NATE Core & Service Certification

The four major components, pressure-temperature relationships, saturation, superheat, subcooling, and refrigerant state changes.

Ohm's law, wiring, capacitors, contactors, transformers, motor types, and circuit sizing for HVAC equipment.

Proper use of manifold gauges, multimeters, manometers, hygrometers, micron gauges, and recovery equipment.

Recovery, evacuation, charging procedures, nitrogen purging, brazing, filter-driers, and refrigerant oils.

Airflow measurement, CFM calculations, static pressure, duct design, filter selection, and blower performance.

Gas furnace operation, ignition sequence, combustion safety, heat exchangers, gas pressures, and temperature rise.

System charging, superheat/subcooling diagnostics, pressure analysis, coil icing, short cycling, and matched systems.

Reversing valve operation, defrost cycles, auxiliary heat, accumulator function, and heat pump diagnostics.

Thermostat wiring, heat anticipators, control sequences, nameplate data, and professional customer communication.