- Understanding the 2026 ACG Certification Cycle
- The July 8, 2026 Application Window
- How Testing Appointments Actually Work
- Fees Tied to Your Application Category
- What You're Tested On Once You Get a Seat
- Building Your Prep Timeline Around the Calendar
- Verifying the Handbook Before You Register
- After You Pass: Recertification Dates to Track
- Frequently Asked Questions
- The 2026 cycle referenced by ACG centers on a July 8, 2026 application that includes one exam attempt.
- Testing happens through Kryterion/Webassessor at test centers, with select ACG event exams delivered paper-and-pencil instead.
- You get 4 hours 15 minutes plus a separate 10-minute break for 125 multiple-choice questions.
- Fees run $350-$2,500 depending on your membership status, with event-registered candidates having testing bundled in.
Understanding the 2026 ACG Certification Cycle
Unlike testing programs that run rolling appointments year-round with no fixed intake, the Certified Commissioning Authority credential administered by the AABC Commissioning Group (ACG) through its ACG Certification Council is organized around defined application cycles. For 2026, the published application date is July 8, 2026, and that application includes one exam attempt as part of the submission. This is not a generic "testing window" concept borrowed from other credentialing programs - it reflects how ACG structures the CxA pathway: you apply, your eligibility documentation is reviewed, and your exam access is tied to that approved application.
If you're still mapping out whether you even qualify to apply, start with CxA Requirements 2026: Eligibility, Prerequisites & How to Qualify before you lock in a date on your calendar. Eligibility review happens before testing access is granted, so the application date matters more than a simple registration click.
The July 8, 2026 Application Window
The July 8, 2026 application cycle is the current reference point for candidates planning ahead this year. A few mechanics to understand about how this works in practice:
- The application itself includes one exam attempt - you are not purchasing a seat separately from applying.
- Candidates who are attending a qualifying ACG event have their testing included in the paid event registration, which is a separate path from the standalone application.
- An optional workshop exists, but it is priced and registered separately from both the application and any event registration.
This matters for sequencing: if you're planning to test at an ACG event, your scheduling logic runs through the event registration calendar, not the standalone application date. If you're applying independently, July 8, 2026 is the date to build your preparation plan around.
Key Takeaway
Decide early whether you're pursuing the standalone application path or an event-based path - the fee structure, included testing, and your prep deadline all shift depending on which route you take.
How Testing Appointments Actually Work
Once your application is approved, delivery happens primarily through Kryterion/Webassessor at test centers. This is the standard delivery channel for candidates who apply outside of an event. Separately, selected ACG event exams are administered paper-and-pencil on-site rather than through a computer-based testing center - so if you're testing at an event, expect a different physical format than a Kryterion center exam.
At-home or remote proctoring is not a verified option for this credential, so don't plan your scheduling around the assumption that you can test from a home office. Build your travel and appointment logistics around either a physical test center or an ACG event location.
- Format: 125 multiple-choice questions
- Time allowed: 4 hours 15 minutes, plus a separate 10-minute break that does not count against your testing time
- Book type: closed book
- Tools permitted: a scientific non-programmable calculator
- No adaptive delivery has been verified - expect a fixed-form exam experience, not one that adjusts difficulty based on your answers
For a deeper breakdown of how that time and question count actually feel on exam day, see How Hard Is the CxA Exam? Complete Difficulty Guide 2026.
Fees Tied to Your Application Category
Fees for the July 8, 2026 application cycle are tiered by membership status rather than being a flat rate for everyone:
| Candidate Category | Fee | Notes |
|---|---|---|
| Certified Member-company employee | $350 | Lowest tier, tied to active ACG membership status |
| Employee of a company with a complete pending membership application | $400 | Applies while membership is being processed |
| All others | $2,500 | Non-member-affiliated applicants |
| Qualifying event candidates | Included | Testing is bundled into paid event registration |
The optional workshop is priced separately from all of the above. Given how wide the gap is between the member-tier and non-member fee, it's worth confirming your company's ACG membership status before you file your application - the math has real implications for how you budget toward this credential. For a full line-item view of what the total investment looks like across prep materials and recertification, check CxA Certification Cost 2026: Complete Pricing Breakdown.
What You're Tested On Once You Get a Seat
Scheduling only matters if you actually walk in prepared. The 125-question exam is built around seven weighted content domains, and two of them make up nearly half the test by themselves:
Domain 3: Conducting Commissioning Activities (24%)
The single largest domain on the exam. This covers executing the functional testing, verification, and issue-resolution work that defines the commissioning process once design and documentation are in place.
- Functional performance test execution and sequencing
- Issue logging, tracking, and resolution workflows
- Coordination across trades during testing phases
Domain 6: Conducting Existing Building Commissioning (23%)
Nearly tied with Domain 3 in weight, this domain focuses on retro-commissioning and ongoing performance verification in buildings that are already occupied and operating.
