Free practice test

HVAC Technician Practice Test

Check what you know about the HVAC technician job with 15 free questions and instant explanations.

Updated By the Career Education Institute Curriculum Team
About this practice test

15 multiple-choice questions on HVAC technician knowledge, safety and vocabulary. Submit to see your score and explanations, or open any question’s answer as you go. Nothing is saved or shared.

Question 1 of 15One ton of cooling equals:
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Answer: 12,000 BTU/hr. One ton is 12,000 BTU per hour.

Question 2 of 15Which certification is required to handle refrigerants?
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Answer: EPA Section 608. EPA 608 is legally required.

Question 3 of 15Where does refrigerant absorb heat from indoor air?
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Answer: Evaporator coil. The evaporator absorbs heat indoors.

Question 4 of 15Subcooling is measured on the:
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Answer: Liquid line. Subcooling is checked on the liquid line.

Question 5 of 15Before handling a capacitor, you should:
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Answer: Discharge it safely with power off. Capacitors can hold a dangerous charge.

Question 6 of 15Which term matches this definition: “Removing refrigerant from a system into a cylinder, as required by EPA rules.”
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Answer: Recovery. Recovery: Removing refrigerant from a system into a cylinder, as required by EPA rules.

Question 7 of 15What does “Compressor” mean?
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Answer: The pump that raises refrigerant pressure and circulates it.. Compressor: The pump that raises refrigerant pressure and circulates it.

Question 8 of 15Which term matches this definition: “A system that moves heat into a building in winter and out in summer.”
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Answer: Heat pump. Heat pump: A system that moves heat into a building in winter and out in summer.

Question 9 of 15What does “Ton (cooling)” mean?
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Answer: 12,000 BTU per hour of cooling capacity.. Ton (cooling): 12,000 BTU per hour of cooling capacity.

Question 10 of 15Which term matches this definition: “The temperature of refrigerant vapor above its boiling point, used to check charge.”
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Answer: Superheat. Superheat: The temperature of refrigerant vapor above its boiling point, used to check charge.

Question 11 of 15What does “Refrigeration cycle” mean?
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Answer: The process of compression, condensation, expansion and evaporation that moves heat.. Refrigeration cycle: The process of compression, condensation, expansion and evaporation that moves heat.

Question 12 of 15Which term matches this definition: “The outdoor coil where refrigerant releases heat.”
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Answer: Condenser. Condenser: The outdoor coil where refrigerant releases heat.

Question 13 of 15What does “Subcooling” mean?
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Answer: The temperature of liquid refrigerant below its condensing point, used to check charge.. Subcooling: The temperature of liquid refrigerant below its condensing point, used to check charge.

Question 14 of 15Which term matches this definition: “An electrical component that helps start and run motors and compressors.”
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Answer: Capacitor. Capacitor: An electrical component that helps start and run motors and compressors.

Question 15 of 15What does “Metering device (TXV)” mean?
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Answer: A thermostatic expansion valve that controls refrigerant flow into the evaporator.. Metering device (TXV): A thermostatic expansion valve that controls refrigerant flow into the evaporator.

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