Proper HVAC design starts with knowing how much heating and cooling a home actually needs. In this webinar, we’ll break down the basics of HVAC load calculations and explain why proper sizing matters for comfort, energy efficiency, humidity control, and equipment life.

Attendees will explore how insulation, air leakage, weather conditions, and the building envelope all affect heating and cooling demand. This session will connect building science with real-world HVAC applications and show why “rule-of-thumb” sizing can lead to comfort problems and higher energy use.

Whether you’re evaluating an existing system, planning upgrades, or supporting electrification projects, this webinar will help you think beyond equipment size and focus on the home as a complete system.
 
Learning Objectives:

• Explain how BTUs and heat transfer affect HVAC system sizing
• Identify how insulation, air leakage, and the building envelope impact heating and cooling loads
• Compare proper load calculations with common oversizing practices and their effects on comfort and efficiency
• Apply building science concepts to HVAC and electrification decisions

About the Instructor:

Brynn Cooksey Sr., aka the "Air Doctor," is a Detroit native, award-winning HVAC expert, and owner of Air Doctors Heating and Cooling and HVAC U. After 15 years in the utility gas and power industry, he took over his family’s business and rebranded it with his well-earned nickname.
Brynn studied HVACR and Energy Management at Henry Ford College and Ferris State University, later returning to teach at his alma mater. With over 10,000 professionals trained, he’s a respected educator, consultant, and technical contributor for top industry journals and webinars.
Recognized as one of ESCO Institute's Top 25 Most Influential HVACR Instructors (2024 & 2025), an IREC Certified Master Trainer (2025), and one of ACHR News' Top 40 Under 40 (2024), Brynn continues to shape the future of HVACR and building science.
 

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