Construction Trade Exam Research Area

HVACR Contractor

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State of Oklahoma
Construction Industries Board

2401 N.W. 23rd Street, Suite 2F
Oklahoma City, OK 73107
Phone: (405) 521-6550
Toll Free: (877) 484-4424
Oklahoma Construction Industry Licensing Link

Exam Administrator

PSI Licensure : Certification
3210 E. Tropicana
Las Vegas, NV 89121
(800) 733-9267, Fax (702) 932-2666
PSI Web Site

Exam Type


Exam Content

Subject Areas # of
Electrical Knowledge and Controls 15
Natural Gas 12
Air Distribution Systems 25
Refrigeration and Air Conditioning Systems 20
Heating Systems 15
Safety 3

Total number of test questions: 90
Time allowed (minutes): 240
In Oklahoma, you must also pass the Mechanical Business and Law Exam unless you are already a licensed electrical contractor who is adding a classification to your license.

Go to Business and Law Offering

Books Allowed in the Exam

1. ACCA Ductulator (Duct Slide Rule), ACCA. Buy at Amazon
2. International Mechanical Code, 2015, ICC. Buy at Amazon
3. International Fuel Gas Code, 2015, ICC. Buy at Amazon
4. Modern Refrigeration and Air Conditioning, 19th or 20th Edition, Althous, Turnquist, Bowditch, Bracciano. Buy at Amazon
5. Manual N - Commercial Load Calculation, 5th Edition, 2008, ACCA. Buy at Amazon
6. Mathematics for Plumbers and Pipefitters, 8th Edition, 2012, Lee Smith. Buy at Amazon
7. Code of Federal Regulations - 29 CFR Part 1926 (OSHA), GPO - OR - (OSHA) Selections by PSI, (latest amendments). Buy from Publisher
Study materials are currently NOT available for this exam

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