Ohio HVAC Exam Prep: 1,450 Practice Questions for the OCILB Commercial HVAC Contractor Exams
PassProfessor’s Ohio HVAC Exam Prep is built for candidates for the Ohio Construction Industry Licensing Board (OCILB) commercial HVAC contractor license. The bank holds 1,450 original practice questions: a 1,250-question HVAC core covering the trade itself, plus 200 Ohio questions on Ohio licensing law and the Ohio trade exam’s published content areas.
Every question is an original item written for this program, and every question comes with an explanation for every answer: why the keyed answer is right and why each other option is wrong, grounded in the cited code, standard, manual, or rule.
The exam, in facts
- Ohio’s commercial HVAC contractor credential is issued by the Ohio Construction Industry Licensing Board (OCILB). Ohio’s statutory HVAC contractor scope covers commercial work; it does not extend to residential buildings.
- The trade exam is administered by PSI: open book, 100 scored questions plus 10 unscored pretest questions, 240 minutes, with a 70% passing score. A separate 50-question Business & Law exam (70% to pass, 2 hours) is also required, keyed to the NASCLA Ohio Contractor’s Guide, 4th edition.
- PSI’s published trade outline: General Knowledge and Requirements 10 – Warm Air Heating and Air Distribution 25 – Ventilation and Exhaust Systems 15 – Air Conditioning 10 – Piping Systems 10 – Equipment and Appliances 20 – Testing and Inspection 10.
- Trade references include the Ohio Mechanical Code 2024 (the 2021 International Mechanical Code with Ohio amendments, with Chapter 11 keyed to the 2024 IMC), the International Fuel Gas Code 2021, and Modern Refrigeration and Air Conditioning, 22nd edition.
- Candidates qualify at 18 or older, as a U.S. citizen or legal alien, with 5 years as a tradesperson immediately before applying (3 years on the registered-engineer path), and the licensee must carry $500,000 in liability insurance.
- The license is issued to the individual and assigned to a contracting company; an unassigned license is inactive. Contractors display “OH LIC#” in letters at least 2 inches high on both sides of their vehicles, renew annually at $60 per license, and complete 10 hours of continuing education a year (8 hours for members of the Board’s compliant-contractor program).
How the practice program works
The full practice exam draws 100 questions in 240 minutes – the same length and time as the real trade exam – weighted to PSI’s published outline across the bank’s 24 topics, and every attempt draws a fresh assortment, so no two practice exams are the same.
Each of the bank’s 24 topics has its own drill, so you can drill Ohio licensing law on its own or work the trade topics one at a time:
- Refrigeration Principles & Components — 114 questions
- Refrigerants, Recovery & Handling — 55 questions
- Cooling Systems: Service, Diagnostics & Repair — 91 questions
- Heating Systems — 212 questions
- Air Distribution, Duct Design & Airflow — 114 questions
- Controls & Electrical for HVAC — 110 questions
- Piping, Brazing & Gas Piping — 65 questions
- Ventilation, Venting, Combustion Air & IAQ — 87 questions
- Load Calculation & System Design — 41 questions
- Safety, Testing & Code Practice — 85 questions
- Commercial Refrigeration Systems — 41 questions
- Equipment Installation & Commissioning — 75 questions
- Hydronics & Boilers — 35 questions
- Business & Law Practice — 50 questions
- Plan Reading & Construction Documents — 25 questions
- Packaged & Manufactured Systems — 50 questions
- Ohio Licensing Law & Rules — 65 questions
- Warm Air Heating & Air Distribution — 27 questions
- Equipment & Appliances — 23 questions
- Air Conditioning & Refrigeration — 23 questions
- Ventilation & Exhaust — 20 questions
- Piping & Fuel Gas — 19 questions
- Testing, Inspection & General Code — 15 questions
- General Knowledge & Code Administration — 8 questions
Try the free 12-question sample first — it uses a fixed set of questions so you can see exactly how explanations read before you buy.
Our practice exam is scored against a 70% practice benchmark, set to mirror PSI’s published 70% passing standard for the Ohio trade exam. PRACTICE BENCHMARK ONLY — your score here is a study signal, not a result on the real exam.
Questions
Which Ohio license does this cover?
The OCILB commercial HVAC contractor license. Ohio licenses the individual, who assigns the license to a contracting company. The Ohio portion of this bank covers Ohio licensing law and administration alongside the trade outline, and the law and business material connects to the separate Business & Law exam every candidate also takes.
Is the practice exam timed like the real one?
Yes. The full practice exam allows 240 minutes for 100 questions, matching the PSI trade exam. The real exam is open book; how you use references while practicing is up to you.
Are these real exam questions?
No. Every question is original to PassProfessor, written from PSI’s published exam outline and the cited references. Nothing here is copied or paraphrased from a licensing exam or a competitor’s bank.
What does the 70% benchmark mean?
Our practice exam is scored against a 70% practice benchmark, set to mirror PSI’s published 70% passing standard for the Ohio trade exam. PRACTICE BENCHMARK ONLY — your score here is a study signal, not a result on the real exam.
Enroll: Product: /product/ohio-hvac-exam-prep/ — $79 for the full program.