Construction Trade Exam Research Area

Environmental Air - Class A
(Uniform Code Based)

Apply for the License

Texas Department of Licensing & Regulation
Air Conditioning and Refrigeration Contractors

920 Colorado St.
Austin, Texas 78701
Telephone: (512) 463-6599
Toll-Free (in Texas): 800-803-9202
TX Dept of Licensing & Regulation

Exam Administrator

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

Exam Type


Exam Content

Subject Areas # of
Air Distribution 18
Basic Refrigeration Components 6
Combustion Air 6
Controls 6
Equipment Requirements 12
HVACR Systems and Design 12
Piping 6
Refrigeration Principles 6
Safety 6
Service 12
Testing 12
Laws and Rules 6
Ventilation 6
Venting 6

Total number of test questions: 120
Time Allowed (Minutes) 230
Part of this exam requires knowledge of business management principles.  We offer those study materials on a separate Texas Mechanical Business and Law web page.

Go to Business and Law Offering

Books Permitted in the Exam

1. Texas Occupation Code Chapter 1302 - Air Conditioning and Refrigeration Contractors License Law Web Page Link
2. Texas Administrative Code Chapter 75 - Air Conditioning and Refrigeration Contractors License Rules Web Page Link
3. Code of Federal Regulations, Title 29, Part 1904, Recording and Reporting Occupational Injuries and Illnesses, GPO Web Page Link
4. Modern Refrigeration and Air Conditioning, 20th Edition, 2017, Althous, Turnquist, Bowditch, Bracciano. Buy at Amazon
5. ADI Duct Size Calculator, Air Distribution Institute Buy from Publisher
6. Manual D -- Residential Duct Design, 2014, ACCA Buy at Amazon
7. Manual J - Residential Load Calculations, 8th/2.50, 2016, ACCA Buy at Amazon
8. Uniform Mechanical Code, 2012, IAPMO Buy at Amazon
NOTE:  The exam is not specific to the International vs. the Uniform plumbing code.  You only need to study one code.  If you are using the International code for your references, use this link for study materials.
Study materials are currently NOT available for this exam

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