
HVAC Techs Are Losing Refrigerant Using Gauges & Ignoring Probe Diagnostics - Eric Ruggles Part 2
From HVAC Know It All Podcast by Gary McCreadie - Licensed Refrigeration/HVAC Technician
April 27, 2026 · 19 min
About this episode
Gary McCreadie and Eric Ruggles discuss modern diagnostic tools and techniques for HVAC systems, focusing on airflow, pressure measurement, and the implications of refrigerant loss.
In this episode of the HVAC Know It All Podcast, host Gary McCreadie talks with Eric Ruggles , Director of Engineering at Ritchie Engineering Co., Inc. (YELLOW JACKET) , about airflow, static pressure, and modern diagnostic tools. In Part 2, they discuss proper system commissioning, checking pressure across components, and identifying airflow restrictions without disassembling equipment. Eric explains how tools like a digital manometer and wireless probes help measure system performance, airflow, and gas pressure. They also cover the shift from manifolds to probes, including concerns about refrigerant loss and system contamination. The conversation wraps up with practical insights on using airflow, temperature, and CFM measurements to determine true system capacity and improve service decisions. Gary and Eric discuss airflow testing, static pressure, and how modern tools improve system diagnostics and performance. They explain how proper commissioning sets baseline readings and helps identify issues like plugged coils or airflow restrictions. Eric describes how digital manometers and probes can measure pressure, airflow, and gas pressure while creating reports for customers. They…
People in this episode
Host: Gary McCreadie
Guest: Eric Ruggles
Topics covered
- refrigerant loss
- airflow diagnostics
- system commissioning
- pressure measurement
- modern tools
- service decisions
Keywords
- HVAC
- diagnostics
- airflow
- static pressure
- digital manometer
- wireless probes
- system capacity
- refrigerant
- commissioning
Mentioned in this episode
Organizations: Ritchie Engineering Co., Inc.
Products: YELLOW JACKET
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