Nevada HVAC Contractor (C-21) License Requirements (2026)

The Nevada State Contractors Board (NSCB) licenses HVAC contractors under the Class C Specialty classification. The C-21 Refrigeration and Air Conditioning designation authorizes installation, alteration, repair, and maintenance of forced-air heating, ventilation, air conditioning, refrigeration, and associated refrigerant piping and ductwork for any structure and is required for any project valued at $1,000 or more under NRS 624. Nevada licenses HVAC trades at the business (contractor) level through NSCB rather than issuing statewide individual technician credentials; EPA Section 608 certification for refrigerant handling is still required federally for anyone servicing refrigerant circuits. The qualifying individual on the C-21 application must document four years of HVAC or refrigeration experience at journeyman or above within the last ten years.

Regulatory Body Profile

Authority over this credential rests with Nevada State Contractors Board (NSCB), which issues and polices it under Nevada Revised Statutes (NRS) Chapter 624; Nevada Administrative Code (NAC) Chapter 624. NSCB licenses all contractors performing work in Nevada under NRS 624, sets monetary limits tied to financial capacity, administers trade and business-and-law examinations through PSI, investigates complaints, and conducts disciplinary proceedings statewide.

Official portal: https://www.nvcontractorsboard.com/
Address: 2310 Corporate Circle, Suite 200, Henderson, NV 89074 (Southern office); 5390 Kietzke Lane, Suite 102, Reno, NV 89511 (Northern office)
Phone: (702) 486-1100 (Southern); (775) 688-1141 (Northern)

The Eligibility Audit

Eligibility begins with two baseline checks: the applicant must be 18 or older and must provide a valid Social Security Number. No Nevada residency requirement.

Good moral character

NSCB conducts a fitness review on every qualifying individual and every officer, member, partner, or 25%+ shareholder.

Background investigation

Mandatory FBI and Nevada DPS fingerprint-based criminal history check for the qualifying individual and every officer or member.

Disqualifying conditions

Construction-related fraud convictions within the last ten years
Prior NSCB license revocation
Unsatisfied civil judgments arising out of HVAC or refrigeration work

Experience and Education Standards

A minimum of four years of practical HVAC or refrigeration experience at the journeyman, foreman, supervising employee, or contractor level within the last ten years must be documented and verified. Unless the board publishes a different lookback period, applicants should keep payroll, tax, project, or supervisor records that support the claimed experience.

Accepted proof of experience or eligibility

NSCB Certificate of Experience signed by each prior employing HVAC contractor
W-2 statements, certified payroll, or 1099 records covering the qualifying period
EPA Section 608 Universal (or Type I/II/III) certification card
Approved HVAC/R apprenticeship completion certificate

Education substitution

Up to three of the four years may be substituted with accredited HVAC/R or mechanical engineering technology coursework or an approved HVAC apprenticeship on a sliding scale set by NAC 624.190; at least one year of hands-on field experience is always required.

The Exam Syllabus

PSI Services LLC under contract to NSCB administers the required examination. Each part below must be passed before the license will issue:

PSI Nevada C-21 Refrigeration and Air Conditioning Trade Examination — mechanical code, refrigerant piping, load calcs, duct design — 110 questions, 270 minutes, passing score 70%
PSI Nevada Business and Law Examination — 75 questions, 180 minutes, passing score 70%

Examination fee: $95 per PSI exam part paid on the day of testing.

Retake policy: Failed parts may be retaken individually after a 30-day waiting period by paying a new $95 fee. The application remains valid for one year.

Bonding, Insurance & Financial Security

Before the license is issued, the applicant must file a $15,000 contractor license surety bond in the form prescribed by the NSCB.

General liability

NSCB requires $300,000 bodily injury per occurrence, $300,000 property damage per occurrence, and $50,000 aggregate minimum before license issuance.

Workers' compensation

Workers' compensation coverage is mandatory under NRS 616B for any HVAC contractor with one or more employees. Sole proprietors with no employees may file an affidavit of exemption.

Additional financial requirements

CPA-reviewed or audited financial statement required. Minimum monetary limit is $15,000 (with a $1,000 bond); unlimited monetary limit requires a $500,000 surety bond. Statements must be no more than 12 months old at submission.

Schedule of Fees

Fee	Amount
Application (non-refundable)	$300
Examination	$190
Initial license	$600
Renewal (every 2 years)	$600

Renewal and Continuing Obligations

The Nevada C-21 Refrigeration and Air Conditioning Contractor runs on a 2 years renewal cycle. The current renewal fee is $600. Renewal requires confirmation that the qualifying individual is still actively associated with the licensee.

Continuing education: Nevada does not require continuing education for C-21 renewal, but bond, insurance, and financial standing must remain current and EPA 608 certification must be maintained.

Downloadable Asset

2026 Nevada HVAC License Roadmap (PDF) — a printable step-by-step checklist for the application process.

Download the PDF roadmap →

Out-of-State Reciprocity

For this classification, Nevada does not recognize the NASCLA Accredited Examination.

