HVAC Certification Test

HVAC Certification typically leads to professional growth and more money. The free HVAC Certification Practice Test below was written by HVAC Excellence.  It will give you an idea of the types of questions and sections on your actual exam. It is applicable to HVAC technicians and students in all 50 states.

Even if a state does not require a license to work in the field of HVACR, many technicians get certified through a professional organization. Certification ensures prospective employers and customers that a technician is knowledgeable, trained and professional.

For more comprehensive practice, check out the HVAC Practice Exam Kit - it has 300 questions with fully explained answers.

Principles of Electrical and Refrigeration Theory

1. What would the capacitance be if two Capacitors are wired in parallel, one having 25 mfd rating and the other having 5 mfd rating?
2. An electronically commutated motor (ECM) is designed to ________.
3. If the conductor in an AC circuit is wound into a coil, the resulting EMF opposes the supply voltage. What is this opposition called?

Air Conditioning

4. A refrigerant release heat when __________.
5. When testing the efficiency of a (10 seer are lower) air cooled condenser, the refrigerant condensing temperature should be no more than ____ higher than the entering air temperature.
HVACR Practice Test Kit
6. What is the minimum vertical drop from the outlet of the condensate drain pan to the inlet of the P trap when the evaporator is ahead of the blower?

Commercial Air Conditioning

7. How should metallic vibration eliminators be installed on a system which uses a reciprocating compressor?
8. When is the installation of a "P" trap mandatory in a drain line?
9. Why do multiple compressor systems have a balance line?

Commercial Refrigeration

10. The automatic expansion valve (AEV) maintains a constant ______ in the evaporator.
11. A refrigeration system used to cool another refrigeration system is called a _______.
12. If a pressure control has been adjusted to cut in at 30 psig, in order to have a 10 psig cut out, the differential setting of the control must be:

Heat Pump Service

13. What is the industry standard for maximum duration for defrost?
14. During the heating cycle the indoor coil becomes __________.
15. During the heating mode, the refrigerant in the outdoor coil is under ________.

Heat Pump Installation

16. Good field practice requires insulating the condensate line for at least the first ____ feet of the run from the indoor unit installed in a hot attic.
17. The vapor line on split system heat pumps between the outdoor and indoor units should be:
18. To maintain efficiency, what type of control is wired in the system to prevent the auxiliary heat from coming on until needed?

Gas, Oil and Combustion

19. What is the first step in the heating sequence of operation?
20. The specific heat of air is:
21. What is the approximate manifold gas pressure for a propane furnace?

Electric Heat

22. A thermostat used on an electric heat furnace will ________.
23. What is a major cause of electrical heat element failure?
24. Circuit protection of _________ amps is used for each 5 kW of heat.

Residential Heat Load Calculation

25. Which of the following is the reciprocal of "U" value?
26. Which of the following is considered an infiltration load?
27. Elevation changes greater than a few hundred feet can _________.

Universal R-410A Safety and Training

28. Which of the following is true about Polyalkylene Glycol (PAG) Oils?
29. Technicians handling liquid refrigerant should wear gloves and ___________.
30. The receiver bypass:

Green Awareness

31. Which of the following is a source of sustainable energy?
32. What is the cost of electricity based on?
33. How much of all the available water on the planet is fresh water?