Home > NATE > Quizzes > NATE AC Service Exam
NATE AC Service Exam
Fast practice, instant feedback. Timer auto-submits when time’s up.
Avg score: 66% • Most missed: “After startup, a technician finds a noise problem caused by a metal supply regis…”
The NATE Air Conditioning (AC) Service Exam, part of the NATE traditional certification pathway, requires passing a 50-question Core exam and a 100-question AC Specialty exam covering installation, service, maintenance, and repair. Key areas include HVAC fundamentals, electrical circuits, refrigeration cycles, airflow, and diagnostics.  NATE AC Service Exam Syllabus & Key Topics: The exam focuses on both theoretical knowledge and practical, field-specific skills:  Core Exam (General Knowledge): Safety, tools, fasteners, basic science (heat/pressure), and basic electrical. AC Specialty... Show more
NATE AC Service Exam
Time left 00:00
25 Questions

1. What is the purpose of the grounding conductor?
2. Will a Capacitor Start-Capacitor Run (CSCR) motor that has an open run capacitor start?
3. What is the typical method of staging a two stage compressor in an air conditioning system?
4. What effect does insufficient voltage have on a solenoid valve?
5. The purpose of a sequencer in an auxiliary 20 kW electric heater is to energize:
6. Which of the following is a typical use of an outdoor ambient thermostat in a commercial split system air conditioner?
7. A delay on make relay delays load:
8. Suction line insulation is important to control condensation and to:
9. A delay on break relay delays load:
10. How should a technician evaluate the circuitry when the wiring diagram is missing?
11. Which of the following is a proper operation for a packaged air conditioning system using an electronic control board?
12. Hard start kits are typically required on:
13. Which of the following can cause a lower than normal suction pressure?
14. If an air conditioning system needs to operate in a low ambient condition, the condenser may become too efficient. What happens to condenser operation and what can be done to counteract this condition?
15. What factors should a technician determine when replacing a contactor?
16. A 120V x 24V step down transformer has a rating of 40 VA. This transformer must not be connected to a load above what current draw?
17. With an R-410A condensing pressure of 397 psig and a liquid line temperature of 108degF, what is the subcooling temperature?
18. Describe the air flow path of an outdoor pull-through coil.
19. In a economizer system, the enthalpy control is used to measure:
20. Which of the following is a benefit in using a properly sized 4' pleated media filter compared to a 1' fiberglass air filter?
21. In a low voltage circuit, a corroded wire-to-terminal connection acts in the circuit like a(n):
22. Thermostatic expansion valves meter refrigerant flow to a coil to maintain:
23. When performing a cycling check during a maintenance call, the technician should first check with the owner of the equipment for their opinion of performance. The next step is to turn the unit off at the thermostat SYSTEM switch. The technician should set the FAN switch to:
24. The purpose of using flux when soldering is to:
25. A system supply airflow check is used to diagnose:

⚡ Recently practiced quizzes in this topic
Live quiz activity
NATE HVAC Support Technician Basics HVAC Practice Test NATE Exam: Core Essentials Residential Air Conditioning NATE Air Conditioning Troubleshooting HVAC Tools NATE Air Conditioning Components NOCTI HVAC Review Air Conditioning Basics
 
❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

🌈  Our mission is to help improve your scores in any subject and exam withonline quizzes, practice tests, study guides, & advice for students. Since 2018.
About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | OSHA Basics Quiz | What Should We Know?
Privacy | Terms |
Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.