Nevada HVAC license requirements and insurance
To work for yourself as an HVAC contractor in Nevada, you need the C-21 Refrigeration and Air-Conditioning contractor license. Nevada has 2 HVAC license types, and which one you need depends on the work you take on. The state sets no minimum liability insurance, and workers' comp is required from the first employee.
1Who needs a heating and air conditioning license in Nevada? What is this?
C-21 Refrigeration and Air-Conditioning contractor: any business that installs or services refrigerated cooling in Nevada, on homes or on commercial buildings. The license belongs to the business
| License | Who needs it | What it covers |
|---|---|---|
| C-21 Refrigeration and Air-Conditioning contractor | Any business that installs or services refrigerated cooling in Nevada, on homes or on commercial buildings. The license belongs to the business | All seven C-21 subclassifications. They cover refrigeration, air-conditioning, sheet metal, maintenance, solar air-conditioning, chilled and hot water systems, and industrial piping |
| C-21b Air-Conditioning (a narrower license inside C-21) | A business that wants to do comfort cooling and heating only, without cold rooms and freezers | Install, repair, service and maintain equipment that controls the temperature in a building by evaporation, refrigeration or combustion |
| Small-job exception (it does not cover heating or cooling) | Nobody in this trade can use it. It is here because people expect it to apply | — |
2Who issues HVAC contractor licenses in Nevada? What is this?
Nevada State Contractors Board (NSCB) issues HVAC licenses in Nevada.
See how this compares in every state: How to check a contractor's license, state by state
| Name | Nevada State Contractors Board (NSCB) |
|---|---|
| Website | nvcontractorsboard.com |
| Look up a license | app.nvcontractorsboard.com |
| The law | Nevada Revised Statutes (NRS) chapter 624 |
| The rulebook | Nevada Administrative Code (NAC) chapter 624 |
3How to become an HVAC contractor in Nevada What is this?
Nevada has 3 licenses that matter to an HVAC contractor: C-21 Refrigeration and Air-Conditioning contractor, C-21b Air-Conditioning (a narrower license inside C-21), Small-job exception (it does not cover heating or cooling). Each is below, with what you need before you apply.
| License | Experience required | Training required | Exam |
|---|---|---|---|
| C-21 Refrigeration and Air-Conditioning contractor | Four years as a journeyman, foreman, supervising employee or contractor in this trade, within the 15 years before you apply. Training at an accredited college can count for up to three of the four years | None required by the state. Federal refrigerant certification is separate | Yes, two exams run by PSI. One is the open-book business and law exam, which the board calls CMS. The other is the trade exam. You get three tries at each |
| C-21b Air-Conditioning (a narrower license inside C-21) | The same four years, in air-conditioning | — | The board sets which exams a classification needs, and an independent testing service runs them. Ask the board which apply to this subclassification |
| Small-job exception (it does not cover heating or cooling) | — | — | — |
4How much does an HVAC license cost in Nevada? What is this?
The government fees on this page add up to about $900 in Nevada. Add insurance, tools, and a vehicle to get the real number.
| License | Application | First license | Renewal | Late renewal | Recovery fund fee |
|---|---|---|---|---|---|
| C-21 Refrigeration and Air-Conditioning contractor | $300 | $600 | $600 | $150 | $200 |
| C-21b Air-Conditioning (a narrower license inside C-21) | — | — | — | — | — |
Added up
| Government fees, added up | $900 |
|---|
Does not include the exam fees paid to PSI, fingerprinting, the EPA 608 test, the CPA's charge for your financial statement, the bond premium, workers' comp, tools or a vehicle
5How much HVAC insurance do you need in Nevada? What is this?
Nevada sets no minimum liability insurance for this license. Customers and general contractors usually ask for $1,000,000 anyway. Workers' comp is required from the first employee.
| Minimum liability insurance | None required by the state |
|---|---|
| Type of policy | None found. The board's pages list a bond, a qualifying person and workers' comp for an active license, and do not list liability insurance |
| Who this applies to | The state does not set a liability figure. Customers, builders and cities will still ask to see a policy |
| Who must be named on the certificate | Not applicable |
| Workers' comp required? | Yes |
| Workers' comp: what to know | Every contractor must show the board proof of workers' comp when applying. The proof can be a policy, a self-insurance certificate, or a signed statement that you have no employees. |
| Who can opt out |
|
6Does Nevada check your credit for an HVAC contractor license? What is this?
