Open binder, pen and closed laptop on a wooden desk, Nevada HVAC License: C-21 Contractor Steps and Costs

Nevada HVAC License and How to Start an HVAC Business

Last verified: November 5, 2026

In Nevada the State Contractors Board (NSCB) licenses the HVAC company, not the individual technician. The license is the C-21 classification, refrigeration and air-conditioning, and it is held by a business that names a qualifying individual with four documented years of trade experience (NAC 624.380; NSCB license requirements). This guide is for a working technician or foreman who plans to put their own name on a van and bid jobs.

Our position: check your experience paperwork before you form an LLC. The four years, and who is willing to sign for them, decide how soon you can be licensed. The entity filing is a quick task by comparison. If you do not have the years yet, the honest route is to keep working under a licensed C-21 company.

What the C-21 License Covers

NAC 624.380 splits C-21 work into seven subclassifications, and a C-21 holder may perform the work of all of them. The wording matters because it sets what you can legally bid.

SubclassificationWork it authorizes (NAC 624.380)
C-21a RefrigerationDevices and units that control air temperatures below 50 degrees F in refrigerators, refrigerated rooms and insulated spaces, with related ducts, controls and the gas line from the unit to the existing line
C-21b Air-conditioningInstallation, repair, service and maintenance of equipment and ductwork that use evaporation, refrigeration, boilers or combustion to control air temperatures in structures, with humidity and thermostat controls
C-21c Sheet metalFabrication and installation of sheet metal, including ducts, flashings, gutters and metal roof systems, but not refrigeration equipment
C-21d MaintenanceRepair and replacement of parts in existing air-conditioning and refrigeration systems (compressors, motors, relays, coils, heat exchangers), but not replacing complete condenser assemblies on remote systems, air handlers, or work that alters a system's design
C-21e Solar air-conditioningCollectors, piping, storage and other equipment for solar air-conditioning
C-21f Chilled and hot waterBoilers, chillers, coils, cooling towers, pumps, tanks and valves used to produce and move water for temperature control
C-21g Industrial pipingFabrication, installation, repair and removal of piping for water, steam, gas, chemicals and food in industrial uses

Two decision points follow from that table. First, C-21d is a narrow maintenance scope: if you plan to replace whole air handlers or condenser assemblies, it is not the right fit. Second, boiler work appears in both the C-21 wording (C-21b and C-21f) and the plumbing and heating classification (C-1a, NAC 624.190). If your jobs sit on that line, ask the Board before you apply with the NSCB license determination request form; the Board lists all classifications on its license classifications page.

On demand: we have no sourced Nevada HVAC market figure for this page. The case for the trade rests on climate, since a failed air conditioner in a desert county is a same-day problem. That is our reasoning, not a published statistic. Our guide to the general Nevada contractor license covers the rules every classification shares.

Why You Cannot Start With Small Jobs

Nevada exempts repair or maintenance work worth less than $1,000, but the exemption does not apply when the work is of a type performed by a refrigeration, heating or air-conditioning contractor (NSCB exemptions, NRS 624.031). So a $400 compressor swap is licensed work. There is also a longer penalty: if an unlicensed person bids a job of $1,000 or more, the Board may refuse that person a license for up to 1 year (NRS 624.247). Do not bid before the license is issued.

Step 1: Document Your Experience

All contractors must be licensed before they contract, which the Board defines as bidding, offering to engage or negotiating a price. The license belongs to the business, not to the qualifier. The Board needs a trade qualifier who has at least four full years of experience within the last 15 years as a journeyman, foreman, supervising employee or contractor in the classification you request. The qualifier can be an owner, officer, member, manager or employee of your company, but must be a bona fide member or employee actively engaged in the contracting business (NRS 624.260; NSCB license requirements).

  • Standard proof: four completed Certification of Work Experience forms and a Resume of Experience for each trade qualifier. Employers other than the applying company complete the forms. If you were self-employed, your customers complete them.
  • Not accepted: forms completed by relatives, unless the relative was your employer, and forms that are incomplete or vague about the work performed. A form found false or misleading can be treated as misrepresentation and can sink the application.
  • Training credit: training at an accredited college, university or equivalent program accepted by the Board can replace up to 3 of the 4 years. Bring apprenticeship certificates or transcripts. There is no education requirement.
  • Other routes: a current masters certification from a government agency in a similar discipline, transferable military experience, or licensure by endorsement if you held an active license for the past four years in a state on the Board's equivalency chart.

Ask for the signatures now. The Board verifies experience before it releases an exam eligibility letter, so missing paperwork stalls everything after it. The forms are in the NSCB application packet.