- Assessing existing systems against current operating requirements
- Identifying performance gaps in occupied buildings
- Retro-commissioning scoping and investigation
The remaining five domains - Preparing Commissioning Documentation (19%), Managing Commissioning Projects (18%), Conducting On-Going Commissioning (7%), Completing Warranty Phase Activities (5%), and Managing Training Activities (4%) - round out the remaining question volume but should not be neglected simply because they carry smaller percentages. For a complete walk-through of every domain's subtopics, see CxA Exam Domains 2026: Complete Guide to All 7 Content Areas.
The exam is also scored against a criterion-referenced total-score passing standard, meaning your pass/fail outcome is based on your overall score against a fixed benchmark rather than a ranking against other candidates. Details on exactly what that benchmark means for your preparation are covered in CxA Passing Score 2026: Exactly What You Need to Pass.
Building Your Prep Timeline Around the Calendar
Because the exam date is fixed to an application cycle rather than something you can book on a whim, your study plan should be reverse-engineered from the application deadline, not from an arbitrary "study for X weeks" rule. Given that Domains 3 and 6 together account for 47% of the exam, your final weeks before test day should weight toward those two areas disproportionately.
Documentation & Project Management Foundations
- Review Domain 2 (Preparing Commissioning Documentation, 19%) and Domain 1 (Managing Commissioning Projects, 18%)
- Build familiarity with the current study reference, Building Systems Commissioning Guideline Part 1
Core Activity Execution
- Deep focus on Domain 3, Conducting Commissioning Activities - the largest single domain
- Practice question sets targeting functional testing scenarios
Existing Building & On-Going Work
- Shift to Domain 6, Conducting Existing Building Commissioning, the second-largest domain
- Layer in Domain 7, Conducting On-Going Commissioning
Lower-Weight Domains & Timed Review
- Close the gap on Domains 4 and 5 (Managing Training Activities, Completing Warranty Phase Activities)
- Run a full-length 125-question timed mock within a 4-hour-15-minute window
If you want a structured version of this exact approach, CxA Study Guide 2026: How to Pass on Your First Attempt walks through it in more depth, and running realistic timed sets through our practice test platform is one of the most direct ways to simulate the actual 125-question, closed-book format before your scheduled date arrives.
Verifying the Handbook Before You Register
One detail every 2026 candidate should check directly rather than relying on memory or secondhand summaries: the currently linked 2026 handbook shows mixed revision indicators, with some sections pointing to a February 17 revision and others to a July 10 revision. This inconsistency means candidates should pull the live handbook directly from ACG before finalizing study plans or assuming any single date reflects the most current policy.
Separately, the official study reference changed on March 10, 2025, to Building Systems Commissioning Guideline Part 1. If you've been studying from an older reference document or a secondhand study guide that hasn't been updated, you may be working from outdated material. Cross-check your source list against the current handbook before you commit weeks of study time to it.
After You Pass: Recertification Dates to Track
Passing the exam isn't the end of the calendar-watching. The CxA credential runs on a three-year recertification cycle, and the requirements are concrete:
- One project completed within the cycle
- 50 total points, including a minimum of 25 mandatory continuing education (CE) points
- Annual independence maintenance confirmation - this is not a one-time check, it recurs every year of the cycle
- Recertification fees of $200 for member or applicant-company employees, or $2,500 for all others
Notice that the fee tiering mirrors the initial application structure almost exactly - membership status continues to matter well past your initial pass. Building a habit of tracking your annual independence confirmation alongside your CE point accumulation will save you from a scramble near the end of your three-year window.
With 1,216 active holders recorded as of January 1, 2026, this is a credential maintained by a relatively small, specialized population - which is also reflected in who actually hires for it. For context on how that population translates into career outcomes, see CxA Salary Guide 2026: Complete Earnings Analysis and Is the CxA Certification Worth It? Complete ROI Analysis 2026.
Key Takeaway
Recertification fees and independence checks follow the same membership-tier logic as the initial exam - staying active with ACG membership keeps your long-term costs lower across both cycles.
If you're curious how the pass outcomes have trended for candidates who've gone through recent cycles, CxA Pass Rate 2026: What the Data Shows breaks down the reported figures without guesswork. And once you've got your dates and documentation lined up, running timed question sets through our CxA practice exams before your scheduled test day remains one of the clearest ways to confirm you're actually ready for the 4-hour-15-minute format rather than just familiar with the material.
Frequently Asked Questions
The referenced 2026 cycle centers on a July 8, 2026 application that includes one exam attempt. Testing access follows approval of that application, so the application date functions as the effective deadline rather than a separately scheduled exam date.
At-home proctoring is not a verified option. Standard delivery runs through Kryterion/Webassessor test centers, with select ACG event exams delivered paper-and-pencil on-site instead.
You have 4 hours 15 minutes to answer 125 multiple-choice questions, plus a separate 10-minute break that is not deducted from your testing time.
Yes. Qualifying event candidates have testing included in their paid event registration rather than applying through the standalone application fee structure, and the exam at these events may be administered paper-and-pencil.
Pull the current ACG handbook directly. The linked 2026 handbook shows mixed February 17 and July 10 revision indicators, so confirm the live version rather than relying on a single cited date before finalizing your application plans.