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C-21B Air Conditioning License (Nevada)
Nevada has 491 active C-21B Air Conditioning holders in the state file as of 2026-10-291, the 11th-largest of 28 classes with at least 200 holders. 10 of them expire by 2026-12-28.
- Active holders
- 491
- 2.6% of active Nevada licenses
- Expiring by 2026-12-28
- 10
- 2.0% of holders
What does the Nevada Air Conditioning license require?
Classification C-21 Refrigeration and air-conditioning, with subclassifications C-21a refrigeration, C-21b air-conditioning, C-21c sheet metal, C-21d maintenance, C-21e solar air-conditioning, C-21f chilled and hot water systems, C-21g industrial piping (NAC 624.380). C-1f (heating, cooling and circulating air) also covers some HVAC work. No separate state HVAC technician license in NRS/NAC 624.2
Exam
Qualified individual must pass the Business and Law (CMS) exam plus the trade exam for the classification, given by PSI.1
Bond
Every license needs a bond or cash deposit, amount set by the Board between $1,000 and $500,000 based on license type, monetary limit and the applicant's finances.3
How do you check a C-21B license?
Search by license number or business name on the Nevada license lookup, which reads the same state file.
Other Nevada license classes
Sources
- NV State Contractors Board active contractor listing (app.nvcontractorsboard.com) (nvcontractorsboard.com, 2026-10-29)
- Nevada State Contractors Board: classes (leg.state.nv.us)
- Nevada State Contractors Board: bond (leg.state.nv.us)