Step 2: Choose Your Business Structure

Most one-owner HVAC companies choose an LLC for liability protection, because a failed gas connection or a flooded ceiling is a realistic claim in this trade. A corporation costs more in state fees and adds paperwork; a sole proprietorship has no entity filing but no liability separation either. Talk to an attorney and a CPA about your situation. If you want help with the filing itself, you can file yourself or use a formation service; compare LLC formation services in Nevada, and see our Nevada LLC guide for the full filing walk-through.

State filing fees as of November 5, 2026, read from the statutes:

  • LLC: $75 for the articles of organization (NRS 86.561), $150 for the initial list of managers or members (NRS 86.263) and a $200 state business license (NRS 76.100). First year total: $425. After that: $350 a year.
  • Corporation: $75 at the lowest tier (authorized shares of $75,000 or less; higher tiers cost more under NRS 78.760), a $150 initial list and a $500 state business license. First year total at the lowest tier: $725.
  • Sole proprietor: no articles to file. A natural person who files a Schedule C is generally a "business" under NRS 76.020, with a narrow exclusion for small home-based businesses, and the NSCB application asks for a Nevada Business ID, so plan on registering with the Secretary of State. If you trade under a name other than your own, you also file a fictitious firm name certificate with the county clerk (NRS 602); the Clark County Clerk charges $25, and other counties set their own fee.

The Board needs your Nevada Business ID before it will take the application, so do the entity and state business license before Step 4.

Step 3: File With the Secretary of State and Get the Business License

File through the Secretary of State's online portal, Nevada ORION portal (SilverFlume links now redirect there). Name reservation is optional: $25 for 90 days, per the Secretary of State's name reservation page (snapshot of September 26, 2026 from the Internet Archive, because the live page is not readable from our server). The state business license fee and the license renewal date, the last day of the month in which your formation anniversary falls, come from the Secretary of State's license FAQ (snapshot of October 14, 2026) and NRS 76.100.

Expedited filing exists. NRS 225.140 lets the Secretary of State charge a reasonable fee for special service, not to exceed $1,000 for service within 1 hour, $500 within 2 hours, or $125 for other special service (NRS 225.140). Those are ceilings in the statute, not the amounts charged; confirm the current schedule with the Secretary of State. Paying for speed only helps if the Business ID is what is holding you up, because the Board still has to verify your experience before you can sit the exams.

Step 4: Apply to the Contractors Board

Apply online through the NSCB contractor's license application. The packet asks for:

  • Nevada Business ID from the Secretary of State
  • A filed fictitious name certificate, if you use a name other than your registered one
  • A financial statement, required whatever monetary limit you request, with the type set by that limit. The monetary limit is the most you can contract for on one site for one client. For limits of $25,000 or less the Board accepts a CPA-prepared statement, its own form, or an accounting-software balance sheet with an affidavit; from $1,000,000 up it must be CPA-reviewed or audited, plus a bank verification form. A CPA can tell you which tier your plan lands in.
  • A background disclosure and fingerprint authorization from every person listed on the application, including each qualifier
  • The experience documents from Step 1
  • A bank verification form completed by your bank
  • The nonrefundable application fee of $300 (NSCB new license application, 2026)

The application is not processed until it is complete and paid. The Board does not publish a processing time on the pages we read, so we give none. Ask the Board for the current timeline when you apply.

Step 5: Pass the Exams

The qualifying individual must pass the Business and Law (CMS) exam and a trade exam for the classification. Once your experience is verified the Board issues an exam eligibility form with a Candidate ID; you cannot schedule before it arrives (NSCB license examinations).

  • Format: the CMS exam is open book, using the Construction Business and Law Manual for Nevada. Trade exams are closed book except for certain code references named in the exam outline.
  • Where: PSI runs the testing, with sites in Las Vegas, Reno and Elko, and PSI sites in other states for the Nevada exams. PSI sets the exam fees; read its candidate bulletin before you book.
  • Attempts: three per exam, with a two-week wait after a failed attempt. A third failure voids the application under NAC 624.600(3), and you can reapply with a new application and fee after 30 days from your last exam.
  • Preparation: Nevada offers no practice exams and neither endorses nor recommends any licensing school. Use the reference lists in the exam content outline.

Step 6: Post the Bond and Prove Insurance

The Board sets your bond when it approves the license, from $1,000 to $500,000, based on the classification, monetary limit, financial responsibility, experience and character of the applicant. After approval you are told the amount and must post it before the license is issued (NSCB bonds). That is why we do not suggest buying a bond in advance.

