Louisiana HVAC Exam Prep: 1,450 Practice Questions for the HVACR Subclass Examination
PassProfessor’s Louisiana HVAC Exam Prep is built for candidates for the HVACR subclassification – Heat, Air Conditioning, Ventilation, Duct Work, and Refrigeration – under Louisiana’s Mechanical major classification, issued by the Louisiana State Licensing Board for Contractors. The bank holds 1,450 original practice questions: a 1,250-question HVAC core covering the trade itself, plus 200 Louisiana questions on Louisiana law, business and law, and trade application.
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
- Louisiana licenses mechanical work under the Mechanical major classification; the target subclassification here is Heat, Air Conditioning, Ventilation, Duct Work, and Refrigeration (HVACR). A mechanical license is required when project value reaches $10,000, and commercial classifications require $50,000 of net worth.
- The HVACR subclass examination is administered by PSI: open book, 50 questions, 70% to pass (35 correct), 130 minutes, $140.
- PSI’s published HVACR outline: Heating and Cooling Principles, Theory, and Equipment 8 – Refrigerants and Refrigeration 8 – Electrical Knowledge, Motors, and Controls 7 – Piping (refrigeration, hydronic, steam, process) 7 – Fuel and LP Gas 5 – Combustion Air, Chimneys, Flues and Vents 5 – Ducts, Ventilation and Exhaust 5 – Load Calculations 5.
- Louisiana’s business and law component is not an examination at all – it is a short online course taken through the LSLBC portal (about 30 to 45 minutes), separate from the PSI trade sitting.
- The subclass exam’s references key the 2021 editions – IMC 2021 and IFGC 2021 – with Manual J (2016 reprint), Modern Refrigeration and Air Conditioning (20th or 21st edition), the SMACNA HVAC Duct Construction Standards (2005, 3rd edition), and Ugly’s Electrical References. Louisiana’s field code moves to the 2024 I-Codes with the 2023 NEC on January 1, 2027.
- Licenses expire on their anniversary date, and the licensee elects a 1-, 2-, or 3-year renewal term. Louisiana imposes no continuing-education requirement on commercial or Mechanical licensees – the 6-hour annual requirement applies only to residential construction licensees.
How the practice program works
The full practice exam draws 50 questions in 130 minutes – the same length and time as the real HVACR subclass exam – weighted to PSI’s published outline across the bank’s 19 topics, and every attempt draws a fresh assortment, so no two practice exams are the same.
Each of the bank’s 19 topics has its own drill, so you can drill Louisiana 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
- Louisiana Licensing Law & Rules — 60 questions
- Louisiana Business & Law — 40 questions
- Trade Application — 100 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 Louisiana HVACR subclass examination. PRACTICE BENCHMARK ONLY — your score here is a study signal, not a result on the real exam.
Questions
Which Louisiana license does this cover?
The HVACR subclassification under the Mechanical major classification. The practice exam mirrors the 50-question HVACR subclass exam. Louisiana’s broader Mechanical Work examination (100 questions, 240 minutes) is a different instrument keyed to the 2018 code editions; this program is built to the subclass exam and its 2021 references.
Is the practice exam timed like the real one?
Yes. The full practice exam allows 130 minutes for 50 questions, matching the PSI subclass 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 Louisiana HVACR subclass examination. PRACTICE BENCHMARK ONLY — your score here is a study signal, not a result on the real exam.
Enroll: Product: /product/louisiana-hvac-exam-prep/ — $79 for the full program.