- The R-39R/C-39 trade exam itself costs $66 per attempt through PSI Services LLC.
- The Arizona Statutes and Rules Exam (SRE) is a separate $61 online test most candidates overlook.
- Retakes require a 30-day wait; a fourth or later attempt requires a 90-day wait, adding real cost if you fail early.
- The exam covers 80 questions across 12 domains in 210 minutes at a 70% passing requirement.
The Core Trade Exam Fee
If you're planning your budget for the Arizona R-39R/C-39 (CR-39) Air Conditioning and Refrigeration (Residential/Commercial) Examination, the headline number is straightforward: the trade examination itself costs $66 per attempt, administered through PSI Services LLC on behalf of the Arizona Registrar of Contractors (ROC). That fee covers a single sitting of the 80-question, 210-minute exam, delivered as computer-based multiple choice with either test-center or remote-proctored delivery.
What many candidates don't budget for is that PSI may insert 5-10 unscored experimental questions into your test session. These questions look identical to scored items, count toward your total time, but do not affect your final result. They're a normal part of the delivery model and not something to worry about strategically - you simply answer every question you see and move on.
The Separate SRE Cost Candidates Forget
Beyond the trade exam, Arizona requires a distinct Statutes and Rules Exam (SRE), taken online, which costs $61. This is not a subsection of the trade exam and not bundled into the $66 fee - it's a completely separate product with its own registration, its own content, and its own cost. Candidates budgeting only for the trade exam are frequently surprised when the SRE bill arrives on top of it.
Combined, a single clean pass through both required exams runs $127 in direct testing fees ($66 + $61), before any study materials, code books, or license application costs. If you need to retake either exam, that number climbs quickly. For a full breakdown of what's covered on the statutes side versus the trade content, see the AZ-ACR Requirements 2026 guide, which walks through how the SRE fits into overall eligibility.
Key Takeaway
Budget for two exam fees, not one. The $66 trade exam and the $61 SRE are independent costs that both must be cleared before a license application moves forward.
Retake Fees and Waiting Periods
Every failed attempt on the R-39R/C-39 trade exam means paying the $66 fee again. There's no reduced "retake rate" - each sitting is billed at full price. But the bigger financial risk isn't the fee itself; it's the waiting period that stacks on top of a fail.
- First through third attempt: a 30-day wait before you can retest.
- Fourth attempt and beyond: a 90-day wait, which can meaningfully delay licensure and any project or hiring timelines tied to it.
A candidate who fails twice isn't just out $132 in fees - they've also lost 60+ days of eligibility to work under the license they're pursuing. This is exactly why getting the content mastery right the first time matters more than saving a few dollars on prep materials. If you're unsure how tough the exam actually is relative to your current knowledge, the How Hard Is the AZ-ACR Exam? guide breaks down where most first-time candidates struggle.
Where Your Study Time (and Money) Should Go
Because every attempt costs money, it makes sense to weight your preparation toward where the exam actually puts its questions. The trade outline allocates 80 questions across 12 domains as follows:
| Domain | Question Count |
|---|---|
| Refrigeration | 12 |
| Air Conditioning | 12 |
| Warm Air Heating | 12 |
| Controls and Motors | 8 |
| Boilers | 4 |
| Ventilation | 4 |
| Evaporative Coolers | 4 |
| Fuel Piping Systems | 5 |
| Water Piping Systems | 5 |
| Steam, Hot, Chilled, and Condensing Water | 5 |
| Testing, Balancing, and Inspections | 5 |
| Sizing and Estimating | 4 |
Refrigeration, Air Conditioning, and Warm Air Heating are the joint-largest domains at 12 questions each - together they account for a substantial share of the 80-question exam. Spending your prep budget on strong study material for these three areas gives you more return per hour than chasing the smaller four-question domains equally hard.
Controls and Motors
At 8 questions, this is the fourth-heaviest domain and often underestimated by candidates who focus purely on refrigeration cycles.
- Understand motor types, starting mechanisms, and control sequencing as they apply across cooling and heating equipment
- Expect scenario questions that connect a control failure to a system symptom
For a full walk-through of every content area, including how each domain's question style differs, see the AZ-ACR Exam Domains 2026 guide. And if you want a condensed reference you can review the week before your test date, the AZ-ACR Cheat Sheet 2026 compiles the must-know facts in one page.
A Cost-Conscious Study Schedule
Since every wasted week theoretically extends the risk of paying for a retake, it helps to sequence study by domain weight rather than alphabetically or by textbook order.
