Manual J Default Air Leakage Inputs vs. Blower Door Test ACH50

I'm pretty sure the awesome folks who created Manual J (like Hank Rutkowski- hear my interview with him here), and the softwares we use to run the calculations (Elite RHVAC, used here, and Wrightsoft) do not have a lot of personal experience with the test dynamics of home enclosures, and may never have actually used a blower door before. Here's a demonstration of why it's so important to respect the blower door if you're doing HVAC design for residential construction or home improvement.

Learn to perform and analyze Blower Door and Duct Tightness Tests in my 1 Day Training at: https://buildingperformanceworkshop.com/det-verifier

There are two blower door brands, both available at: https://www.trutechtools.com/system-blower-doors-and-duct-testers.html

See a tour of a full Manual J report below:

Podcast 87: Ventilation Codes and What We’re Missing with Joseph Hillenmeyer of Aprilaire

Anybody who has followed this channel knows that ventilation is important in homes- but how much, what kind, and what's enforced or recommended? This guy knows- Joseph Hillenmeyer at Aprilaire is deeply involved in the communities of builders, contractors, testers, and consumers who are impacted by the pieces of ventilation equipment. Here's where we are right now.

Learn more about Aprilaire ventilation systems at: http://Aprilaire.com

To help support our work educating on the science of homes, please become a member: http://Patreon.com/HomeDiagnosisTV