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EPA 608 NEC 2023

EPA 608 Type 1 Exam Practice Test 1

Free EPA 608 Type I Exam Practice Test 1. 25 questions covering refrigerant breathing hazards, service manifold best practices, R-500 recovery, Type I technician certification, process tube access, passive recovery devices, leak repair rules, domestic refrigerator recovery, CFC/HCFC sale restrictions, de minimis releases, R-12 drop-in substitutes, pressure requirements, cylinder fill limits, small appliance definition, recovery cylinder color code, R-134a as replacement for R-12, system-dependent high-side recovery, recovery efficiency standards, hermetically sealed compressors, appliance disposal rules, R-500 blend composition, frostbite hazards, ARI 740 standard, and process tube sealing.

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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.

Key facts for this test: EPA Type I certification covers small appliances with a refrigerant charge of 5 pounds or less. Refrigerant vapors are heavier than air and accumulate at floor level — they displace oxygen and can cause asphyxiation. Recovery cylinders must never be filled more than 80% of their water capacity and are color-coded with a gray body and yellow top. There is no true drop-in substitute for R-12 — R-134a requires oil and metering device changes. R-500 must be recovered into its own separate cylinder — never mixed with anything else.

25

Questions

45 min

Time

70%

Pass

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Student Reviews 5.0 / 5 · 1 review

T

Tamara Osei

Type I small appliance questions are very well done here. I work on window units and mini splits so this was the section I needed most. Passed my Type I endorsement no problem. Roughtly 70 percent of what I saw on the test was covered here.

EPA 608 Type 1 Exam Practice Test 1 — Question List

Question 1: The large refrigerant spills can cause breathing problems because ..........

They smell strong odor and breathing becomes difficult
They are lighter than air and causes dizziness
They are heavier than air and displace oxygen in low areas, causing asphyxiation
They string the nose and cause sneezing

Question 2: When you use your service manifold to check the refrigeration system pressure its best to ......................

release the refrigerant to smell acid
use hand valves or self-sealing hoses to minimize the leak.
use recovery equipment to gain access to the refrigeration system during testing
wear safety glasses to prevent damage in the event of any leak

Question 3: When refrigerant R-500 is recovered from refrigeration appliance .................

It can be mixed with any other refrigerant because it is a mixer of two refrigerants
It can be mixed with R-12 but not with R-22.
It need not be recovered because it is not covered by the clean air act.
It must be recovered to its own recovery vessel with out mixing anything

Question 4: If any technician wants to recover refrigerant during repair or maintenance of the small refrigeration appliance he must be certified as either universal technician or .............

Type 1 Techinician
Type 2 Techinician
Type 3 Techinician
none

Question 5: When adding or removing refrigerant from refrigeration appliance it must be equipped with a service aperture or any other device as per EPA. The service port typically is ...............

a straight process tube that is entered using a piercing access valve
located near 20 inches of the compessor
Strong mechanical device to hold the high pressure.
pressure gauge set to monitor the pressure of the refrigerant during adding or removing

Question 6: The small refrigeration appliance passive system dependent recovery device .................

never needs any compressor to recover the refrigerant
must use a pressure relief value during recovery process
captures the refrigerant into a non pressurized container
needs the compressor to perform the refrigeration process

Question 7: In small appliance the leak .....................

is not mandatory to repair
is mandatory to repair with in 30 days
is mandatory to repair with in 45 days
is mandatory to repair with out time limit

Question 8: For refrigerant recovery the passive recovery device is used which of the following refrigeration system?

A centrifugal air conditioning system
A reciprocating liquid chiller
A large commercial walk in freezer
a domestic refrigerator

Question 9: As per EPA , the sale of CFC and HCFC refrigerants is

banned
permitted to equipment owners
allowed only if the quantity is less than 7 pounds
restricted to EPA certified technicians

Question 10: The refrigerant that is vented from a graduated charging cylinder ................

does not need to be recovered
must be recovered
is considered a de minus release
none

Question 11: In a small appliance which of the following refrigerant that can be used as a direct service "drop-in" substitute for R-12?

