HVAC Replacement — Nevada license requirements
01 The project
The starting point is the work itself — HVAC Replacement in Nevada. The job determines which trades are involved, and the trades determine which license classifications may be required.
| Component | Trade |
|---|---|
| Existing heating or cooling system | HVAC |
02 Jurisdiction
This project is evaluated for Nevada — a state that requires a contractor license at any price: NRS 624.700 makes it unlawful to engage in the business or act as a contractor, or to submit a bid, without an active license, and an unlicensed bid or contract is void ab initio. There is no statewide dollar threshold anywhere (a verified absence), the license belongs to the business and is qualified by an individual, the classification scopes live in the NAC, the Board sets a monetary ceiling and a mandatory bond — and NRS 624.035 lets every county and city require MORE. Nevada jurisdiction page.
Permit fees, plan-review timelines, exemption lists and every other city's rules were researched ONLY for the documented City of Las Vegas example (state license + city business license gate contractor permit issuance); every other Nevada locality remains LOCAL_AUTHORITY_REQUIRED, and Clark County runs its own building department (named, not researched). The official NRS/NAC host returns HTTP 403 to this environment, so statutory text was read on a non-commercial mirror retaining the official section anchors — a published limitation on the hub. State requirements are not the complete story for any locality.
03 Trade → license
Relations below are recorded per state — only this jurisdiction's classifications are shown.
Trades involved: HVAC.
- May require C-21 — Refrigeration and air-conditioning confirmed S-NV-NAC-380 rule NV-HVAC-CLASSC-21b AIR-CONDITIONING verbatim: 'installation, repair, service and maintenance of equipment, devices, machinery, units and related ductwork which use evaporation, refrigeration, boilers or combustion for the control of air temperatures…' — the replacement answer. C-21d MAINTENANCE is narrower (no complete condenser replacement on remote systems, no air handlers, no design-altering work) — rule NV-HVAC-CLASS decides which subclass the facts need. Heating/air-conditioning is named in the NRS 624.031(6)(b) carve-out: the $1,000 repair exemption NEVER applies to HVAC work, and NRS 624.220(4)(b)'s out-of-class relief excludes air-conditioning too (research §L.4).
- Alternative path C-1 — Plumbing and heating contracting confirmed S-NV-NAC-190 rule NV-HVAC-CLASSOfficial alternative for NON-refrigeration work: C-1f HEATING, COOLING AND CIRCULATING AIR covers heating, evaporative cooling and air circulation (incl. solar equipment) but expressly does NOT authorize 'cooling systems which use refrigeration as an integral part of the system' — a straight forced-air furnace or evaporative-cooler swap without refrigeration sits here (rule NV-HVAC-CLASS from the equipment facts) (research §L.4).
04 Scope
What the official sources say about the work involved — typed assertions, never a boolean "covers". Interpretations are marked as such.
- Officially included C-1 Pipes And Vents For Lp And Natural Gas Into Buildings (may_perform) NAC 624.190 (C-1g) S-NV-NAC-190 The gas-piping boundary next to C-1h water heaters (connection to EXISTING gas lines is C-1h; new piping into the building is C-1g).
- Officially included C-1 Any C 1 Subclassification Work (may_perform) NAC 624.190 S-NV-NAC-190
- Officially included C-1 Plumbing Systems Sanitary Drainage Hydronic Heating Irrigation Potable Water Heating And Building Edge Piping (may_perform) NAC 624.190 (C-1d) S-NV-NAC-190 The plumbing answer for fixtures, vents and potable-water systems (bathroom-remodel page).
- Officially included C-1 Installation Replacement And Repair Of Water Heaters With Connections Venting (may_perform) NAC 624.190 (C-1h) S-NV-NAC-190 The water-heater-replacement page's license answer, verbatim — rule NV-PLUMBING-CLASS. This subclass exists within primary C-1; it is not a separate license (FAQ #10).
- Officially included C-1 Heating Evaporative Cooling And Air Circulation Systems Including Solar Equipment (may_perform) NAC 624.190 (C-1f) S-NV-NAC-190 The non-refrigeration heating/evaporative-cooling path — rule NV-HVAC-CLASS picks C-1f vs C-21 from the equipment facts.
- Officially excluded C-1 Cooling Systems Which Use Refrigeration As An Integral Part Of The System (may_not_perform) NAC 624.190 (C-1f) S-NV-NAC-190 Half of the C-1f/C-21 heating-cooling boundary that rule NV-HVAC-CLASS evaluates.
- Officially included C-21 Installation Repair Service And Maintenance Of Temperature Control Equipment And Related Ductwork (may_perform) NAC 624.380 (C-21b) S-NV-NAC-380 The HVAC-replacement page's license answer — rule NV-HVAC-CLASS.
- Officially excluded C-21 C21d Maintenance Work Outside Parts Replacement Condenser Air Handler Or Design Altering Work (may_not_perform) NAC 624.380 (C-21d) S-NV-NAC-380 'Is a tune-up enough, or does this need the full AC license?' — the maintenance-limit boundary published on the hvac-replacement page (research §L.4).
