- AL-REFRIG is the Alabama Board's Refrigeration Contractors Examination, delivered by Prov, Inc.
- The exam has 90 multiple-choice questions, a 4-hour limit, and a 70% passing score.
- General Knowledge and Systems & Sizing each carry 14 questions - the two heaviest domains.
- Eligibility requires 3,000 hours of experience or an approved curriculum under Code of Alabama 34-31-28(c).
What Is AL-REFRIG, Exactly?
AL-REFRIG refers specifically to the Alabama Refrigeration Contractor Certification Exam, administered under the authority of the Alabama Board of Heating, Air Conditioning & Refrigeration Contractors. The Board's own paperwork calls it the "Refrigeration Contractors Examination," while the testing vendor, Prov, Inc., lists it simply as "Refrigeration" on its exam catalog. AL-REFRIG is the shorthand this site uses to describe that same credential path - the commercial refrigeration contractor examination that leads to state certification in Alabama.
This is not a manufacturer badge or a national voluntary certificate. It is a state-regulated licensing exam tied to a specific statute, a specific testing provider, and a specific Board that controls eligibility, scheduling, and renewal. If you are researching this credential, it helps to separate it clearly from EPA Section 608 technician certification, which is a federal refrigerant-handling credential and a completely separate requirement.
Exam Format and Scoring
The current blueprint traces back to the Prov candidate bulletin revised September 4, 2026. Under that bulletin, candidates face:
- 90 computer-based multiple-choice questions
- A 4-hour time limit
- A 70% passing score
There is no separate practical stage built into the standard path. A practical examination only comes into play under Rule 440-X-3-.07, and only after a failed written attempt - more on that later. For a question-by-question look at how the exam is structured, see the AL-REFRIG Passing Score 2026: Exactly What You Need to Pass breakdown.
The 17 Domains and Their Weight
AL-REFRIG's content outline spans 17 named domains, and the official question allocation is far from evenly distributed. Two domains tie for the largest share, and several domains contribute only a couple of questions each. Here is the full allocation, in order:
| Domain | Questions |
|---|---|
| 1. General Knowledge | 14 |
| 2. Piping | 13 |
| 3. Systems & Sizing | 14 |
| 4. Maintenance/Troubleshooting | 13 |
| 5. Plan Reading | 2 |
| 6. Electrical Applications for Refrigeration Systems | 8 |
| 7. Business Organization | 1 |
| 8. Risk Management | 2 |
| 9. Project Management | 2 |
| 10. Estimating | 3 |
| 11. Safety and Environmental | 2 |
| 12. Labor Laws | 2 |
| 13. Payroll and Employment Taxes | 3 |
| 14. Financial Management | 3 |
| 15. Contracts | 2 |
| 16. Lien Laws | 2 |
| 17. Licensing Laws | 4 |
General Knowledge and Systems & Sizing are jointly the largest domains at 14 questions each, with Piping and Maintenance/Troubleshooting close behind at 13 each. Together, those four domains account for more than half the exam. Electrical Applications sits at a meaningful 8 questions, while the remaining twelve domains - many of them business and law topics - each contribute between 1 and 4 questions.
General Knowledge
Candidates need broad familiarity with refrigeration fundamentals, terminology, and code-adjacent concepts that show up across the exam, not just in one narrow area.
- Highest-weighted domain - treat it as a foundation, not a checklist item
Systems & Sizing
Equally weighted with General Knowledge, this domain covers matching refrigeration equipment and components to load and application requirements.
- Expect calculation-adjacent reasoning, not just definitions
Business Organization, Risk Management, Labor Laws, Lien Laws, Contracts, Licensing Laws
These lighter domains are still tested and still count toward the 70% threshold. Business and law topics appear throughout the exam, even though no single one of them carries heavy weight.
- Don't skip low-weight domains - they add up across 17 categories
For a domain-by-domain study plan that maps directly to this blueprint, the AL-REFRIG Exam Domains 2026: Complete Guide to All 17 Content Areas article goes deeper into each content area.
Who Sits for This Exam
AL-REFRIG is aimed at people pursuing commercial refrigeration contractor certification in Alabama - typically refrigeration technicians who already have significant field experience and are ready to operate as licensed contractors rather than as employees under someone else's certification. Employers hiring for this credential are generally commercial refrigeration contracting firms, mechanical contractors that run refrigeration divisions, and business owners who need a certified individual on staff to legally bid and perform refrigeration contracting work in the state.
Because the exam bakes in Business Organization, Risk Management, Estimating, Payroll and Employment Taxes, Financial Management, Contracts, Lien Laws, and Licensing Laws alongside the technical domains, it is built for someone who intends to run or help run a contracting operation - not purely a bench technician role.
Registration, Fees, and Eligibility
Before you can even schedule a seat, the Board has to approve your application. Eligibility is governed by Code of Alabama section 34-31-28(c), and it works through one of two routes:
- 3,000 hours of qualifying work experience, documented with notarized employer affidavits and corresponding W-2s
- Graduation from an approved heating, air conditioning, or refrigeration curriculum, documented with graduation records
All applicants must also submit citizenship or lawful-presence documentation. One important caution: the application packet still contains older eligibility wording in places, so if you're planning to qualify through an apprenticeship- or coursework-only route, confirm the current interpretation with the Board directly before you apply. For a full walkthrough of these requirements, see AL-REFRIG Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Once the Board approves your application, your eligibility to schedule the exam lasts one year from approval. Miss that window and you'll need to work through the approval process again. A complete cost breakdown across the entire certification lifecycle - application through renewal - is available in AL-REFRIG Certification Cost 2026: Complete Pricing Breakdown.
