Practice test

HVAC Practice Exam 1

Free 25-question HVAC practice exam covering EPA 608 basics, the refrigeration cycle, and heating systems. Instant scoring with clear answer explanations.

These questions are for study practice only and are not official exam questions.

Question 1

Under the Clean Air Act, what does Section 608 primarily regulate?

Question 2

Which EPA 608 certification type is required to service small appliances such as household refrigerators and window air conditioners?

Question 3

It is illegal under the Clean Air Act to do what with refrigerant during service or disposal?

Question 4

What does 'recovery' of refrigerant mean?

Question 5

Refrigerant cylinders used for recovery must be identified how?

Question 6

Class I ozone-depleting substances such as CFC-12 were phased out mainly because they:

Question 7

EPA 608 technician certification:

Question 8

Which refrigerant is an HFC with zero ozone-depletion potential commonly used in residential AC?

Question 9

In the basic vapor-compression cycle, which component absorbs heat from the conditioned space?

Question 10

Which component raises the pressure of the refrigerant vapor in the cycle?

Question 11

Superheat is best defined as:

Question 12

Subcooling is measured on which side of the system?

Question 13

A pressure-temperature (P/T) chart is used to:

Question 14

Which metering device responds to evaporator superheat to control refrigerant flow?

Question 15

What is the normal job of the condenser in an air conditioner?

Question 16

A typical 'temperature split' across a residential evaporator coil in cooling is about:

Question 17

Refrigerant oil circulates with the refrigerant primarily to:

Question 18

AFUE stands for and measures:

Question 19

In a gas furnace, what device proves there is a flame before the gas valve stays open?

Question 20

What is the purpose of the high-limit switch in a furnace?

Question 21

A heat pump's reversing valve allows the system to:

Question 22

Which flue gas is the dangerous, odorless product of incomplete combustion?

Question 23

Static pressure in a duct system is most like:

Question 24

CFM in an air handling system stands for:

Question 25

A standing pilot, hot surface igniter, and spark igniter are all examples of:

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