05 Requirements
| Requirement | Kind | Statement | Source |
|---|---|---|---|
| Statewide contractor license required — no exemption-free zone but the NRS 624.031 list NRS 624.700(1)(4) (mirror + official leg.state.nv.us anchor, read 2026-10-04) + NSCB General Requirements FAQ (read 2026-10-04) | license | NRS 624.700(1) verbatim: 'It is unlawful for any person or combination of persons to: (a) Engage in the business or act in the capacity of a contractor within this State; or (b) Submit a bid on a job situated within this State, … without having an active license therefor as provided in this chapter, unless that person or combination of persons is exempted from licensure pursuant to NRS 624.031.' Subsection 4: a bid or contract submitted in violation 'shall be deemed void ab initio.' NSCB General Requirements FAQ (official): 'All businesses or individuals who construct or alter any building, highway, road, parking facility, railroad, excavation, or other structure in Nevada must be licensed by the Nevada State Contractors Board. Contractors, including subcontractors and specialty contractors must be licensed before submitting bids.' | S-NV-624-700Source S-NV-624-700 — Nevada Legislature (NRS / NAC official host)NRS 624.700 — Unlicensed contracting unlawful; void bid or contract — NRS 624.700(1)(4) (mirror + official leg.state.nv.us anchor, read 2026-10-04) + NSCB General Requirements FAQ (read 2026-10-04) https://nevada.public.law/statutes/nrs_624.700 Retrieved 2026-10-04 · last verified 2026-10-04 Read 2026-10-04 (non-commercial mirror linking the official leg.state.nv.us anchor; accessed stamp 2025-05-26). Verbatim centerpiece: 'It is unlawful for any person or combination of persons to: (a) Engage in the business or act in the capacity of a contractor within this State; or (b) Submit a bid on a job situated within this State, … without having an active license therefor as provided in this chapter, unless that person or combination of persons is exempted from licensure pursuant to NRS 624.031.' Subsection 4: a bid or contract submitted in violation 'shall be deemed void ab initio.' Contains NO dollar threshold (verified absence — research §B). |
| $1,000 repair/maintenance exemption — FIVE carve-outs each independently destroy it NRS 624.031(6)(a)–(e) verbatim (mirror + official anchor, read 2026-10-04); quoted verbatim on the NSCB Exemptions page and FAQ #3 — texts compared, agree | exemption | NRS 624.031(6): 'Any work to repair or maintain property the value of which is less than $1,000, including labor and materials, unless: (a) A building permit is required to perform the work; (b) The work is of a type performed by a plumbing, electrical, refrigeration, heating or air-conditioning contractor; (c) The work is of a type performed by a contractor licensed in a classification prescribed by the Board that significantly affects the health, safety and welfare of members of the general public; (d) The work is performed as part of a larger project: (1) The value of which is $500 or more; or (2) For which contracts of less than $500 have been awarded to evade the provisions of this chapter; or (e) The work is performed by a person who is licensed pursuant to this chapter or by an employee of that person.' | S-NV-624-031Source S-NV-624-031 — Nevada Legislature (NRS / NAC official host)NRS 624.031 — Exemptions from Chapter 624 (12 items) — NRS 624.031(6)(a)–(e) verbatim (mirror + official anchor, read 2026-10-04); quoted verbatim on the NSCB Exemptions page and FAQ #3 — texts compared, agree https://nevada.public.law/statutes/nrs_624.031 Retrieved 2026-10-04 · last verified 2026-10-04 Read 2026-10-04; quoted verbatim on the NSCB Exemptions page AND General Requirements FAQ #3, board text and mirror text compared and agree (research §F). Twelve exempt items incl. (5) owner-occupant builder (apply to the Board; 1-year sale/lease rebuttable presumption) and (6) repair/maintenance under $1,000 including labor and materials WITH five carve-outs: (a) permit required, (b) plumbing/electrical/refrigeration/heating/air-conditioning work, (c) work in a classification significantly affecting health/safety/welfare, (d) part of a larger project ≥ $500 or split-contract evasion, (e) performed by a licensee or their employee. |
| Incidental multi-craft work and the < $1,000 out-of-class relief — never for plumbing/electrical/refrigeration/AC NRS 624.220(4)(a)(b) (mirror + official anchor, read 2026-10-04) | license | NRS 624.220(4) verbatim: (a) the chapter does not prevent 'a specialty contractor from taking and executing a contract involving the use of two or more crafts or trades, if the performance of the work in the crafts or trades, other than in which the specialty contractor is licensed, is incidental and supplemental to the performance of work in the craft for which the specialty contractor is licensed'; (b) it does not prevent 'a licensed contractor from performing work of a type for which the contractor does not have a license in the applicable classification or subclassification if the value of the work is less than $1,000, including labor and materials, and the work does not require a permit' — but 'a licensed contractor shall not' do so if 'the work is of a type performed by a plumbing, electrical, refrigeration or air-conditioning contractor.' | S-NV-624-220Source S-NV-624-220 — Nevada Legislature (NRS / NAC official host)NRS 624.220 — Monetary limit on a