A2L Refrigerant Safety Full Mock Exam
Reviewed by Craig Migliaccio, NJ Master HVACR Contractor & Founder, AC Service Tech ·
Sit a complete timed exam under test-centre conditions. You see no answers until you submit, then you get a score report by section and a full review with explanations.
Exam Format
Before You Begin
The ESCO HVAC Excellence A2L exam has 50 closed-book questions, a 120-minute minimum and a 70% pass mark. This mock draws from EPA rule text, not the ESCO question pool. Source: CTE Resource Center: ESCO Low GWP Refrigerant Safety credential.
- The timer starts when you begin and the exam submits itself when time runs out.
- Move freely with Previous, Next or the numbered navigator, and flag any question to come back to.
- No feedback is shown until you submit. Unanswered questions count as wrong.
- Nothing is sent anywhere; the exam runs entirely in your browser.
Exam Format
Before You Begin
The ESCO HVAC Excellence A2L exam has 50 closed-book questions, a 120-minute minimum and a 70% pass mark. This mock draws from EPA rule text, not the ESCO question pool. Source: CTE Resource Center: ESCO Low GWP Refrigerant Safety credential.
- The timer starts when you begin and the exam submits itself when time runs out.
- Move freely with Previous, Next or the numbered navigator, and flag any question to come back to.
- No feedback is shown until you submit. Unanswered questions count as wrong.
- Nothing is sent anywhere; the exam runs entirely in your browser.
A2L Refrigerant Safety Practice Test
These are original questions written by the Trade Exam Hub editorial team from the cited official sources. They are not real exam questions, and no exam body endorses this site. Full Mock Exams.
What the A2L Refrigerant Safety Mock Exam Covers
Each attempt draws 50 questions at random from a pool of 155. The pool covers these topics. Your score report breaks your result down the same way, so you can see which areas need more study.
| Topic | Questions in Pool | Share |
|---|---|---|
| Technology Transitions (Subpart B) | 49 | 32% |
| Labeling, Reporting and GWP | 9 | 6% |
| Leak Repair and Management (Subpart C) | 34 | 22% |
| SNAP Use Conditions (2023) | 40 | 26% |
| SNAP Use Conditions (2024) | 13 | 8% |
| Refrigerant Safety Basics | 10 | 6% |
About 58% of the pool is recall and core-concept questions. The other 42% are harder applied questions, such as scenarios, calculations or details that are easy to confuse.
Editor's Note on the A2L Refrigerant Safety Exam
The exam covers five competencies: general flammable refrigerant safety, core ACR, service safety, installation safety, and transportation and handling. Source: ESCO Specialty Certifications.
A2L Refrigerant Safety Mock Exam Pacing Plan
You have 120 minutes for 50 questions, which is about 2.4 minutes per question. Use these checkpoints to stay on pace:
| Checkpoint | Be at or past question | Elapsed time |
|---|---|---|
| First quarter | 13 | 30 min |
| Halfway | 25 | 60 min |
| Three quarters | 38 | 90 min |
If you are behind, flag any question that is taking too long and move on. Leave a few minutes at the end to go back to your flagged questions. Unanswered questions count as wrong, so give an answer to every question before time runs out.
What Score Do You Need?
To pass, you need 35 of 50 correct (70%), so you can miss up to 15 questions. This pass mark comes from the official source cited above. We suggest scoring 10 points above the pass mark on two attempts in a row before you book the real exam, because the pool here is smaller than the official bank.
Sample A2L Refrigerant Safety Mock Exam Questions
Here are three questions from the pool, with their answers and sources.
Q1. Under the Technology Transitions rule, new residential and light commercial AC and heat pump systems may not be installed with a refrigerant whose GWP is:
- 700 or greater (correct)
- 150 or greater
- 1,400 or greater
- 2,000 or greater
Source text: “residential or light commercial air-conditioning or heat pump systems using a regulated substance, or a blend containing a regulated substance, with a global warming potential of 700 or greater, except for variable refrigerant flow…” Reference: 40 CFR §84.54(c)(1).
Q2. Under §84.60, product manufacturers and importers must submit reports to EPA:
- Annually, within 90 days of the end of the reporting period (correct)
- Monthly
- Every five years
- Only when asked
Source text: “Reports must be submitted annually to EPA within 90 days of the end of the reporting period…” Reference: 40 CFR §84.60(a).
Q3. Starting January 1, 2026, the 40 CFR 84 leak repair rules apply to appliances with a full charge of:
- 15 or more pounds (correct)
- 5 or more pounds
- 50 or more pounds
- 500 or more pounds
Source text: “This section applies to refrigerant-containing appliances with a full charge of 15 or more pounds of refrigerant…” Reference: 40 CFR §84.106(a).
How to Use Your Score Report
- Sort by topic. Start your next study session with any topic where you scored below 70%.
- Read the source. Each answer cites a section or quotes its source text. Read the surrounding passage, not just the answer line.
- Drill, then retest. Use the adaptive practice test on your weak topics. It gives you more of the kinds of questions you miss. Then take this mock again for a new random set.
- Return to the guide. The A2L Refrigerant Safety guide covers exam fees, scheduling, retake rules and what to bring on test day.
Sources Behind These Questions
Questions in this pool cite these references: 40 CFR §84.54(c)(1); 40 CFR §84.54(c)(2); 40 CFR §84.54(a)(1); 40 CFR §84.54(a)(2); 40 CFR §84.54(a)(3); 40 CFR §84.54(a)(4). Each question shows its exact reference when you review your answers.
Frequently Asked Questions
How many questions are on the A2L Refrigerant Safety mock exam?
This mock has 50 questions, drawn at random from a pool of 155, so each attempt is different. The count matches the official exam.
How long do I get, and how fast should I work?
The timer is set to 120 minutes, or about 2.4 minutes per question. Aim to be past question 25 by minute 60.
What score do I need to pass the A2L Refrigerant Safety mock?
70%, which is 35 of 50 correct. That pass mark comes from the cited official source.
Are these real A2L Refrigerant Safety exam questions?
No. They are original questions written from the official sources cited in each answer, and no exam body endorses them. Use them to find weak topics, then confirm the details in the source.
Is the A2L Refrigerant Safety mock exam free?
Yes. There is no login and no sign-up, and the exam runs entirely in your browser. Nothing you enter is sent to us.