This podcast contains a handful of visuals that we thought would be helpful, so we've published a video version of this podcast at https://youtu.be/NZ2qp06oET8.

The Testo 605i that Mark mentioned can be found at https://amzn.to/41TYFjs

To find the chart that Mark referenced, go to https://efficientcomfort.net/charts/. 

Check this link to IEB Unite: https://events.iebcoaching.com/IEBUnite2025
You can find Mark at https://besttampainspector.com.

Reuben Saltzman, Tessa Murry, and Mark Cramer delve into the intricacies of air conditioning testing, focusing on how home inspectors can improve their methods. They discuss the importance of understanding temperature splits, the role of humidity, and the need for advanced measurement techniques. Mark emphasizes the limitations of basic thermometers and advocates for more accurate tools to assess air conditioning performance. The discussion also covers real-world examples, practical applications, and the significance of airflow in HVAC systems. In this conversation, the speakers delve into the intricacies of HVAC measurement techniques, focusing on the use of advanced tools like the Measure Quick app. They discuss the importance of accurate temperature readings, the role of humidity in system performance, and the shift toward non-invasive testing methods. The conversation highlights the challenges faced by HVAC professionals in adapting to new technologies and the implications of energy efficiency on system performance.

Takeaways

Air conditioning is crucial for comfort, especially in humid climates.
Home inspectors often rely on basic thermometers, which may not provide accurate readings.
Temperature splits in air conditioning can vary significantly based on humidity levels.
Understanding latent heat is essential for accurate air conditioning assessments.
Advanced measurement tools can provide more precise data than traditional methods.
Humidity plays a critical role in determining the effectiveness of air conditioning systems.
Real-world examples illustrate the importance of proper testing techniques.
Airflow issues are a common problem in HVAC systems that can affect performance.
Using technology like hygrometers can enhance the accuracy of air conditioning evaluations.
The ideal temperature split for air conditioning systems typically falls between 18-20 degrees. Using two probes allows for the simultaneous measurement of return and supply air.
The Measure Quick app simplifies the process of HVAC measurements.
Accurate temperature readings are crucial for assessing system performance.
Non-invasive methods are becoming the preferred approach in HVAC inspections.
Humidity levels significantly impact the efficiency of air conditioning systems.
High-efficiency systems may struggle with humidity control despite their performance.
Understanding airflow and duct conditions is essential for accurate HVAC assessments.
Investing in advanced measurement tools can enhance inspection accuracy.
The HVAC industry is gradually shifting away from traditional gauge methods.
Education and resources are vital for HVAC professionals to stay updated. 

Chapters

00:00 Introduction to Air Conditioning Testing
09:14 Advanced Measurement Techniques for Air Conditioning
18:01 Understanding Temperature Differential and Humidity
31:31 Understanding Measurement Techniques in HVAC Systems
43:12 Cost and Accessibility of HVAC Measurement Tools
48:13 Key Factors Affecting HVAC Performance
56:18 Resources for Further Learning in HVAC