2020 Edition

HVAC Practice Test

HVAC practice exams can be used for professional-growth and to prepare for certification exams. Our HVACR practice exam consists of questions developed by HVAC Excellence, the largest provider of certifications (more than 200,000) in the HVACR industry.

  • assessment of broad based HVACR knowledge
  • practice in the various core specialty areas
  • benefit for self-assessment and professional-growth, as well as for exam preparation
  • use for students in trade-schools studying for course exams and for professional technicians sitting for certification exams
  • a good opportunity for practicing test taking skills and learning the subject matter

A 100 question EPA 608 practice test comes with our materials.

Take this free HVAC practice test to see how prepared you are for an HVAC certification exam.



1. Two locations where a cold air return should be installed:
2. Which of the following is a law of thermodynamics:
3. Sensible heat describes _________________________.
4. Latent heat measures _______________________.
5. Latent heat is measured in ____________________.
6. If 1 pound of water warms to 60 degrees F from 55 degrees F, what btu of latent heat will it have absorbed?
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7. What is the amount of heat energy required to evaporate 1 pound of water?
8. In an air conditioning and refrigeration system, what occurs in an evaporator?
9. In an air conditioning and refrigeration system, what occurs in a condenser?
10. In a sealed system, pressure and temperature _________________.
11. Which of the following is not a type of compressor?
12. In Fahrenheit, the boiling point of water is _____________.
13. To change Fahrenheit to Celsius, which formula is used?
14. Which of the following is not a method by which heat may be transferred from a warmer substance to a colder substance?
15. What btu of heat is required to raise 1 pound of ice 1 degree F when the temperature is below 32 degrees F?
16. What btu of heat is required to raise 1 pound of steam 1 degree F above the temperature of 212 degrees F?
17. A day-ton of refrigeration is the amount of refrigeration produced by melting 1 ton of ice at a temperature of 32 degrees F in 24 hours.
18. Ice exerts pressure ________________.
19. Pressure is usually measured in ___________.
20. Atmospheric pressure, at sea level, is 14.7 psia.
21. When one rises into the atmosphere, the atmospheric pressure decreases by 1 psi for every_________________.
22. Vaporization can be increased by _____________ the pressure on a liquid.
23. Every mechanical refrigeration system has __________ different pressure levels.
24. Pressure on the high pressure side of a mechanical refrigeration unit is called _______________.
25. The exertion of pressure on a substance with a constant temperature increases its volume in proportion to the increase in pressure.