🔧 YOUR PATH THROUGH THE LAB This is a nine-level path from beginner foundations to field-ready troubleshooting. Start at Level 1 and complete the courses in order. Do not skip the worksheet, lab, or safety checks. THE COURSE LOOP — USE THIS EVERY TIME 1. LEARN — Read the Skool lesson and review the PowerPoint Study Deck. 2. WATCH — Watch the required video and focus on the exact skill being taught. 3. PRACTICE — Complete the Student Worksheet in your own words. 4. APPLY — Complete the lab or service-call scenario using safe procedures. 5. COACH — Open HVAC Tech Coach AI, upload your work, and ask for feedback. 6. CORRECT — Fix answers marked incomplete, incorrect, or unsafe. 7. PROVE — Complete the knowledge check and explain your reasoning. 8. ADVANCE — Mark the course complete, then move to the next course. THE NINE LEVELS 1. Rookie — Safety, tools, measurements, HVAC science, electricity, components, and documentation. 2. Apprentice — Refrigeration cycles, heat pumps, sequence of operation, and basic diagnostics. 3. Installer — Equipment preparation, piping, evacuation, charging, startup, and installation quality. 4. Troubleshooter — Use the C.H.A.T. method to verify the complaint, collect evidence, test safely, and explain the next step. 5. Systems Tech — Gas heat, oil heat, electric heat, combustion safety, and system-specific service. 6. Airflow Specialist — Static pressure, airflow measurement, duct systems, load calculations, and comfort problems. 7. Commercial Pro — Commercial refrigeration, ice machines, mini-splits, VRF, controls, and larger-system thinking. 8. EPA & Refrigerant Ready — EPA 608 Core and Types I, II, and III, plus refrigerant safety and A2L/low-GWP awareness. 9. Field Ready — Complete service-call simulations, customer communication, documentation, and the final capstone. HOW TO USE AI CORRECTLY HVAC Tech Coach AI is a second set of eyes. Use it to question your reasoning, review worksheets, practice service calls, and identify missing evidence. It does not authorize live work, replace manufacturer instructions, or make an unsafe condition safe.