Previous EPA 608 Type 1 Exam Practice Test 4

EPA 608 NEC 2023

EPA 608 Type 1 Exam Practice Test 5

Free EPA 608 Type I Exam Practice Test 5. 25 questions on system-dependent recovery capacity limits, passive recovery machine assistance methods, daily recovery machine checks, non-condensables and discharge pressure, self-contained recovery vessels, identifying refrigerant type before service, low-loss fittings, ARI 740 vacuum requirements, 80% recovery without operating compressor, technician certification types, compressor burnout acid tests, electronic leak detectors, halide torch limitations, homeowner exemption, refrigerant handling PPE, HFC venting prohibition, recovery cylinder safety features, refrigerant GWP comparison, nitrogen brazing purge, capillary tube metering, R-410A cylinder color, high-pressure manifold gauges, refrigerant identifiers, ventilation requirements, and refrigerant venting penalties.

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 45 min for 25 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.

Key facts for this test: System-dependent (passive) recovery equipment can be used on appliances containing up to 15 lbs of refrigerant. Self-contained (active) recovery machines store recovered refrigerant in a pressurized DOT cylinder; passive devices use a non-pressurized vessel. You must know the refrigerant type before beginning any recovery. All hoses used during recovery must have low-loss fittings to minimize release during connection and disconnection.

25

Questions

45 min

Time

70%

Pass

Timer starts immediately. Progress is auto-saved.

EPA 608 Type 1 Exam Practice Test 5 — Question List

Question 1: System dependent devices may be used for the appliances containing …………. of refrigerant.

20 lb
15 lb
25 lb
30 lb

Question 2: A system dependent recovery machine for small appliances requires the assistance of the following to complete the process.

Vacuum pump
External heat pump
System compressor
All the options are correct

Question 3: On daily basis all the recovery machines should be checked for ………………

Oil level
Refrigerant leaks
Oil level and refrigerant leaks
Excess non condensables

Question 4: The presence of non condensables in recovery tank causes

Higher discharge pressures
Lower discharge pressures
Higher suction pressures
Lower suction pressures

Question 5: Self contained recovery equipment stores the recovered refrigerant in ………………….

Non pressurized recovery tank
Pressurized recovery tank

Question 6: ………………….must be known before recovering the refrigerant from the system.

Refrigerant pressure
Refrigerant type
Refrigerant flow
Oil contamination

Question 7: To minimize the refrigerant loss during connection and disconnection of hoses all equipment must be fitted with …………..

Tight fittings
Low loss fittings
Zero loss fittings
Glass type fittings

Question 8: What is the vacuum level that a recovery equipment must achieve under the conditions of ARI 740?

4 inch
2 inch
6 inch
8 inch

Question 9: Recovery equipment must be able to remove …………….. of refrigerant from a system with non operating compressor.

80 %
90 %
75 %
85 %

Question 10: The persons handling, doing maintenance, service or repair of small appliances must be certified as ……………

Type I technician
Type II technician
Either Type II technician or universal technician
Either Type I technician or universal technician

Question 11: After a compressor burns out in a small appliance, a technician recovers the refrigerant and opens the system. What two things must the technician do before installing a new compressor?

Immediately install the new compressor and recharge with refrigerant
Perform an acid test on the oil, and dispose of contaminated oil as hazardous waste
Rinse the system with water to neutralize acids before installing a new compressor
Add a larger filter drier and recharge — no other steps are needed

Question 12: A technician is searching for a very small refrigerant leak in an R-134a small appliance. Which type of leak detector is BEST for detecting small HFC refrigerant leaks?

Halide torch leak detector
Electronic (heated diode or infrared) leak detector
Soap bubble solution only — electronic detectors are too expensive for small appliances
UV blacklight — it detects all refrigerant leaks without dye

Question 13: A technician uses a halide torch to check for a refrigerant leak in an R-134a refrigerator. Will the halide torch be able to detect an R-134a leak?

Yes — a halide torch detects all refrigerant types
No — a halide torch detects only refrigerants containing chlorine (CFCs and HCFCs), not HFCs like R-134a
Yes — as long as the leak is large enough to see the flame change
Only if R-12 is also present in the system

Question 14: Does EPA Section 608 require a private homeowner to be certified before servicing their OWN household refrigerator?

