June 28, 2026 By

Tech Support’s Top 25

The complete Tech Support’s Top 25 class taught by Pat Burke on 4/9/2026.

This comprehensive guide from Pat Burke offers essential tech support tactics for HVAC professionals. It covers troubleshooting communication systems, zoning, wiring, and common fault codes. Learn about crucial safety equipment, diagnostic tools like multimeters and megohmmeters, and the latest programming methods for NFC furnace boards. Essential information for efficient and safe HVAC service.

00:00 – Intro & Contact Methods
03:38 – Troubleshooting Tools & Resources
09:08 – Safety & ProPress Fittings
12:49 – Infinity System Diagnostics
25:46 – Furnace Pressure Transducer
49:43 – ADP Coils & Wiring
55:17 – Ductless Controls & Configuration
01:30:48 – Proprietary vs. Smart Thermostats
01:38:17 – Ductless Compressor & Inverter
01:53:49 – Test Lead Safety
01:57:00 – Furnace Control Board Replacement
02:09:28 – R454B Sensor & Leak Safety
02:24:20 – PWM/ECM Motor Testing

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