Feb 27, 2025
Today Corbett talks about the details of spray foam insulation with Michael Dynna of the Spray Jones YouTube channel. Michael has been a spray foam contractor since 2002, and is enthusiastically educating everyone in the building industry, as well as normal homeowners, about what can go right and wrong with open and...
May 2, 2024
Today Corbett goes down a new rabbit hole in healthy homes, with the many compounds that contain lead, which we are still being sold in shops and groceries at this very moment. Learn how to identify lead-containing consumer products and parts of your home with Eric Ritter's new DIY lighting fast DIY Lead Test Kit (
Mar 21, 2024
Today we talk with HVAC design legend Russ King (https://kwikmodel.com) about how to trim the fat out of heat load calculations in Manual J (and how you sometimes can't), along with fine points on duct design, grille selections, and a brand new movement in software to help homeowners perform their own load calculations...
May 24, 2022
Today Corbett drills down into the details of high-resolution, long-lasting testing trackers called 'dataloggers' with Paul Gannett, an engineer at HOBO by Onset. These days we can track the temperature, humidity, carbon dioxide (CO2), light levels, electrical load, and so much more with these instruments that...
Sep 20, 2021
Today Corbett dives deep into the science of using HVAC to control indoor air quality (IAQ) with Dr. Jeffrey Siegel, professor of civil engineering at the University of Toronto. Jeff is named in over a hundred scientific studies published in this topic, and over the 45 minutes he blows conventional wisdom out of the...