Oklahoma HVACR Unlimited Contractor

This exam tests a candidate’s knowledge of the installation, maintenance, repair, fabrication, alteration or extension of air conditioning, refrigeration, heating, and ventilation, including ductwork, within a complete system unlimited in horsepower or tons, and related appurtenances, apparatus, piping vessels, ducts and insulation.

$595.00

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Required Books 

The references listed below have been used to create the test questions and are used in our seminar to prepare you to better navigate these books and pass the exam.

Add All Required Books to Cart ($972.85)

Additional Services

The first step in the licensing process is to submit a completed application to the state licensing board to obtain approval to test.

All Mechanical Contractors are required to take the Mechanical Business and Law Exam in addition to the contractor’s exam in order to obtain this license.

Applicants must be at least 19 years of age and verify at least 4 years of experience.

All types of Mechanical Contractors are required to carry a $5,000 Surety Bond and at least $50,000 in liability insurance.

This exam tests a candidate’s knowledge of the installation, maintenance, repair, fabrication, alteration or extension of air conditioning, refrigeration, heating, and ventilation, including ductwork, within a complete system unlimited in horsepower or tons, and related appurtenances, apparatus, piping vessels, ducts and insulation.

Fees must accompany the application. The licensing fee is $330. ($300 for license & $30 for processing)

Applications are reviewed once per week. Wait time for approval should be minimal.

Plumbing, Mechanical & Electrical construction are regulated at the state level.
For license requirements and an application, contact:

State of Oklahoma
Construction Industries Board
2401 N.W. 23rd Street, Suite 5
Oklahoma City, OK 73107
405.271.5217

Important Contacts

Plumbing, Mechanical & Electrical construction are regulated at the state level.
For license requirements and an application, contact:

State of Oklahoma
Construction Industries Board
2401 N.W. 23rd Street, Suite 5
Oklahoma City, OK 73107
405.521.6550
405.521.6526 fax
877.484.4424
Oklahoma trade examinations are administered by:

PSI Licensure: Certification
3210 East Tropicana
Las Vegas, NV 89121
(800) 733-9267 phone
702.932.2666 fax


The Board may enter into a reciprocity agreement with another State if the requirements for licensure in the other State are deemed by the Board to be substantially the same or equivalent to the requirements for obtaining an original license by examination in this state

Oklahoma requires that 6 hours of approved CE must be completed every 36 months (3 years). A licensee is exempt from these requirements for 3 years from the date he or she initially passes the current licensing exam.   As of July 1, 2014, no contractor or journeyman license shall be renewed unless 6 hours of Continuing Education, within the last 36 months (3 years), have been completed.  Thereafter, 6 hours of CE must be completed every 3 years (36 months).

The exam is given by PSI. It is an open-book, timed test with 90 questions and a 4-hour time limit. A score of at least 70% is required to pass the exam. The test fee is $100.00

EXAM CONTENT: Electrical Knowledge and and Controls Natural Gas Air Distribution Systems Refrigeration & Air Conditioning Systems Heating Systems Safety

American Contractors currently offers a 1-day class for the Oklahoma HVACR Unlimited Contractor. We also carry all the reference materials needed to study for the exam. Please call 800-992-1910, if you have additional questions.