Nevada Refrigeration and Air Conditioning (C21) Contractor License
The Refrigeration and Air Conditioning (C21) Contractor License allows you to do the following work:
Refrigeration (C21A):
- Construction, erection and installation of:
- Devices
- Machinery
- Units for the control of air temperatures below 50°F
- Refrigerated rooms and insulated spaces
- Insulation
- Ducts
- Blowers
- Registers
- Controls over humidity and thermostatic controls
- Lines for supplying natural gas from the unit to the point of connection in the existing line for natural gas at the meter
- Electrical service from the unit’s device to protect against excessive current to the main electrical panel (not the installation of other gas or electric services for the devices, machinery or units)
- Construction, erection and installation of:
Air-Conditioning (C21B):
- Service and maintenance of:
- Devices
- Machinery
- Humidity and thermostatic controls in connection with any equipment
- Units and related ductwork using evaporation, refrigeration, boilers or combustion for the control of air temperatures in structures
- Service and maintenance of:
Sheet Metal (C21C):
- Cornices
- Flashings
- Gutters
- Leaders
- Downspouts for rainwater
- Pans
- Food service equipment
- Ducts
- Louvres
- Flues and metal roof systems (no fabrication or installation of equipment which uses refrigeration as an integral part of the system)
- Patented chimneys
Maintenance (C21D):
- Replacement and Repair of any parts existing unitos or systems of AC and Refrigeration
- Compressors
- Motors
- Relays
- Coils
- Heat exchangers
- Any other appurtenances and equipment (but not the replacement of complete condenser assemblies on remote systems, air handlers or any work that may alter the design of an existing system)
- Replacement and Repair of any parts existing unitos or systems of AC and Refrigeration
Solar Air-Conditioning (C21E):
- Piping
- Collectors
- Storage and other equipment used in the conversion of solar energy to energy used for the control of air temperatures
Chilled and Hot Water Systems (C21F):
- Boilers
- Chillers
- Coils
- Pumps
- Cooling towers
- Piping
- Storage tanks
- Valves and other equipment used in the production and transfer of water for the control of temperatures
Industrial Piping (C21G):
- Fabrication and removal of piping and equipment used for the transmission of:
- Water
- Steam
- Chemicals
- Gas
- Food and other substances for industrial uses
- Fabrication and removal of piping and equipment used for the transmission of:
How to Get a Nevada Refrigeration and Air Conditioning (C21) Contractor License
- Get a Nevada Business ID before completing the Contractor Application. Obtain the business ID by contacting the Nevada Secretary of State and filling out the application for a Nevada State Business License
- Collect and send the following required documentation by the Nevada State Contractors Board (NSCB) to submit the contractor application:
- Copies of driver's licenses or government-issued IDs
- Experience Documentation
- History of past and current employment
- Background Disclosure Statement and Fingerprint Background Waiver forms
- Financial Statement
- Provide a check, cashier's check, or money order payable to NSCB
- Child Support Information Statement – Sole Proprietors ONLY
- Submit a Signature on the application where requested
- Present proof of past work history by providing one of the types of documentation mentioned below:
- Four Certification of Work Experience Forms (Certificates)
- The minimum time of experience must be of 4 full years (1460 days) but each Certification of Work Experience Form doesn't have to demonstrate four years of experience
- Proof of transferrable military training and experience
- An active Master's Certification issued by an officially recognized agent or governmental agency similar to the Refrigeration and Air Conditioning (C21) classification
- Proof of eligibility for Licensure by Endorsement. Applicants are recommended to review the State Equivalency Chart to determine their eligibility. To be considered for licensure by endorsement, you must submit a Request for Verification of License with your application, completed by your endorsing state
- Four Certification of Work Experience Forms (Certificates)
- Fill out and send the completed Contractor License Application Form with all documents
- Expect an Examination Eligibility form AFTER the application has been submitted and the work experience has been verified
- Take and Pass the following tests administered by PSI©:
- Refrigeration and Air Conditioning (C21) trade exam
- Management Survey Business and Law Exam (CMS)
- When NSCB has approved the license, the applicant must submit the License Bond indicated on the approval letter and proof of Workers' Compensation Insurance
- The NSCB will issue the license and send it by mail to the address of the application
Nevada Refrigeration and Air Conditioning (C21) Contractor License Exam Prep Course
Nevada Refrigeration and Air Conditioning (C21) Contractor License Exam
Below is all the information related to the Management Survey exam, including the official reference list.