  • Surety bond: from a surety authorized in Nevada and rated A or better. It must be continuous; a surety cancels with 60 days' notice to the Board, and a lapse is cause to suspend the license. Premiums are market prices; the Board publishes none, so collect quotes once the amount is known.
  • Cash deposit: a cashier's check to the Board for the full amount, with a $200 administrative fee every two years. After the license ends the Board holds the deposit for two more years.
  • Industrial insurance: the Board requires proof of workers' compensation coverage for your employees, or an affidavit that you have no employees and do not intend to subcontract or bid for a principal contractor (NRS 624.256). See our Nevada workers' compensation guide.
  • General liability: the Board's license requirements page lists a bond, exams, experience and a financial statement, and does not list general liability insurance. Customers or commercial clients may still require it in a contract, so ask an insurance agent what coverage fits gas and refrigerant work.

Step 7: Local Business License and Permits

The contractor license is statewide, but you still need a local business license from the city or county where your shop or office is located. Start with the jurisdiction's own page: Clark County business license guide (unincorporated Clark County), City of Las Vegas business license, City of Reno business license guide and Washoe County business license. Fees and processing times differ by jurisdiction, so we list none here. If you run the business from home, read our home-based business guide first; it covers zoning and home-occupation rules.

Installation and replacement jobs generally go through the local building department. Confirm who pulls the permit, you or the homeowner, with the building department where you work before your first install.

Step 8: Federal Refrigerant Rules, Taxes and Payroll

  • EPA Section 608: the federal program (40 CFR Part 82, Subpart F) bars intentionally venting refrigerants while servicing, repairing or disposing of air conditioning or refrigeration equipment. EPA keeps the list of approved Section 608 technician certification programs. It is separate from the NSCB exams. Plan to certify everyone who will handle refrigerant, including you, before the first service call.
  • EIN: the IRS issues it free; use IRS: Employer Identification Number and avoid paid look-alike sites.
  • Employees: register with Nevada DETR for unemployment insurance (DETR). Employers file the Modified Business Tax return every quarter even when nothing is due; the general rate is 1.17% of quarterly wages above $50,000 (Department of Taxation: Modified Business Tax).
  • Sales tax permit: $15 per location where you sell taxable goods (Department of Taxation: start and run a business). Ask the Department how it treats parts you sell separately from installation.
  • Commerce Tax: only businesses with Nevada gross revenue over $4,000,000 a year file; check it again as you grow.

What Commonly Goes Wrong

  • Bidding before the license is issued. The Board counts bidding and price negotiation as contracting. The small-job exemption does not cover HVAC work, and an unlicensed bid of $1,000 or more can bar you for up to a year (NRS 624.247).
  • Weak experience paperwork. Forms from relatives, or forms that do not say what work was performed, are not accepted.
  • Applying for too narrow a scope. A C-21d maintenance license does not cover replacing whole air handlers or condenser assemblies, so scope the jobs you want before you pick the classification.
  • Recommending work that is not needed. NRS 624.30165 makes it an unfair business practice, and cause for discipline, to state that service, replacement parts, equipment or repairs are needed when they are not (NRS 624.30165). Write the findings that justify each recommendation on the invoice.
  • Missing the renewal. A license lasts 2 years, and one not renewed on or before the renewal date is automatically suspended (NRS 624.283). Renewal runs through the NSCB online portal.
  • Losing your qualifier. The license belongs to the business, but if the person who qualifies it leaves, NRS 624.285 requires notice to the Board and a replacement; decide who your backup qualifier is before you need one.

Costs

ItemCostNotes
LLC articles of organization$75NRS 86.561
Initial list (LLC)$150NRS 86.263; annual list also $150
State business license (LLC or sole proprietor)$200NRS 76.100; renews yearly (corporations pay $500)
Name reservation (optional)$2590 days; Secretary of State, snapshot of September 26, 2026
NSCB application$300Nonrefundable; 2026 NSCB application PDF
Surety bondSet by the Board, $1,000 to $500,000 amountPremium is a market price; cash deposit adds $200 every two years
PSI exam feesSet by PSISee the PSI candidate bulletin
NSCB license issue and renewal feeConfirm with the BoardThe Board's pages we read show no amount; NAC 624.130 carries a fee list that may be out of date
Local business licenseSet by city or countySee Step 7

The fees published above add up to $725 for an LLC ($75 + $150 + $200 + $300) before bond, exam, issue and local fees, insurance, tools and a vehicle. We list no equipment or insurance estimates because we have no official source for them.

Sources

Disclaimer

This article is informational and does not constitute legal or tax advice. HVAC licensing requirements, bonding amounts, and local permitting vary by location and change periodically. Before starting your business, consult the official Nevada State Contractors Board website, the Nevada Secretary of State, your county clerk, and a qualified attorney and CPA to confirm all current requirements, fees, and deadlines.

Keep exploring: related Nevada guides