Yes — all persons who touch a refrigerant circuit must be EPA 608 certified
No — private individuals servicing their own household appliances are exempt from EPA 608 certification
Only if the refrigerant charge is over 2 lbs
Yes — homeowners must take the Type I exam but do not pay the certification fee

Question 15: What personal protective equipment (PPE) should a technician wear when handling refrigerant and making connections to a refrigerant system?

A dust mask and coveralls are sufficient
Safety glasses (or goggles) and protective gloves
No PPE is needed for small appliance refrigerant work
Full face shield and fire-resistant jacket

Question 16: On what date was the venting prohibition under EPA Section 608 EXTENDED to include HFC refrigerants (such as R-134a and R-410A)?

January 1, 1992 — the original venting prohibition covered all refrigerants
November 15, 1995
January 1, 2000
HFCs are still not prohibited from venting — only CFCs and HCFCs are regulated

Question 17: DOT regulations require refrigerant recovery cylinders to have which two safety features?

A pressure gauge and a sight glass
A pressure relief valve and a valve protection cap
A liquid level indicator and an oil separator
An electric shutoff valve and a temperature gauge

Question 18: Compared to R-134a, which has a GWP of approximately 1,430, approximately how much higher is the Global Warming Potential (GWP) of R-12?

R-12 has a GWP of about 1,810 — slightly higher than R-134a
R-12 has a GWP of approximately 10,900 — about 7-8 times higher than R-134a
R-12 has a lower GWP than R-134a because it is an older refrigerant
R-12 GWP = 0 because it was phased out and is no longer in use

Question 19: Why should a technician flow dry nitrogen through copper tubing while brazing (silver-soldering) the tubing?

To cool the copper tubing faster so the brazing cures more quickly
To prevent copper oxide scale from forming inside the tubing during the brazing process
To pressurize the system so leaks are visible immediately after brazing
Nitrogen is not used during brazing — it is only used after for pressure testing

Question 20: Most household refrigerators and small appliances use which type of refrigerant metering (flow control) device?

Thermostatic expansion valve (TXV) — it automatically adjusts refrigerant flow
Capillary tube — a fixed, small-diameter tube that creates a constant pressure drop
Electronic expansion valve (EEV) — computer-controlled for energy efficiency
Ball-type manual expansion valve — adjusted by the technician during service

Question 21: What is the standard color code for a new R-410A refrigerant cylinder?

Light green (same as R-22)
Pink (rose/coral pink)
Sky blue (same as R-134a)
Yellow with a gray top

Question 22: Can a technician use the same manifold gauge set for both R-22 and R-410A systems?

Yes — all manifold gauges work with all refrigerants
No — R-410A requires a special manifold gauge set rated for higher pressures
Yes — just add an adapter fitting to use R-22 gauges on R-410A
R-410A systems do not use manifold gauges — only digital scales are used

Question 23: A technician is called to service an older appliance with no legible label. The technician does not know what refrigerant is inside. What tool should be used to identify the refrigerant before beginning recovery?

Check the pressure and guess the refrigerant type from the P-T chart
A refrigerant identifier (analyzer) — it samples vapor and displays the refrigerant type
Call the manufacturer — no tool exists that can identify refrigerant type
Smell the refrigerant vapor — each refrigerant has a unique odor

Question 24: Why is it important to work in a well-ventilated area when servicing refrigerant systems, even when there is no known leak?

There is no reason — refrigerant is completely safe in any concentration
Because refrigerant vapor displaces oxygen and can cause asphyxiation in enclosed spaces
Ventilation is only required when working with flammable refrigerants like R-600a
To keep the technician cool during work — no safety reason

Question 25: What is the maximum civil penalty the EPA can impose on a person who is found to have KNOWINGLY vented regulated refrigerant in violation of Section 608 of the Clean Air Act?

$1,000 per violation — a small fine to discourage venting
Up to $44,539 per day per violation
$500 per violation — same as a parking ticket
There is no civil penalty — only criminal charges apply

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)