Corbett Lunsford Archives

Corbett Lunsford

Corbett Lunsford is an expert in home performance diagnostics, specializing in building science, ventilation design, and advanced home testing, with extensive experience in optimizing the invisible dynamics of home environments—including physics, chemistry, and microbiology—and applying this knowledge to projects like high-performance homes and educational content, with a focus in the session on designing ventilation systems that incorporate circulation, filtration, humidity control, dilution, and pressure relief.

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The Heating Sequence of Operations and Onions

Just like Shrek, I like to think about the heating sequence of operations as an onion—it has layers. And each layer builds upon the previous one. We have written previously in great detail about gas furnaces, from top to bottom. I want to focus today on why there is a sequence of operations and how […]

Electronic Expansion Valve Troubleshooting

Electronic expansion valves (or EEVs) are metering devices that you’ll find in a variety of modern HVAC equipment, including heat pumps, VRF units, inverter mini splits, and chillers. This valve is electronic rather than mechanical and can precisely control the flow of refrigerant into the evaporator and optimize efficiency for heating and cooling units. Other […]

The Best (and Worst) Ways To Duct a Dehumidifier

There are a couple of really important things to understand when ducting a dehumidifier. Getting one or both of these things wrong can throw off your entire dehumidifier install. Instead of just telling you the different ways you can install a dehumidifier, let’s talk through some dehumidifier basics, which will help us understand why it’s […]

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Making of a TV Show About Home Performance (Podcast)

In today's podcast, I talk with Corbett Lunsford about his new show about home performance and diagnosis. Home Diagnosis airs on PBS in winter 2018. Even though Home Diagnosis mostly deals with building performance, HVAC work is a large component of overall home performance. Corbett Lunsford used to be a pianist before becoming a building performance expert. He […]

Blower Door Testing, Building Performance & More w/ Corbett Lunsford (Podcast)

In this podcast episode, Bryan talks to Corbett Lunsford about blower door testing and the coming building performance revolution. Building performance and HVAC have been becoming much more closely linked lately. So, it's a good idea for HVAC techs to learn a bit about building performance. In the HVAC world, we often see homes with […]