A/C Install and Troubleshooting- Whited and Raman, Menomonee Falls

A/C Service & Troubleshooting – Build Confidence and Speed with Johnstone Supply Training Classes

This hands-on training class is designed for HVAC professionals looking to sharpen their air conditioning service skills and become more efficient troubleshooters in the field. We’ll break down A/C system operation, component functions, and proven diagnostic workflows to help you identify problems quickly and accurately.

From electrical diagnostics to refrigerant circuit analysis, this class focuses on real-world service scenarios you encounter every cooling season. You’ll learn how to interpret symptoms, verify system performance, and avoid common misdiagnoses that lead to repeat callbacks.

The session is delivered in an open forum format, encouraging discussion around real service challenges, field experiences, and best practices—making the training practical, engaging, and immediately applicable.

Don’t miss this opportunity to improve your A/C troubleshooting skills and elevate the quality of every service call.

1. A/C System Fundamentals – Understand how compressors, condensers, evaporators, metering devices, and controls work together.
2. Electrical & Control Diagnostics – Learn systematic approaches to diagnosing capacitors, contactors, motors, and low/high voltage issues.
3. Refrigerant Circuit Troubleshooting – Identify common problems such as under/overcharging, restrictions, and airflow-related faults.
4. Performance Testing & Verification – Use temperature split, superheat, subcooling, and airflow checks to confirm proper operation.
5. Service Best Practices – Apply proven service and maintenance strategies that improve efficiency, reliability, and customer satisfaction.

This class is ideal for technicians who want to reduce guesswork, increase confidence, and deliver consistent, professional A/C service.

Know what’s Happening Next — before everyone else does.

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Host or Publisher Johnstone Supply of SE WI