NATE GS Installation study guide
NATE GS Installation · Work through your exam, one topic at a time.
NATE (North American Technician Excellence) is described on its own site as the nation's largest nonprofit certification organization for heating, ventilation, air conditioning and refrigeration (HVACR) technicians. The Installation (GS) credential is one of the NATE exams listed under the Exams Offered section of natex.org, aimed at technicians who install residential and light commercial HVAC systems rather than only service them. The NATE GS Installation study guide has 7 sections and about 1,886 words.
01Air Distribution
NATE’s Air Distribution domain tests whether an installer can deliver design airflow quietly, at the correct static pressure, and with a balanced return path. Questions often involve duct sizing, fan laws, register selection, and field balancing.
322 words, about 2 min02Air Quality
The Air Quality domain tests ventilation, filtration, and source control. NATE expects you to apply ASHRAE 62.2-style whole-house ventilation, select filters by MERV and pressure drop, and verify combustion safety.
286 words, about 1 min03Electrical
The Electrical domain tests safe diagnosis and installation of line-voltage and control circuits: Ohm’s law, motor circuits, capacitors, contactors, disconnects, grounding, and conductor sizing. Ohm’s law: E = I × R; power: P = E × I.
278 words, about 1 min04HVAC Fundamentals
HVAC Fundamentals covers the physics behind the equipment: heat transfer, psychrometrics, tonnage, efficiency ratings, and load-based airflow. One ton = 12,000 Btu/h.
233 words, about 1 min05Piping and Ductwork
This domain tests refrigerant line sizing, evacuation, brazing, pressure testing, duct sealing, and support. The exam wants field-ready installation judgment, not just component names.
271 words, about 1 min06Refrigeration Cycle
The Refrigeration Cycle domain tests the four basic components, saturation, superheat, subcooling, and charging. Expect pressure-temperature relationships and field measurement interpretation.
230 words, about 1 min07Safety and Codes
Safety and Codes tests the rules that keep installations legal and occupants alive: electrical safe work practices, refrigerant safety, combustion air, venting, and clearances. Follow OSHA lockout/tagout: isolate, lock, tag, and verify zero energy.
266 words, about 1 min