Previous EPA 608 Type 3 Exam Practice Test 2 Next EPA 608 Core Exam Practice Test 12

EPA 608 NEC 2023

EPA 608 Core Exam Practice Test 11

Free EPA 608 Practice Test ( CORE Exam)-11

TOPICS COVERED

epa 608 practice tests

How this test works

Read each question carefully

Look for absolute words like always / never — they often distinguish the right answer.

Manage your time

You have 23 min for 15 questions. Skip tough ones and come back.

Progress is auto-saved

Your answers are saved locally — a page refresh won't lose your work.

Review your answers

After submitting you'll see every explanation and your NEC references.

Frequently Asked Questions

Yes — completely free with no account needed.

The EPA 608 certification is required by law for any technician who purchases or handles refrigerants. It covers safe handling, leak detection, recovery, and environmental regulations.

Type I covers small appliances (≤5 lbs refrigerant), Type II covers high-pressure systems, Type III covers low-pressure systems, and Universal covers all three. Most HVAC technicians pursue Universal certification.

You must score at least 70% on each section of the exam. The Universal exam has four parts: core, Type I, Type II, and Type III.

How to Use This Practice Test

This EPA 608 Core Exam Practice Test 11 has 15 questions with detailed answers and NEC references. Take the full test, review every wrong answer, and look up the NEC article it references before moving on.

Tip: The EPA 608 exam is NOT open book — memorize refrigerant ODP/GWP values and recovery rules before the exam.

Topics covered: Refrigerant regulations, recovery procedures, leak detection, and refrigerant properties.
Passing score: 70% required on each section. Universal certification requires passing all four sections.
Questions: 15 multiple-choice, one correct answer each

15

Questions

23 min

Time

70%

Pass

Timer starts immediately. Progress is auto-saved.

EPA 608 Core Exam Practice Test 11 — Question List

Question 1: …………… blend refrigerant does not exhibit temperature glide and acts as a single refrigerant.

Alkylbenzene
Zeotropic
Azeotropic
Near-azeotropic

Question 2: If corrosion found on the relief valve body then immediately ………

It needs to be replaced
It needs to repaired
It needs to be cleaned
It needs to be reconditioned

Question 3: When a system pressure increases even after the evacuation then ………

The system is ready to be charged
An expansion valve is clogged
They system may be leaking
A mal operation in compressor motor

Question 4: The recovery equipment that depends on the pressure in the refrigeration system is ……….

System-dependant
Self dependant
Self contained
Illegal to use

Question 5: The frost formed on evaporator fins will acts as …………….. between evaporator heat exchanger and surrounding air.

Insulator
Conductor
Semi conductor

Question 6: The accumulator placed in the refrigeration circuit to …………………… directly passing in to the compressor

remove the moisture from the refrigerant
prevent the slug of the refrigerant
control the refrigerant
filter the refrigerant

Question 7: The pressure of the refrigerant at the compressor discharge compared to refrigerant pressure at evaporator outlet is …………….

Higher
Lower
Same
None

Question 8: The compound gauge reads the vacuum in the system in ……….

Pounds per Square Inch (PSIG)
Inches of mercury (in.Hg)
Pounds per Square Inch absolute (PSIA)
Kilo Pascal (Kpa)

Question 9: The nitrogen should not be added to a fully charged system for the purpose of leak detection.

True
False

Question 10: From which year on wards the sale of CFC and HCFC refrigerants is restricted to certified technicians.

November 14, 1994
November 15, 1993
October 21, 1995
July 2, 1992

Question 11: If you cannot find a leak with any leak detector then

charge more refrigerant and increase the pressure which makes the leak sensible by the detector
recover the refrigerant and purge with pressurised dry nitrogen to find the leak
purge the charged system with dry nitrogen to find the leak
add more oil to the system to find the leak.

Question 12: If a technician finds that the refrigerant is mixed

he should recover mixture into a separate container
he should filter the refrigerant and separate them
he should recycle the mixture refrigerant
he should separate and reclaim the refrigerant which can later be charged into system.

Question 13: What happens to the time of evacuation if the refrigerant system capacity and gauge set hose size is large?

Increases
Reduces
Does not effect
None

Question 14: What are the two ports of recovery cylinders?

Liquid and vapour port
Low pressure and high pressure liquid ports
Low pressure and high pressure vapour ports
None

Question 15: The oil is that is recovered during refrigerant recovery

It must send to the recovery agency to clean and make it reusable
The oil can be recovered to separate cylinder for reuse it
The oil cannot be reusable and it should sent for disposable
Recover the oil and refrigerant in the same tank which can be reused

Study Tip: The EPA 608 exam is closed book. Memorize: recovery is required before opening any refrigerant system. Venting refrigerant is illegal. Know the ODP and GWP values for R-22, R-410A, R-134a, R-32, and R-454B.

EXAM CARD EPA 608

Questions15

Time limit23 min

Pass score70%

Code editionNEC 2023

DifficultyIntermediate

Last reviewedJun 2026

Timer starts immediately. Progress is auto-saved.

Source: EPA Section 608 (40 CFR Part 82)