Construction Trade Exam Research Area

Environmental Air - Class B
(International Code Based)

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State of Texas
Department of Licensing and Regulation (TDLR) ™

920 Colorado St
Austin, TX  78701
Phone: (512) 463-6599
Mechanical Licensing Link

Exam Administrator

PSI Licensure: Certification ™
3210 E. Tropicana
Las Vegas, NV  89121
Phone:  (800) 733-9267
Candidate Bulletin Link

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

Books Permitted in the Exam

1. International Mechanical Code, 2015, ICC Buy at Amazon
2. International Fuel Gas Code, 2015, ICC Buy at Amazon
3. Modern Refrigeration and Air Conditioning, 20th Edition, 2017, Althous, Turnquist, Bowditch, Bracciano. Buy at Amazon
4. ADI Duct Size Calculator, Air Distribution Institute Buy from Publisher
5. Manual D - Residential Duct Design, 2014, ACCA Buy at Amazon
6. Manual J - Residential Load Calculations, 8th/2.50, 2016, ACCA Buy at Amazon
7. Manual S – Residential Equipment Selection, 2014, ACCA Buy at Amazon
8. Texas Occupation Code Chapter 1302 - Air Conditioning and Refrigeration Contractors License Law Web Page Link
9. Texas Administrative Code Chapter 75 - Air Conditioning and Refrigeration Contractors License Rules Web Page Link
10. Code of Federal Regulations, Title 29, Part 1904, Recording and Reporting Occupational Injuries and Illnesses, GPO Web Page Link
Study materials are currently NOT available for this exam

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