- What GA-CAC Actually Means
- Who Governs and Administers the Exam
- Exam Format: What "GA-CAC" Looks Like on Test Day
- The Four Domains Behind the Acronym
- Why the Meaning Includes Experience, Not Just a Test
- Fees, Scheduling, and Board Approval
- Approved References and Why They Matter
- What GA-CAC Means After You Pass
- Mapping Your Prep to the Acronym's Structure
- Frequently Asked Questions
- GA-CAC refers specifically to the Georgia Conditioned Air Contractor Class II (Unrestricted) License Exam.
- PSI administers the computer-based exam: 100 scored questions plus 20 unscored beta items across two 3.5-hour sessions.
- A minimum scaled score of 70 is required, and System Design accounts for 55% of exam content.
- Board approval and a $110 application fee are required before you can even schedule the exam.
What GA-CAC Actually Means
GA-CAC stands for the Georgia Conditioned Air Contractor Class II (Unrestricted) License Exam. It is not a general HVAC trivia certificate or a national credential - it is a state-specific licensing exam tied directly to Georgia's contractor licensing system for the conditioned air trade. If you've searched this acronym and found conflicting information elsewhere, it's likely referencing a completely different credential that happens to share the same letters. On this site, and in this article, GA-CAC means one thing only: the exam that allows a qualified individual to hold an unrestricted Class II conditioned air contractor license in Georgia.
Understanding this distinction matters because the requirements, fees, and content weighting described below are specific to this Georgia license. For a broader introduction, see What Is GA-CAC? or the deeper breakdown at GA-CAC Certification.
Who Governs and Administers the Exam
The exam is governed by the Georgia Construction Industry Licensing Board, Division of Conditioned Air Contractors. This board sets the eligibility rules, experience requirements, and approves candidates before they're permitted to sit for the exam. Actual test delivery - scheduling, proctoring, and scoring - is handled by PSI, a third-party testing administrator.
This two-party structure is a key part of what GA-CAC "means" in practice: the Board decides who is eligible, and PSI runs the test itself. Candidates cannot simply register with PSI on their own; Board approval must come first. This is a common point of confusion, and it's covered in more detail in GA-CAC Requirements 2026.
Exam Format: What "GA-CAC" Looks Like on Test Day
The GA-CAC exam is computer-based, multiple-choice, and reference-permitted, meaning you bring approved code books and manuals into the testing session rather than relying purely on memorization. The structure is split into two parts:
- 100 scored multiple-choice questions
- 20 additional unscored beta questions mixed in (used by the Board/PSI to evaluate future exam items)
- Two sessions of 3 hours and 30 minutes each
- A minimum final scaled score of 70 to pass
Because beta questions are unscored but indistinguishable from scored ones during the test, candidates should treat every question with equal seriousness. For a full breakdown of scoring mechanics, see GA-CAC Passing Score 2026, and for a realistic assessment of exam difficulty, read How Hard Is the GA-CAC Exam?.
Key Takeaway
Plan your reference materials and tabs before test day - with two 3.5-hour sessions and reference-based questions, time management with your code books matters as much as knowledge recall.
The Four Domains Behind the Acronym
Part of what GA-CAC "means" content-wise is defined by four exam domains. These aren't arbitrary categories - they reflect the actual scope of work a Class II unrestricted contractor is licensed to perform in Georgia.
Domain 1: Regulations, Laws, and Administrative Functions
Covers licensing law, Board rules, and administrative responsibilities contractors must follow.
- Georgia licensing statutes and Board authority
Domain 2: System Design
The largest domain at 55% of the exam. Focuses on heat-loss/gain calculations and duct design using Manuals J, D, N, and Q.
- Load calculation methodology and duct sizing principles
Domain 3: Installation
Covers proper installation practices for commercial and residential conditioned air systems, consistent with code requirements.
- Installation sequencing and code-compliant mechanical practices
Domain 4: Maintain and Repair System
Addresses ongoing service, troubleshooting, and repair knowledge expected of a licensed Class II contractor.
- Diagnostic and repair procedures for conditioned air systems
Given that System Design makes up over half the scored content, candidates who treat this domain as an afterthought put their pass at risk. For a domain-by-domain study strategy, see GA-CAC Exam Domains 2026: Complete Guide to All 4 Content Areas.
Why the Meaning Includes Experience, Not Just a Test
Unlike some certifications that just require passing a test, GA-CAC eligibility is built on documented field experience. Current Class II law requires five years of full-time qualifying experience, broken down as:
- Two years of commercial supervisory experience
- One year as a service technician or service supervisor
- Two years of installation as a lead mechanic, with at least one commercial year on systems exceeding 175,000 BTU heating and 60,000 BTU cooling
Beyond the experience itself, applicants must submit experience affidavits and references, pass a criminal background check, and hold EPA Section 608 Type II and Type III certification. Applicants must also complete Board-approved heat-loss/gain and duct-design training documented with Manuals J&D and N&Q, plus provide identity and lawful-presence documents.
