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

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:

Roasting the Home HVAC Industry on National TV: Technicians vs. Mechanics

HVAC technicians will someday be the masters of the science of homes, but right now it's not looking too hot. Hear from Jim Bergmann, one of the world's HVAC legends, why most HVAC installs are wrong from the minute the load calculations are started using Manual J, Manual S, and Manual D without using a blower door first.

Watch the show at https://HomeDiagnosis.tv

Support our work changing the building industry: http://Patreon.com/HomeDiagnosisTV

Start testing your HVAC installs with: https://measurequick.com/

Get your blower door at: https://www.trutechtools.com/system-blower-doors-and-duct-testers.html

Uncomfortable Homes Explained: How Air Sealing, Insulation, HVAC and Thermal Mass Actually Works

From the upcoming Season Two of 'Home Diagnosis': through a 5-day recording of temperature, humidity, and dewpoint with a datalogger, see the actual performance curves of five built environments on our property. Watch the evolution of primitive to advanced built environments, from an open-air workshop to a lived-in high performance home- the effect of air sealing and insulation alone is pretty incredible when you see it like this.

Become a member and help support this show: http://patreon.com/HomeDiagnosisTV

See more about Home Diagnosis TV series: http://HomeDiagnosis.tv

Lighting Design 101: Lumens, Footcandles, Colors, etc with Kichler's Jeff Dross

Jeff Dross is the Director of Education and Industry Trends for Kichler Lighting, and he's been lighting homes for 45 of that company's 82 years. A lot's changed in lighting, but here are some universal basics, along with the latest innovations to consider when planning the lighting system for any house, addition, or room.

See our favorites among the thousands of lighting options we're swimming through HERE

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

Using Infrared to Find Holes in Your House

Corbett Lunsford loves infrared cameras (he has six of them, including this FLIR One Pro) but they're not the whole story. Pair your diagnostic tools to be a mastermind of home performance.

Learn more at http://HomePerformance.training

Helicopter Takeoff in Infrared

Grace Lunsford uses the FLIR T660 to capture the takeoff of a Delaware state trooper chopper. Music by Mysteriam & Bunny Patootie from the album Soundtrack to a Buried World.