R-410 A
R-134a
R-141b
none

Question 12: The recovery procedure should not be started , if the system pressure is ........... after installing or opening a piercing access value.

zero psig
10 psig
20 psig
25 psig

Question 13: The technician should ensure that the refrigerant recovery cylinder must not fill more than ............... percentage of its capacity.

90
80
70
60

Question 14: A device is said to be small appliance if .......................

it is manufactured, charged and sealed in a factory.
it is with a charge of 5 pounds or less
it has compressor of less than one horse power
Its size is less than 1 meter

Question 15: The storage tanks to store recovered refrigerant are packed .................

yellow with grey tops
yellow with red tops
grey with yellow tops
red with yellow tops

Question 16: R-134a has replaced R-12 in new small household refrigerators and freezers. Why is R-134a NOT a direct "drop-in" replacement for R-12?

R-134a and R-12 are completely interchangeable with no modifications
R-134a requires different compressor oil and a different expansion device
R-134a has higher ozone depletion potential than R-12
R-134a is illegal to use in small appliances

Question 17: When using system-dependent (passive) recovery on a small appliance with an OPERATING compressor, from which side of the system should refrigerant be recovered?

Low side only
High side only
Both high side and low side
Either side — it does not matter

Question 18: EPA regulations require that recovery equipment used on a small appliance with an OPERATING compressor must capture at least __________ of the refrigerant charge.

80%
90%
95%
70%

Question 19: EPA regulations require that recovery equipment used on a small appliance with a NON-OPERATING (broken) compressor must capture at least __________ of the refrigerant charge.

90%
80%
70%
60%

Question 20: Small appliances such as household refrigerators use a hermetically sealed compressor. What does "hermetically sealed" mean?

The compressor uses only sealed bearings
The motor and compressor are sealed in one welded housing that cannot be opened for field repair
The compressor is sealed against water entry only
The compressor housing can be opened by a certified technician with special tools

Question 21: Before a small appliance (such as a refrigerator or window A/C) is disposed of or sent to a recycler, what must happen to the refrigerant?

The refrigerant can be vented if the appliance is being disposed of
The refrigerant must be recovered by a certified technician before disposal
Only the compressor oil needs to be drained before disposal
No action is needed — small appliances are exempt from recovery requirements

Question 22: R-500 is classified as an azeotropic refrigerant blend. What two refrigerants make up R-500?

R-22 and R-134a
R-12 (73.8%) and R-152a (26.2%)
R-12 and R-22 in equal parts
R-134a and R-410A

Question 23: If liquid refrigerant contacts a technician's skin or eyes, what injury can result?

Chemical burns from the acid in refrigerant
Frostbite due to rapid evaporation and extreme cold
Electric shock from the refrigerant vapor
No injury — refrigerant is harmless on skin

Question 24: What is ARI Standard 740, and why is it important for EPA 608 compliance?

ARI 740 is the ozone-depletion rating standard for all refrigerants
ARI 740 is the performance testing standard that recovery equipment must meet for EPA compliance
ARI 740 sets the maximum allowable refrigerant charge for Type I appliances
ARI 740 is the certification exam for EPA 608 Type I technicians

Question 25: After removing a solder-less piercing access valve from a small appliance process tube, what must the technician do to the process tube?

Leave the piercing valve in place — removing it would cause a leak
Braze (solder) the process tube closed to permanently seal it
Cap the piercing valve opening with electrical tape
Replace the piercing valve with a new one of the same type

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

Questions25

Time limit45 min

Pass score70%

RegulationEPA Section 608

DifficultyIntermediate

Last reviewedJun 2026

Timer starts immediately. Progress is auto-saved.

Source: EPA Section 608 (40 CFR Part 82)