Construction Trade Exam Research Area

Environmental Air - Class B
(International Code Based)

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Texas Department of Licensing & Regulation
Air Conditioning and Refrigeration Contractors

P.O. Box 12157
Austin, Texas 78711
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 15
Basic Refrigeration Components 5
Combustion Air 5
Controls 5
Equipment Requirements 10
HVACR Systems and Design 10
Piping 5
Refrigeration Principles 5
Safety 5
Service 10
Testing 10
Laws and Rules 5
Ventilation 5
Venting 5

Total Number of Test Questions: 100
Time Allowed (Minutes) 170
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

Reference Books Permitted in the Exam

1. International Mechanical Code, 2012, ICC. Doc Link
2. International Fuel Gas Code, 2012, ICC. Doc Link
3. Modern Refrigeration and Air Conditioning, 19th or 20th Edition, 2017, Althous, Turnquist, Bowditch, Bracciano. Buy from Publisher
4. ACCA Ductulator (Duct Slide Rule), ACCA. Buy from PSI

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Texas • Environmental Air - Class B
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