This is why GA-CAC cannot be understood as "just an exam" - it's the final gate in a multi-year qualification path. The full eligibility checklist is laid out in GA-CAC Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Fees, Scheduling, and Board Approval
Once eligibility documentation is accepted, the Class II licensure-by-examination application carries a fee of $110. Board approval must be granted before scheduling with PSI - there is no way to bypass this sequence. This ordering (documentation → Board approval → PSI scheduling → exam) is a defining feature of what makes the GA-CAC process different from many trade certifications that allow direct self-registration.
If you fail the exam twice, Georgia requires completion of a Board-approved review course before attempting a third time. This policy underscores that the state treats repeated failure as a signal to revisit fundamentals, not just retry blindly.
For a complete cost breakdown including fees beyond the application, see GA-CAC Certification Cost 2026: Complete Pricing Breakdown, and for testing windows and deadlines, check GA-CAC Exam Dates 2026.
| Requirement | Detail |
|---|---|
| Application Fee | $110 |
| Scored Questions | 100 |
| Unscored Beta Questions | 20 |
| Session Length | Two parts, 3 hrs 30 min each |
| Passing Score | 70 (scaled) |
| Qualifying Experience | 5 years full-time |
Approved References and Why They Matter
Since the exam is reference-permitted, part of understanding GA-CAC means knowing exactly which materials you're allowed to bring. For exams scheduled May 1 through December 31, 2026, approved references include the 2024 Georgia Gas and Mechanical Codes with Georgia amendments and the 2023 NEC. Only Board-approved references may be used during the exam.
Tab and annotation rules are strict: permanent tabs, highlighting, and underlining are allowed, but photocopies and handwritten notes are prohibited. Bringing an unapproved or improperly marked reference can create problems at check-in, so candidates should confirm their materials well before test day.
Key Takeaway
Build your reference book's tab system around the four domains - especially System Design - so you can locate Manuals J&D and N&Q sections quickly under time pressure.
What GA-CAC Means After You Pass
Passing the exam and receiving Class II licensure isn't the end of the acronym's relevance - licenses must be renewed by November 30 of odd-numbered years, with a continuing education requirement of four CE hours per year, totaling eight hours per renewal cycle. This ongoing obligation is part of what it means to hold this license long-term, not just pass a one-time test.
On the employment side, this license is relevant to contractors and technicians who want to operate as licensed conditioned air contractors on commercial and residential systems in Georgia, including those pursuing supervisory or business-owner roles. For a look at where this credential leads professionally, see GA-CAC Jobs and GA-CAC Salary Guide 2026: Complete Earnings Analysis. If you're still weighing whether the investment of time and documentation is worthwhile, Is the GA-CAC Certification Worth It? Complete ROI Analysis 2026 walks through the tradeoffs.
Mapping Your Prep to the Acronym's Structure
Because System Design carries 55% of the scored content, your preparation timeline should reflect that weighting rather than splitting study time evenly across all four domains. A practical approach:
System Design Foundations
- Work through Manual J load calculations and Manual D duct sizing until they feel routine
- Practice locating relevant sections in your approved reference quickly
Installation and Maintain/Repair
- Review code-compliant installation sequences
- Study diagnostic and repair scenarios tied to real field situations
Regulations and Full Simulation
- Study Board rules and licensing law
- Run full-length timed practice sessions matching the two 3.5-hour format
Rather than relying on generic study advice, tie your review sessions to the actual exam structure. A full first-attempt strategy, including how to pace across the two sessions, is covered in GA-CAC Study Guide 2026: How to Pass on Your First Attempt. For a condensed reference of must-know facts, bookmark GA-CAC Cheat Sheet 2026: One-Page Review of Must-Know Facts, and practice with realistic questions on our GA-CAC practice test platform before scheduling your real exam through PSI.
Frequently Asked Questions
On this site, yes - GA-CAC specifically means the Georgia Conditioned Air Contractor Class II (Unrestricted) License Exam. Other organizations may use similar-looking acronyms for unrelated credentials, so always confirm the context.
No. The Georgia Construction Industry Licensing Board must approve your application first. Only after Board approval can you schedule your exam session with PSI.
After two failed attempts, Georgia requires completion of a Board-approved review course before you're permitted to attempt the exam a third time.
System Design, since it represents 55% of the scored exam content and covers Manuals J, D, N, and Q for heat-loss/gain and duct design calculations.
Licenses renew by November 30 of odd-numbered years, requiring four continuing education hours per year, totaling eight hours per renewal cycle.