Reciprocal State	Accepted Exam	Conditions
Arizona	Trade exam waived	Bilateral NSCB–Arizona ROC reciprocity for matching C-39 Air Conditioning and Refrigeration or similar classifications held in good standing for at least four years.
California	Trade exam waived	Bilateral NSCB–CSLB reciprocity for C-20 Warm-Air Heating, Ventilating and Air Conditioning held in good standing for at least four years.
Utah	Trade exam waived	Bilateral NSCB–Utah DOPL reciprocity for matching HVAC classifications.

Reciprocity waives only the trade exam. The Nevada business and law exam, fingerprinting, financial statement, and bond are required from every applicant. EPA Section 608 certification is federally required and not waived by state reciprocity.

Weighing more than one jurisdiction? The national hub compares HVAC license requirements in every state — exam, bond, fee, and experience thresholds side by side.

The Application Roadmap

Document four years of HVAC experience. Four years at journeyman level or above within the last ten years, verified on the NSCB Certificate of Experience.
Earn EPA Section 608 certification. Universal (or Type I/II/III) certification is federally required before handling refrigerant circuits.
Prepare a CPA-reviewed financial statement. NSCB assigns the monetary limit based on working capital and net worth.
Submit the NSCB C-21 application. File with the $300 application fee, qualifying individual designation, financial statement, fingerprint cards, and exam requests.
Pass FBI and Nevada DPS background checks. Submit fingerprints for the qualifying individual and every responsible managing officer or member.
Pass both PSI exams at 70%. C-21 Refrigeration and Air Conditioning trade exam plus the Nevada Business and Law exam. Both must be passed within one year of application approval.
Post the surety bond and proof of insurance. Bond scales with the monetary limit. File liability and workers compensation certificates before issuance.

Where Applications Stall

The following pitfalls summarize the issues most likely to delay, return, or derail a Nevada HVAC application based on the published board instructions and source materials cited on this page.

Confusing C-21 with C-1

C-21 covers forced-air HVAC and refrigeration; C-1 covers plumbing and hydronic/gas-piping heating. Doing hydronic work on a C-21-only license is unlicensed contracting.

Skipping EPA 608 certification

Federal law bars handling refrigerants without EPA 608. NSCB will not block licensure over it, but any refrigerant work without it is a federal violation.

Submitting a self-prepared financial statement

NSCB rejects self-prepared statements. A CPA review or audit is mandatory and directly sets the monetary limit.

Bidding above the monetary limit

Exceeding the assigned dollar cap on any single project triggers discipline under NRS 624.320 and can void the contract.

Letting the bond or insurance lapse

Insurers notify NSCB directly on any lapse — the license is suspended automatically.

Pre-Application Checklist

Have each of the following squared away before the packet goes to NSCB:

☐ NSCB C-21 application with $300 fee and qualifying individual designation
☐ Certificate of Experience covering four years of HVAC work at journeyman or above
☐ EPA Section 608 certification card (Universal or Type I/II/III)
☐ CPA-reviewed financial statement no more than 12 months old
☐ FBI and Nevada DPS fingerprint cards for every officer, member, and qualifier
☐ PSI Nevada C-21 trade exam and business and law exam pass certificates at 70%+
☐ Surety bond, $300k/$300k/$50k liability insurance, and workers compensation certificate

Recommended Study Materials

The following references are cited by the regulator, used in the application process, or commonly used to prepare for the trade scope. Listed for reader convenience; CLR receives no compensation for these recommendations.

Uniform Mechanical Code (IAPMO), Nevada-adopted edition with state amendments — International Association of Plumbing and Mechanical Officials. Primary technical reference. Open-book at the PSI test center.
NSCB Contractor Reference Manual (current edition) — Nevada State Contractors Board. Official statute, regulation, and policy reference.
ACCA Manual J, D, and S — Air Conditioning Contractors of America. Load calculation, duct design, and equipment selection references tested on the C-21 exam.

Other Nevada Trade Licenses

CLR maintains guides for additional Nevada trades; the published ones are listed here:

Common Questions

Does Nevada issue a statewide HVAC technician license?

No. Nevada licenses HVAC contractors at the business level through NSCB under the C-21 classification. Individual technicians still need federal EPA Section 608 certification to handle refrigerants, but there is no statewide journeyman HVAC credential.

What does the C-21 classification authorize?

C-21 authorizes installation, alteration, repair, and maintenance of forced-air heating, ventilation, air conditioning, refrigeration, and associated refrigerant piping and ductwork in any structure, subject to the assigned monetary limit.

How is my C-21 monetary limit determined?

NSCB assigns a monetary limit based on working capital and net worth from your CPA-reviewed financial statement. The minimum is $15,000; the maximum is unlimited and requires a $500,000 surety bond.

Do I need EPA 608 certification for a Nevada C-21 license?

Yes. EPA Section 608 is a federal requirement enforced on anyone who services refrigerant circuits. NSCB does not issue it, but you cannot lawfully operate without it.

Does Nevada reciprocate HVAC contractor licenses?

Yes. NSCB has bilateral agreements with Arizona (C-39), California (C-20), and Utah for matching HVAC classifications. Reciprocity waives the trade exam only — the Nevada business and law exam is still required.

Primary Sources

Regulatory requirements on this page are drawn from the official board, statute, and exam-provider materials listed below.

Verified 2026-04-16 · Next scheduled review 2026-07-15