Mike PleziaInside service technician, Clark Associates · Commercial Equipment, HVAC, and Refrigeration professional

See the whole system

28 Apr 2026 · 1 min

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In this brief instructional monologue, the speaker urges new tradespeople to adopt a systems‑thinking mindset when diagnosing machinery. Rather than isolating components such as compressors, fans, or valves, he explains that all parts are interdependent—airflow influences temperature, temperature influences pressure, and pressure influences the compressor—so a small change can ripple through the entire system. Effective technicians therefore examine the relationships among components and, once they understand this holistic view, they should pass the knowledge on to others.

Chapters

If you're new to the trades, it can be tempting to focus on one part at a time— the compressor, the fan, the valve— but machinery doesn't work like that. It's more like they work as a whole. They work as a system, much like your body. Everything is connected. Think about it. Airflow affects temperature. Temperature affects pressure. Pressure affects the compressor. One small change can ripple through the entire system. Great technicians don't just look at the individual parts, they look at the relationship those parts share across the whole body, because ultimately everything is connected. Now that you know, you can help someone else know.