EPA Section 608 Refrigerant Exam Questions & Answers 2026 (21–30)

Question 1

Owners of appliances normally containing 50 pounds or more of refrigerant must:

TheoryPractice · Accepted Answer

Keep records of refrigerant added and repair leaks above the threshold. Owners and operators of appliances with a full charge of 50 pounds or more must keep servicing records and must repair leaks that exceed the applicable annual leak-rate threshold within the required time.

Question 2

Under the current leak-repair rule, the annual leak-rate trigger for comfort-cooling appliances is:

TheoryPractice · Accepted Answer

10%. For comfort-cooling appliances with a charge of 50 pounds or more, leaks must be repaired when the annual leak rate exceeds 10%. (Commercial refrigeration is 20% and industrial process refrigeration is 30%.)

Question 3

Under the current leak-repair rule, the annual leak-rate trigger for commercial refrigeration is:

TheoryPractice · Accepted Answer

20%. Commercial refrigeration appliances with a 50-pound-or-greater charge must have leaks repaired when the annual leak rate exceeds 20%.

Question 4

The international treaty that phases out the production of ozone-depleting substances is the:

TheoryPractice · Accepted Answer

Montreal Protocol. The Montreal Protocol is the international agreement under which nations phase out the production and consumption of ozone-depleting substances such as CFCs and HCFCs.

Question 5

When recovering refrigerant into a recovery cylinder, you must:

TheoryPractice · Accepted Answer

Weigh it and never exceed 80% capacity. Recovery cylinders must be weighed so they are never filled beyond 80% of capacity. Overfilling leaves no room for liquid expansion and can cause the cylinder to rupture. A float or scale shutoff helps prevent overfilling.

Question 6

Recovered refrigerant of an unknown or mixed type should be:

TheoryPractice · Accepted Answer

Sent for reclamation or destruction, never reused. Mixed or contaminated refrigerant cannot be identified or cleaned to spec on site. It must be sent off for reclamation or destruction; it must never be vented or charged into a system.

Question 7

The substitute-refrigerant program that reviews and lists acceptable alternatives is called:

TheoryPractice · Accepted Answer

SNAP. EPA's Significant New Alternatives Policy (SNAP) program evaluates and lists substitutes for ozone-depleting substances as acceptable or unacceptable for specific end uses.

Question 8

Which property describes how much a refrigerant contributes to thinning the ozone layer?

TheoryPractice · Accepted Answer

ODP. Ozone-Depletion Potential (ODP) measures a substance's ability to destroy stratospheric ozone, relative to CFC-11 which has an ODP of 1.0. Global-Warming Potential (GWP) is a separate measure of climate impact.

Question 9

An access (piercing/saddle) valve installed to recover from a sealed system that has no service port should be:

TheoryPractice · Accepted Answer

Leak-checked, because it can be a long-term leak source. Saddle/piercing valves can leak over time. After use they should be leak-checked, and many technicians remove or properly seal them rather than leaving an unreliable long-term connection.

Question 10

Technician certification under Section 608 is:

TheoryPractice · Accepted Answer

Does not expire. EPA Section 608 technician certification does not expire and is valid nationwide. There is no renewal requirement under the current rule.

EPA Section 608 Refrigerant Exam Questions & Answers 2026 (21–30)

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