Nevada Refrigeration and Air Conditioning (C21) Contractor Trade Exam
- Testing Method: Computer Based
- Testing Company: PSI©
- Number of Questions: 85
- Types of Questions: Multiple Choice
- Time Allowed: 3 Hours
- Minimum Passing Score: 60 Questions
- Subjects Involved (No. of Questions):
- Piping (6)
- Insulation (1)
- Hangers and Supports (3)
- Sound, Vibration, and Seismic Control (1)
- Heating and Cooling Principles (3)
- Refrigerants and Refrigeration (7)
- Load Calculations (6)
- Testing, Adjusting, and Balancing (3)
- Controls (5)
- Machine Room (1)
- A/C and Heat Pump Equipment (4)
- Furnaces and Heaters (4)
- Hydronics (2)
- Chimneys, Flues, and Vents (5)
- Combustion Air (2)
- Fuel Systems (10)
- Ducts (6)
- Evaporative Cooling (2)
- Chillers (3)
- Solar (4)
- Ventilation and Exhausts (3)
- Safety (4)
- PSI© Refrigeration and Air Conditioning (C21) Official Content Outline
Nevada Refrigeration and Air Conditioning (C21) Contractor Management Survey Exam
- Testing Method: Computer Based
- Testing Company: PSI©
- Types of Questions: Multiple Choice
- Number of Questions: 60
- Time Allowed: 120 Minutes
- Minimum Passing Score: 45 (75% correct)
- Subjects Involved (No. of Questions):
- Licensing (10)
- Estimating and Bidding (7)
- Lien Law (3)
- Financial Management (12)
- Tax Laws (5)
- Labor Laws (5)
- Project Management (3)
- Contracts (6)
- Risk Management (4)
- Environmental and Safety (5)
- PSI© Management Survey Official Content Outline
Nevada Refrigeration and Air Conditioning (C21) Contractor Book Set
This set of books includes all required references for the Refrigeration and Air Conditioning (C21) and Management Survey exams. Orders placed before 2 PM are shipped the same day via UPS and a tracking number is emailed before 3 PM.
NEVADA REFRIGERATION AND AIR CONDITIONING (C21) - BOOK SET WITHOUT TABS INCLUDES ALL BOOKS FOR TRADE AND BUSINESS EXAMS
Sales price: $958.73-
NEVADA REFRIGERATION AND AIR CONDITIONING (C21) - BOOK SET WITH TABS INCLUDES ALL BOOKS FOR TRADE AND BUSINESS EXAMS
Sales price: $1,048.73
Nevada Refrigeration and Air Conditioning (C21) Contractor Exam Books
Books Allowed in Testing
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Uniform Mechanical Code provides complete req...Uniform Mechanical Code
r1409 1$193.92$193.92 -
NFPA 54, National Fuel Gas Code provides indu...NFPA 54 National Fuel Gas Code or National Fu
r891 1$91.25$91.25
Books Not Allowed in Testing
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OSHA (CFR 29 Part 1926) is the leading safety...CFR (OSHA) Title 29 Part 1926
r84 1$30.00$30.00 -
This is a used book, used book pricing has be...Modern Refrigeration and Air Conditioning
r192 1$64.65$64.65 -
The HVAC Duct Construction Standards is a SMA...HVAC Duct Construction Standards – Metal an
r163 1$239.86$239.86 -
This edition of Manual N, from the Air Condit...Manual N Commercial Load Calculation
r181 1$181.26$181.26 -
Solar Thermal Manual (fka Solar Water and Poo...Solar Thermal Manual (Solar Water and Pool He
r279 1$36.25$36.25 -
This book covers important information on Air...Evaporative Air Conditioning Handbook
r1399 1$24.43$24.43
Nevada Refrigeration and Air Conditioning (C21) Management Survey Exam Book
Book Allowed in Testing
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Nevada Construction Business and Law Manual i...Nevada Construction Business and Law Manual
r1418 1$97.11$97.11