https://www.youtube.com/watch?v=QOe4lluGwCg) then where do you put the supply and exhaust ports? How many CFM should they each push and pull? Here's my simple breakdown of what you'll need to consider.

Learn more about home ventilation at: https://buildingperformanceworkshop.com/ventilation

Tips for High Performance Home Floorplan: Designing Out Condensation, Odors, Discomfort, and Hassle

There are so many simple tricks you can incorporate into a home's layout that will improve performance, including closet orientations, bathtub and toilet locations, mechanical shafts, room arrangements, and useful buffer spaces.

HVAC Reality Check: Are Duct Systems Dumb or Essential?

Just wanted to spell out why central duct systems are a central part of ANY home design. Yes, ductless mini split heat pumps are awesome. Yes, radiant flooring is comfy. Yes, lots of people use decentralized HVAC strategies around the world and are happy with them (or at least they don't know what they're missing). Duct systems can be used to filter and deliver healthy air to every room in the house- humidified/dehumidified, diluted with outdoor air, and pressure relieved for kitchen exhaust. Learn more about designing ventilation and HVAC in general at: https://BuildingPerformanceWorkshop.com Watch the first TV series about the Science of Homes: https://HomeDiagnosis.tv

How to Hide HVAC Grilles and Replace Your A/C Faster

My friends, DO NOT DO THIS. Friends don't let friends put HVAC grilles, especially the central return grille, anywhere a couch might end up backing up against it. Ceilings, great. High wall, fine. Floor, not so great but probably better than this. Learn more about HVAC performance by subscribing to our channel and joining our Patreon membership: https://Patreon.com/HomeDiagnosisTV

Mold House Tour and Scientific Causes: Disaster Production Home Build in Houston Texas

Meet our friends Anil and Nilima Mittal- they're suing the biggest production home builder in the USA. With help from Jason Earle, 20-year mold inspection veteran, we tell the story of how this mold disaster of a brand new home began, and how their health has suffered because of it.

Get your own simple mold test: https://GotMold.com

Become supporters of our work, just like Anil, and join our Patreon group for as little as $5/month! https://Patreon.com/homediagnosistv

HERE’S A SEPARATE VIDEO WITH ANIL’S TIPS AND TRICKS ON THE LAWSUIT ALONE:

First DIY Tiny House on Wheels? Tour this Self-Built THOW Motor Home

Welcome to Pioneer Village in Minden Nebraska, where they have one of everything. This place is a picker's wet dream. We'll stick to Wendell Turner's 1950 DIY truck conversion to a motor home, before motor homes were a manufactured product. See the awesome things he got right for performance, along with a lot of the kooky things you tend to see in unique tiny homes the world over.

Learn more about our TinyLab, the world's highest performance tiny house on wheels: https://www.youtube.com/playlist?list=PLsc2-5fAgMq51-6Gwm3m7HXjRhgt9X7RK

Learn to tune the performance of any tiny home in our online course: https://buildingperformanceworkshop.com/tinyspaces

Tearing a Historic Home Foundation Apart- Pouring a Passive House Concrete Slab and Shotcrete Wall

Our friends, Builder Matt Hoots (https://www.youtube.com/@sawhorsedesignbuild) and architect Chris Laumer-Giddens (https://www.youtube.com/@LGSquared) have made lots of progress on the 1920's Passive House Retrofit since our initial blower door test, the leakiest test I've ever seen. See and hear the details of how this is working, and what's to come down the road for this project.

Here was the blower door test before they started the renovation:

Where Best to Put Ventilation Intakes? ERV, HRV, Supply and Intermittent Exhaust Vent Terminals

The maintenance of homes just doesn't stop, whether it's a high performance home or not. There are too many variables between family behaviors, between homes, between neighborhoods and climates that you just can't predict everything. Tweaks must be made. Here's a quick demonstration of HOW and WHY to clean the ERV or HRV outside ventilation terminals, as well as a quick modification of the insect screen on these 8" round duct hoods.

More on this home at: https://homediagnosis.tv/atlanta-homestead