Test-Day Rules and References
AL-REFRIG is administered as an open-book exam, which changes how you should prepare compared with a closed-book credential. You can test at a Prov test center or remotely through Examroom after completing a system check.
Reference material rules are specific:
- Permitted: highlighting, permanent tabs, and formulas handwritten in ink directly in your allowed reference books
- Prohibited: loose handwritten notes, movable tabs, added photocopied sheets, and commercial exam-preparation guides brought into the test room
- Calculator: only a simple four-function calculator is allowed - no scientific or programmable models
Both the Board's reference list and Prov's reference list include the 2021 International Mechanical Code and the 2020 NFPA 70 National Electrical Code. Beyond those two, the lists diverge on other titles and editions, so confirm exactly which books are accepted with Prov before you buy anything. Since this is open-book, how you tab and organize your references matters almost as much as how well you know the material - a point covered in more detail in the AL-REFRIG Study Guide 2026: How to Pass on Your First Attempt.
Key Takeaway
Because open-book access is limited to permanent, ink-marked tabs and highlighting, build your reference book tabbing system weeks before test day - not the night before.
After You Pass: Licensing and Bonds
Passing the written exam is not the finish line. Alabama requires a separate licensing application after you pass. From there, you choose between two certification statuses:
| Status | Initial/Annual Cost | Bond Requirement | Authorizes Contracting |
|---|---|---|---|
| Active | $220 | $20,000 performance bond | Yes |
| Inactive | $110 | None | No |
Active certification also requires a registered business name. Note that $20,000 is the bond amount, not the premium you pay - the actual premium cost depends on your bonding company and financial profile. Inactive status is cheaper and bond-free, but it doesn't let you legally perform contracting work - it's essentially a placeholder status.
If your first written attempt doesn't go well, you submit a re-examination request through Form EA-5 or the Board's re-examination portal and pay another $175 exam fee. Separately, under Rule 440-X-3-.07, the Board may approve a $375 practical examination after a failed written attempt, upon written request, to be held within 6 months of the last unsuccessful written exam. That practical option is not a mandatory second stage - it's an alternate path some candidates request, not a default requirement. If you're weighing how challenging this exam actually is before you commit resources, How Hard Is the AL-REFRIG Exam? Complete Difficulty Guide 2026 and AL-REFRIG Pass Rate 2026: What the Data Shows are useful companion reads.
Keeping Certification Active
Certification isn't a one-time event. Renewal is due annually by December 31, and missing that deadline adds a $250 late fee on top of your renewal cost. Continuing education is part of the deal too:
- Normally 4 Board-approved continuing-education hours are required each year
- Up to 4 hours can carry forward to the next renewal cycle
- A first-renewal exemption applies under Rule 440-X-4-.10
- Proof of continuing education must be submitted before November 1
Timing matters here. Under Rule 440-X-4-.03, effective July 14, 2025, a $25 deficiency fee applies to hours submitted after November 1 and before January 1, and any deficiency-extension application must reach the Board before December 31. Missing these windows turns a routine renewal into an avoidable extra cost.
A Focused Way to Prepare
Given the domain weighting, a scattershot review of all 17 domains equally wastes time. A more efficient approach front-loads the heaviest domains first, then sweeps the lighter business and law domains in a shorter block near the end.
General Knowledge & Systems & Sizing
- These two domains total 28 of 90 questions - start here
- Build your open-book tab system for these topics simultaneously
Piping & Maintenance/Troubleshooting
- 26 more questions covered; combined with Week 1, you've addressed over half the exam
- Practice applying reference-book lookups under time pressure
Electrical Applications & the mid-weight domains
- Electrical Applications (8 questions), Licensing Laws (4), Estimating and Financial Management (3 each)
Remaining law/business domains & full timed practice
- Sweep Plan Reading, Risk Management, Project Management, Safety and Environmental, Labor Laws, Payroll and Employment Taxes, Contracts, Lien Laws, and Business Organization
- Run a full 90-question, 4-hour timed simulation
This sequencing isn't a generic productivity hack - it's a direct response to the fact that four domains carry more than half the point value, while the other thirteen split the rest thinly. You can practice against realistic scenarios using our Alabama refrigeration practice test platform, which mirrors the question style and pacing of the real exam.
If you're still deciding whether pursuing this certification fits your career goals, Is the AL-REFRIG Certification Worth It? Complete ROI Analysis 2026 and AL-REFRIG Salary Guide 2026: Complete Earnings Analysis lay out the broader career context. And once you're ready to lock in a test date, AL-REFRIG Exam Dates 2026: Testing Windows, Deadlines & Scheduling covers scheduling logistics and cancellation rules in detail.
Frequently Asked Questions
No. AL-REFRIG is Alabama's state contractor certification exam administered through the Board and Prov, Inc. EPA Section 608 is a separate, federal refrigerant-handling credential. Contractors typically need both, but they are independent processes with different rules.
The exam has 90 computer-based multiple-choice questions with a 4-hour time limit and a required passing score of 70%.
No. While the exam is open-book, only permitted reference materials with highlighting, permanent tabs, and ink-written formulas are allowed. Movable tabs, photocopied sheets, loose handwritten notes, and commercial exam-prep guides are prohibited.
You can request re-examination through Form EA-5 or the Board's re-examination portal and pay another $175 fee. Separately, under Rule 440-X-3-.07, you may request a $375 practical exam within 6 months of the failed attempt, though this is not a mandatory step.
No. Passing AL-REFRIG must be followed by a separate licensing application. From there, you choose Active certification ($220, requires a $20,000 performance bond and business name) or Inactive certification ($110, no bond, no contracting authorization).