AL-REFRIG Study Guide 2026: How to Pass on Your First Attempt

What the AL-REFRIG Exam Actually Tests

The Alabama Board of Heating, Air Conditioning & Refrigeration Contractors calls it the Refrigeration Contractors Examination, while the testing provider Prov, Inc. lists it internally as "Refrigeration." On this site we refer to it as AL-REFRIG for short, and it specifically targets candidates seeking commercial refrigeration contractor certification in Alabama. If you're still getting oriented, our overview on what AL-REFRIG is and the companion piece on AL-REFRIG's meaning are good starting points before you dive into study mode.

This exam is not a general HVAC test. It's built around the specific technical and business knowledge a licensed Alabama refrigeration contractor needs to run legal, safe, code-compliant commercial refrigeration work. That means the blueprint blends hands-on system knowledge (piping, sizing, troubleshooting) with the business, legal, and financial content the Board expects a licensed contractor to know before pulling permits or signing contracts.

Exam Format, Timing, and Question Allocation

The current blueprint comes from the Prov candidate bulletin revised September 4, 2026. Candidates get 90 computer-based multiple-choice questions and a 4-hour time limit, with a passing score of 70%. That's a generous amount of time per question if you pace yourself, but the breadth of content across 17 domains means time management still matters.

Here's how the official question counts break out across all 17 domains, in order:

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. For a full walkthrough of every content area, see our complete guide to all 17 AL-REFRIG domains.

Eligibility Before You Can Sit for the Exam

You can't just register and show up. Board approval is required before you can even schedule a testing appointment, and once approved, your eligibility window lasts one year from the approval date. Miss that window and you'll need to reapply.

Under Code of Alabama section 34-31-28(c), eligibility comes down to one of two paths:

• 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 caveat: the application packet still contains older eligibility wording, so if you're planning to qualify through an apprenticeship- or coursework-only route, confirm the current requirements directly with the Board before you submit anything. For a deeper dive into every eligibility nuance, read our full AL-REFRIG requirements breakdown.

Fees, Scheduling, and Rescheduling Rules

The written examination fee is $175, paid directly to the Board and non-refundable once submitted. If you pay by credit card, expect a 4% service fee on top of that. Budget for this as a real cost of the process, not just an application formality - our certification cost breakdown walks through every fee you'll encounter from application through renewal.

Once you're scheduled, plan carefully. If you need to cancel or reschedule, you must notify Prov at least 3 business days before your appointment, or you'll forfeit the examination fee entirely. There's no partial credit for late cancellations, so lock in a test date only when you're confident in your preparation. For guidance on when testing windows open and how scheduling actually works, see our article on AL-REFRIG exam dates and scheduling.

Approved References and Open-Book Rules

This is an open-book exam, which changes how you should prepare. Testing is available at Prov test centers or remotely through Examroom after completing a system check. But "open-book" comes with strict limits on what you can actually bring in:

• Allowed: A simple four-function calculator, highlighting in your reference books, permanent tabs, and formulas handwritten in ink directly in the book margins.
• Prohibited: Other handwritten notes, movable tabs, added photocopied sheets, and exam-preparation guides brought into the testing room.

The 2021 International Mechanical Code and the 2020 NFPA 70 National Electrical Code both appear on the Board's and Prov's reference lists, so those two codes are safe bets to own and tab heavily. Beyond those two, the lists diverge on other titles and editions - confirm exactly which books and editions are accepted with Prov before you spend money. This is one of the most common ways candidates waste study time and cash, so treat it as a pre-registration checklist item rather than an afterthought. If you're shopping for materials, our guide on the AL-REFRIG cheat sheet can help you prioritize which formulas and code sections deserve tabs.

Domain-by-Domain Study Priorities

Rather than studying domains in numerical order, prioritize by question weight and by how much unfamiliar material each domain typically contains for working technicians moving into contractor certification.

The remaining domains - Plan Reading, Electrical Applications for Refrigeration Systems, and the business/legal cluster (Business Organization, Risk Management, Project Management, Estimating, Safety and Environmental, Labor Laws, Payroll and Employment Taxes, Financial Management, Contracts, Lien Laws, and Licensing Laws) carry lighter individual weight, but collectively they still represent a meaningful chunk of the exam. Electrical Applications alone carries 8 questions - more than several business domains combined - so don't skip it. Licensing Laws, at 4 questions, deserves attention since it directly governs how you'll operate once certified. Business and law topics are woven throughout this exam because the Board wants contractors who understand the legal and financial side of running a business, not just the technical side. For the full detail on every one of these 17 areas, our domain-by-domain guide covers each in depth.

A Realistic Study Timeline

Generic study techniques like spaced repetition or timed practice blocks only help if they're aimed at the right material. Here's how to sequence your prep around the actual AL-REFRIG blueprint rather than studying domains in whatever order a textbook happens to present them.

Not sure how difficult this exam feels relative to your current experience level? Our article on how hard the AL-REFRIG exam actually is breaks down what makes candidates struggle, and our companion piece on the 70% passing score explains exactly how scoring works domain by domain. You can also run full-length simulated exams on our practice test platform to get comfortable with the 90-question, 4-hour format before test day.

If You Don't Pass on the First Try

If your first attempt doesn't clear 70%, you have a defined path forward. Submit a re-examination request through Form EA-5 or the Board's re-examination portal, and pay another $175 examination fee - the same fee structure as your original attempt.

There's also a lesser-known option under Rule 440-X-3-.07: the Board may approve a $375 practical examination after a failed written attempt, upon written request. This practical exam must be held within 6 months of your last unsuccessful written attempt, and it is not a mandatory second stage - it's an alternative path some candidates pursue rather than retaking the written exam again. Weigh the cost and format difference carefully before choosing this route.

Whichever path you take, treat a failed attempt as data. Go back to your domain-level performance, identify which of the 17 domains cost you the most points, and adjust your next study cycle accordingly rather than repeating the same generic review. For context on how other candidates fare, our piece on the AL-REFRIG pass rate discusses what the available data shows.

After You Pass: Certification and Renewal

Passing the exam is not the finish line - it must be followed by a separate licensing application to the Board. There are two certification tracks:

• Active certification: $220 initially and annually, requires a business name and a $20,000 performance bond (that figure is the bond amount, not the premium you'll pay for it).
• Inactive certification: $110 initially and annually, no bond required, but it does not authorize you to perform contracting work.

Renewal is due annually by December 31, and late renewal adds a $250 fee on top of your normal renewal cost. Continuing education is generally 4 Board-approved hours per year, with up to 4 hours carried forward to the next cycle, and a first-renewal exemption under Rule 440-X-4-.10. Proof of continuing education must be submitted before November 1; under Rule 440-X-4-.03 (effective July 14, 2025), hours submitted after November 1 but before January 1 trigger a $25 deficiency fee, and any deficiency-extension application must reach the Board before December 31.

For the complete cost picture across both application and renewal cycles, see our full pricing breakdown, and if you're weighing whether the investment makes sense for your career, our ROI analysis and salary guide cover the bigger picture. Curious who's actually hiring certified contractors in Alabama? Check out our AL-REFRIG jobs overview.

Frequently Asked Questions