Prepare with confidence and pass your Nevada Refrigeration and Air Conditioning Contractor (C-21) Exam with this comprehensive Exam Book Package—featuring the official references allowed in the testing center along with essential supplemental study materials to help you fully understand HVAC systems, refrigeration principles, and code requirements.
This package is designed for both exam success and real-world application, giving you the knowledge you need to not only pass—but perform as a skilled refrigeration and air conditioning contractor.
Uniform Mechanical Code (UMC), 2018
The primary reference used during your Nevada C-21 exam. It covers:
NFPA 54 – National Fuel Gas Code, 2012
Provides standards for fuel gas systems, including:
💡 All books are provided in standard format (not pre-tabbed), so you can become familiar with navigating them just as you will on exam day.
(Not Allowed in Exam – Critical for Preparation)
These materials are designed to strengthen your HVAC knowledge, system design skills, and jobsite safety awareness:
At 1 Exam Prep, we focus on helping you pass the test and build a successful contracting career. Our packages are designed around:
This is an open-book exam with multiple references—success depends on knowing where to look. Spend time familiarizing yourself with the Uniform Mechanical Code and key HVAC concepts to improve speed and accuracy on test day.