What Nevada wants to see about your finances.
| What you have to show | A financial statement with your application. The board uses it, with your experience, to set the largest job you may take on |
|---|---|
| How it works |
|
| Type of financial statement |
|
7Does an HVAC contractor need a bond in Nevada? What is this?
Nevada requires a bond. A bond is a promise, backed by an insurance company, that customers can be paid if you do not finish the job.
| Does the state require a bond? | Yes |
|---|---|
| Amount | Not listed yet |
| Instead of a bond | You can give the board a cashier's check instead. The board charges $200 every two years to hold it, and keeps the money for two years after the license ends. |
| Home improvement bond | On home improvement jobs you may not take a deposit above $1,000 or 10 percent of the price, whichever is less. Post a separate $100,000 consumer protection bond and that cap no longer applies. |
| Recovery fund fee | If you work on homes you also pay into the Residential Recovery Fund every two years. A harmed homeowner can be paid up to $40,000 from it. |
A bond is a promise, backed by an insurance company, that customers can be paid if you do not finish the job or do it badly. The board sets your amount one license at a time, anywhere from $1,000 to $500,000. It looks at your license type, your monetary limit, your finances and your experience. The bond must run with no gaps.
8Federal rules that also apply What is this?
Rules from the US government that apply to an HVAC contractor in Nevada on top of the state's own.
| EPA refrigerant certification |
|
|---|
9Where must a Nevada HVAC contractor show the license number? What is this?
In Nevada: every bid and every contract must show your license number and the monetary limit on your license.
| On quotes, contracts, and invoices | Every bid and every contract must show your license number and the monetary limit on your license |
|---|---|
| On ads | Every ad must show your company name and your license number. The law counts signs, vehicles, print, radio and TV, websites and directory listings as ads |
| On your vehicles | Each commercial vehicle registered in your name shows your name and license number, in letters and numbers about 1.5 inches high |
| If you forget |
|
10Does an HVAC contractor charge sales tax on labor in Nevada? What is this?
In Nevada, no sales tax on your labor when the job is a contract to improve a building. The law leaves the price of labor for installing or applying property out of the taxed amount. The rest of the rules are below.
See how this compares in every state: Can you charge sales tax on labor? The rule in 25 states
| Who pays tax on materials |
|
|---|---|
| Labor | No sales tax on your labor when the job is a contract to improve a building. The law leaves the price of labor for installing or applying property out of the taxed amount |
| The exception that catches people out |
|
| Homes versus businesses | No difference. The rule covers any building, home or business |
| New buildings versus repairs | No difference. The rule names building, remodeling, altering, adding to and repairing, and treats them all the same way |
| Do you register to collect tax? | If you only do contract work and never sell goods over the counter, you do not need a seller's permit. You report any unpaid tax on a Consumer Use Tax return |
| Tax rate | 6.85 percent is the state base rate. Counties add to it. Clark County is 8.375 percent and Washoe County is 8.265 percent |
11Getting paid: lien and notice deadlines for a Nevada HVAC contractor What is this?
If you are not paid in Nevada, a lien on the property is your backstop, but only if your notice goes out on time: any time after you start, but your lien only reaches back 31 days before the day you give it (notice given on April 10 covers work from March 10 onward). Hand it to the owner or send it by certified mail.
- Day 0Your first day on the job
The clock starts here.
- Day 31Send your notice
Any time after you start, but your lien only reaches back 31 days before the day you give it (notice given on April 10 covers work from March 10 onward). Hand it to the owner or send it by certified mail
- Day 90File your lien
Record the lien within 90 days after the job is complete or after your last work or delivery, whichever is latest (last day June 1 means record by August 30). If the owner records a notice of completion, you have 40 days from that recording
Each day count is counted from the day the rule beside it names, which is not always the same day. Read the sentence under each one.
| Who has to send a notice |
|
|---|---|
| Send your notice by | Any time after you start, but your lien only reaches back 31 days before the day you give it (notice given on April 10 covers work from March 10 onward). Hand it to the owner or send it by certified mail |
| File your lien by | Record the lien within 90 days after the job is complete or after your last work or delivery, whichever is latest (last day June 1 means record by August 30). If the owner records a notice of completion, you have 40 days from that recording |
| About home jobs | On a home job you must first serve a 15-day notice of intent to lien on the owner and the prime contractor. Serving it adds 15 days to your recording deadline. |
12How do you renew an HVAC license in Nevada? What is this?
