Learning Paths
Ordered routes through the library: start as a beginner, build apprentice-level electrical and equipment knowledge, then work up to full technician diagnostics.
Beginner Path
Beginner
12 topicsStart from zero: heat, temperature, pressure, the refrigeration cycle, airflow and basic electricity.
Apprentice Path
Apprentice
20 topicsElectrical, motors, controls and the major equipment types, then your first diagnostics.
Technician Path
Technician
27 topicsRefrigerant, airflow and combustion diagnostics through to full system troubleshooting.