Corbett Lunsford on Arming Homeowners with the Knowledge they need to get the HVAC systems they deserve artwork
The Heat Pump Podcast

Corbett Lunsford on Arming Homeowners with the Knowledge they need to get the HVAC systems they deserve

  • S1E24
  • 53:33
  • April 16th 2025

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In this episode of the Heat Pump Podcast, hosts Ed Smith and Eric Fitz welcome Corbett Lunsford, a building science expert and host of the PBS show Home Diagnosis, to discuss the importance of scientific approaches in HVAC, the power of testing, and how to navigate the industry with confidence.

Corbett shares insights on tools like blower doors, RED Calc and his own psychrometric wheel. With years of experience in building science, he brings a fresh perspective on how proper testing and measurement can significantly improve HVAC performance and efficiency.

This episode is packed with valuable information for HVAC professionals, contractors, and anyone passionate about building science. Tune in to gain expert knowledge that can help you refine your approach, deliver more comfort to homeowners, and better explain your solution to your customers.

Expect to Learn:

  • Airtight homes are essential for comfort, efficiency, and health – don’t fear tight construction, just ventilate properly.
  • Homeowners are increasingly well-informed, and HVAC pros should be ready to engage with curious, educated clients.
  • Building performance starts with the enclosure; HVAC systems must be designed with the current and future envelope in mind.
  • Testing tools like blower doors are critical to uncover hidden issues and verify system performance.
  • Proper HVAC installations begin with proper design. “The box” is nothing without accurate Manuals J, S, D, and understanding room behavior. 
  • Fast rebate programs without proper testing risk widespread system failures. 

Episode Breakdown: 

[00:00] - Introduction of the episode.

[01:17] - Corbett’s Background 

[04:34] - The Importance of Testing in HVAC 

[06:52] - Essential Tools for Building Performance Analysis 

[13:44] - Common Industry Misconceptions 

[17:07] - The building envelope comes first; HVAC must work with it, not around it.

[22:57] - Blower door and pressure tests reveal issues you can’t see.

[32:13] - Great installations begin with smart HVAC design.

[46:37] - The Role of Consumer Education

[50:03] - Closing Remarks and Where to Connect with Corbett

[50:59] - Free Resources and Tools for HVAC Professionals

Connect with Corbett Lunsford: 

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The Heat Pump Podcast

The Heat Pump Podcast discusses all things related to heat pumps. We cover:

  • HVAC entrepreneurship
  • Business operations
  • Technology innovations
  • Building science
  • How policy impacts both contractors and homeowners
  • ... and more

Our goal is to ensure that the transition to heat pumps for heating and cooling is a win for everyone – homeowners, contractors, and the planet – by sharing insights, learnings, and best practices.