The C-21 Refrigeration and Air-Conditioning contractor renews every two years. No training hours are required.
| License | Renewal | Training hours each renewal |
|---|---|---|
| C-21 Refrigeration and Air-Conditioning contractor | Every two years | — |
| C-21b Air-Conditioning (a narrower license inside C-21) | Every two years | — |
Renewal fees are in what the license costs. The official page for each license is linked under how you get it.
13What catches people out in Nevada What is this?
The things people get wrong or do not expect about Nevada, in a few sentences.
- Heating and cooling are split across two licenses in Nevada. Refrigerated air-conditioning is C-21. Furnaces, ducts and swamp coolers on their own are C-1f, a piece of the plumbing and heating license.
- A shop that only services existing units can hold the small C-21d license. It stops short of swapping a whole condenser or changing how a system is designed.
- The $1,000 handyman exception that Nevada gives other trades is closed to refrigeration, heating and air-conditioning work. A paid tune-up needs a contractor license behind it.
- Your C-21 license carries a monetary limit, and no single cooling job may go above it. The board sets that limit, and your bond of $1,000 to $500,000, from your financial statement.
- A subcontractor's lien reaches back only 31 days from the day the owner gets the notice of right to lien. On a house you also owe a 15-day warning before you record.
·6 official pages
- law.cornell.edu/regulations/nevada/NAC-624-380
- law.cornell.edu/regulations/nevada/NAC-624-190
- nevada.public.law/statutes/nrs_624.031
- nevada.public.law/statutes/nrs_624.220
- nevada.public.law/statutes/nrs_108.245
- nvcontractorsboard.com/wp-content/uploads/2025/04/Nevada-State-Contractors-Board-Handbook-2024.pdf
14Where these numbers come from
The labels under each table are explained on how to read a page.
- nvcontractorsboard.com/
- nvcontractorsboard.com/licensing/license-classifications/
- nvcontractorsboard.com/licensing/faq-for-general-requirements/
- nvcontractorsboard.com/licensing/contractors-license-application/
- nvcontractorsboard.com/licensing/license-examinations/
- nvcontractorsboard.com/resources/faq-central/
- law.cornell.edu/regulations/nevada/NAC-624-380
- law.cornell.edu/regulations/nevada/NAC-624-190
- nevada.public.law/statutes/nrs_624.260
- nvcontractorsboard.com/wp-content/uploads/2025/04/Nevada-State-Contractors-Board-Handbook-2024.pdf
- nevada.public.law/statutes/nrs_624.280
- nevada.public.law/statutes/nrs_624.283
- nevada.public.law/statutes/nrs_624.470
- nevada.public.law/statutes/nrs_624.031
- nevada.public.law/statutes/nrs_624.256
- nevada.public.law/statutes/nrs_616b.612
- law.cornell.edu/regulations/nevada/NAC-624-593
- nevada.public.law/statutes/nrs_624.220
- nvcontractorsboard.com/licensing/bonds/
- nevada.public.law/statutes/nrs_624.270
- nevada.public.law/statutes/nrs_624.510
- epa.gov/section608/section-608-technician-certification-requirements
- law.cornell.edu/regulations/nevada/NAC-624-640
- nevada.public.law/statutes/nrs_624.720
- nevada.public.law/statutes/nrs_624.288
- leg.state.nv.us/nac/nac-372.html
- law.cornell.edu/regulations/nevada/NAC-372-200
- law.cornell.edu/regulations/nevada/NAC-372-190
- nevada.public.law/statutes/nrs_372.025
- tax.nv.gov/tax-types/sales-tax-use-tax/
- nevada.public.law/statutes/nrs_108.245
- nevada.public.law/statutes/nrs_108.226