Refrigeration and Air Conditioning
- Cover the two 12-question domains first since they carry the most exam weight
- Practice original scenario-style questions rather than pure definitions
Warm Air Heating and Controls and Motors
- Round out the third 12-question domain plus the 8-question control systems area
The Mid-Weight Domains
- Fuel Piping, Water Piping, Steam/Hot/Chilled/Condensing Water, and Testing/Balancing/Inspections at 5 questions each
Smaller Domains and Full Review
- Boilers, Ventilation, Evaporative Coolers, and Sizing and Estimating at 4 questions each
- Take timed practice sessions to simulate the 210-minute limit
This isn't a generic weekly template - it's built directly around the AZ-ACR question allocation so your limited study hours track the actual point value of each domain. For a deeper strategy on pacing and first-attempt success, the AZ-ACR Study Guide 2026 expands on this approach.
Reference Materials and Code Book Costs
One cost variable candidates control directly is which reference materials they bring into the open-book portion of the exam. The trade outline names three approved open-book references:
- OSHA 29 CFR Part 1926, or PSI's selected equivalent, with the latest available amendments
- The 2018 International Fuel Gas Code
- The 2018 International Mechanical Code
Any other textbooks listed on the outline are study-only references - you can learn from them ahead of time, but you cannot bring them into the testing room. Buying the wrong edition, or bringing a newer code book than the 2018 version specified, wastes money and won't help you during the actual test.
If you're testing remotely, note that scratch paper and breaks are not permitted during the remote-proctored session, which changes how you should prepare your reference materials compared to a test-center sitting. A silent, nonprinting, nonprogrammable, nonscientific calculator is permitted under the general PSI candidate bulletin, so factor that small purchase into your prep budget if you don't already own one.
Licensing Costs Beyond the Exam
The exam fees are only part of the total cost of becoming licensed. Arizona contractor licenses renew biennially, and license fees along with bond obligations are handled entirely separately from the PSI examination charges. Before you even sit for the exam, the qualifying party ordinarily needs four years of practical or management trade experience, including two within the preceding ten years - though qualifying technical training can substitute for up to two years of that requirement.
It's also worth noting a timing detail that has cost implications: exam results must fall within the two years preceding the license application. If you pass the trade exam and SRE but delay your license application beyond that window, you may need to retest and pay the fees again. For the full eligibility picture, review the AZ-ACR Requirements 2026 article in detail.
Key Takeaway
Treat the exam fees, the license/bond fees, and the biennial renewal fees as three distinct budget lines - they are governed separately and none of them substitute for the others.
Building a Realistic Budget Timeline
Putting the pieces together, a candidate's direct testing cost picture looks like this: $66 for the trade exam, $61 for the SRE, plus whatever code book editions and calculator you need to acquire if you don't already own the 2018 International Fuel Gas Code, the 2018 International Mechanical Code, or an OSHA 29 CFR Part 1926 reference. From there, license fees and bond costs apply separately once you're ready to submit your application.
The single biggest controllable cost factor is avoiding retakes. Since the trade outline was revised June 8, 2023, and the general PSI candidate bulletin carries a February 18, 2026 date, it's worth confirming you're studying against current content before committing exam-day money. Using structured practice questions modeled on the actual domain weighting - available through our practice test platform - is one of the most direct ways to reduce the odds of paying for a second attempt.
For candidates weighing whether the investment pays off relative to career prospects in Arizona's HVAC trade, the Is the AZ-ACR Certification Worth It? ROI Analysis article and the AZ-ACR Salary Guide 2026 both provide additional context on what the certification opens up beyond the exam-day costs.
Frequently Asked Questions
The R-39R/C-39 (CR-39) trade examination costs $66 per attempt through PSI Services LLC. This fee is charged every time you sit for the exam, including retakes.
No. The Arizona Statutes and Rules Exam (SRE) is a separate online exam costing $61, taken independently of the $66 trade exam.
The first through third failed attempts require a 30-day waiting period before retesting. A fourth or later attempt requires a 90-day waiting period, which extends both your timeline and your cost exposure.
Approved open-book references are OSHA 29 CFR Part 1926 (or PSI's selection) with the latest amendments, the 2018 International Fuel Gas Code, and the 2018 International Mechanical Code. Other textbooks on the outline are for study only and cannot be brought into the test.
No. Arizona contractor license fees and bond obligations are handled separately from the PSI examination fees, and licenses renew biennially under a distinct fee structure.