Licensing Exams by Trade Name - Home Link


(C-21B) Air Conditioning Contractor

Apply for the License
Nevada State Contractor‘s Board
2310 Corporate Circle, Suite 200
Henderson, NV  89074
Phone: (702) 486-1100
Exam Provider
PSI Services LLC
3210 E. Tropicana
Las Vegas, NV  89121
Phone:  (855) 205-5827
Exam Type
Exam Content
Subject Areas# of
Hangers & Supports3
Sound, Vibration & Seismic Control1
Heating & Cooling Principles3
Refrigerants & Refrigeration4
Load Calculations6
Testing, Adjusting & Balancing1
A/C & Heat Pump Equipment4
Furnaces & Heaters 4
Chimneys, Flues & Vents3
Combustion Air2
Fuel Systems8
Evaporative Cooling3
Total number of test questions:
Time allowed (hours):

This exam may also include questions on the following subjects:

  • Reading and interpreting construction codes and regulations
  • Nevada Health Department regulations
  • Appropriate building codes
  • Trade materials, tools, equipment and methods
  • Nevada Occupational Safety and Health Rules

In addition to the trade-specific examination, you are required to pass the Contractor Management Survey Exam offered by PSI.

Books Allowed in the Exam
Uniform Mechanical Code, 2018, IAPMO
Buy at Amazon
NFPA 54: National Fuel Gas Code, 2012, NFPA
Buy at Amazon
Books NOT Allowed in the Exam
Modern Refrigeration and Air Conditioning, 19th or 20th Edition, Althous, Turnquist, Bowditch, Bracciano
Buy at Amazon
Code of Federal Regulations, 29 CFR Part 1926 (OSHA), GPO [or] (OSHA) Selections by PSI, 2013
Buy from PSI
HVAC Duct Construction Standards - Metal and Flexible, 3rd Edition, SMACNA
Buy at Amazon
Manual N - Commercial Load Calculation, 5th Edition, 2008, ACCA
Buy at Amazon
Evaporative Air Conditioning Handbook, 3rd Edition, 1997, John R. Watt, Will K. Brown
Buy at Amazon
Available Study Materials
PSI OSHA Selections
Study Guide

Sample questions are based on the PSI publication titled “29 CFR PART 1926 Selections, as of June 2013” (highlighted in green above).

This file contains approx. 800 sample questions.

REMINDER:  PSI uses this book for many exams they offer.  Not all sections of this code will apply to your exam.

We also include a table showing the relationship between our questions and OSHA code sections.  Corrections to the original PSI publication are noted.

Delivered via instant download link
Return to Top
Copyright Notice