license; incidental and out-of-classification work — NRS 624.220(4)(a)(b) (mirror + official anchor, read 2026-10-04) https://nevada.public.law/statutes/nrs_624.220 Retrieved 2026-10-04 · last verified 2026-10-04 Read 2026-10-04 (mirror + official anchor). Subsection 2 verbatim: the Board 'shall limit the field and scope of the operations of a licensed contractor by establishing a monetary limit on a contractor's license, and the limit must be the maximum contract a licensed contractor may undertake on one or more construction contracts on a single construction site or subdivision site for a single client.' Subsection 4: (a) specialty contractors may take contracts involving two or more crafts where the other work is 'incidental and supplemental' to their licensed craft; (b) a licensed contractor may perform work outside its classification if 'the value of the work is less than $1,000, including labor and materials, and the work does not require a permit' — but 'shall not' do so for plumbing, electrical, refrigeration or air-conditioning work. |
| Locales may require an ADDITIONAL contractor's license — NRS 624.035 NRS 624.035 (mirror + official anchor, read 2026-10-04) | permit | NRS 624.035 verbatim: 'The provisions of this chapter shall not be construed to prevent the governing body of any county or incorporated city requiring an additional contractor's license within such political subdivision issued subject to the applicant meeting such additional standards as are reasonable and necessary for the protection of the public in the political subdivision.' NSCB licensure therefore does not answer local permitting: every county/city may add requirements, permit fees are LOCAL_AUTHORITY_REQUIRED except the labeled Las Vegas examples, and no statewide permit-fee answer exists (research §M). | S-NV-624-035Source S-NV-624-035 — Nevada Legislature (NRS / NAC official host)NRS 624.035 — Counties and cities may require an additional contractor's license — NRS 624.035 (mirror + official anchor, read 2026-10-04) https://nevada.public.law/statutes/nrs_624.035 Retrieved 2026-10-04 · last verified 2026-10-04 Read 2026-10-04 (mirror + official anchor). Verbatim: 'The provisions of this chapter shall not be construed to prevent the governing body of any county or incorporated city requiring an additional contractor's license within such political subdivision issued subject to the applicant meeting such additional standards as are reasonable and necessary for the protection of the public in the political subdivision.' The statutory basis for Nevada's local licensing layer (research §M). |
| LOCAL EXAMPLE (Las Vegas): state license + city business license gate contractor permit issuance lasvegasnevada.gov Permit Fee Estimator + Building & Offsite Permits (served HTML, read 2026-10-04) | permit | City of Las Vegas (official pages, read 2026-10-04): Building & Offsite Permits — 'Only a Nevada licensed contractor may obtain a building permit for commercial construction.' Permit Fee Estimator — 'A valid Nevada State Contractor's license and city of Las Vegas business license are required for the issuance of permits to contractors.' Example local fees published on that page (labeled examples, NOT a fee schedule): Residential Construction Tax (habitable space only, effective 2024-01-01) 1% of construction valuation or $1,000 per dwelling unit in apartments/condos, whichever is less; Clark County Transportation Tax Act $1,000 per single-family dwelling unit; privileged tax $1.00 per commercial/industrial square foot. Also: homeowner amnesty program for self-disclosing non-permitted work; plan/no-plan permit tracks; e-plan submission mandatory for new plans since 2020-01-01; 2021 IBC/IFC adopted (effective 2023-03-23). | S-NV-LV-FEE-ESTSource S-NV-LV-FEE-EST — City of Las Vegas — Building & Offsite PermitsPermit Fee Estimator | City of Las Vegas — lasvegasnevada.gov Permit Fee Estimator + Building & Offsite Permits (served HTML, read 2026-10-04) https://www.lasvegasnevada.gov/Business/Permits-Licenses/Building-Permits/Permit-Fee-Estimator Retrieved 2026-10-04 · last verified 2026-10-04 Read 2026-10-04 from served HTML (HTTP 200). LOCAL EXAMPLE — NOT STATEWIDE. Verbatim: 'A valid Nevada State Contractor's license and city of Las Vegas business license are required for the issuance of permits to contractors.' Publishes example local fees (labeled examples, NOT a fee schedule): Residential Construction Tax (habitable space only, effective 2024-01-01) 1 % of construction valuation or $1,000 per dwelling unit in apartments/condos, whichever is less; Clark County Transportation Tax Act $1,000 per single-family dwelling unit; privileged tax $1.00 per commercial/industrial square foot. No local fee amount is published by this site as statewide (research §M). |
06 Rule: NV-HVAC-CLASS
Temperature-control classification: equipment using evaporation, refrigeration, boilers or combustion for controlling air temperature → C-21b AIR-CONDITIONING under primary C-21 (NAC 624.380); NON-refrigeration heating and evaporative cooling → C-1f under primary C-1 (NAC 624.190, which does NOT authorize cooling systems using refrigeration); C-21d MAINTENANCE excludes complete condenser replacement on remote systems, air handlers and design-altering work. Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| c21b-refrigeration-work | c21b_air_conditioning_required |
|
| c1f-non-refrigeration | c1f_heating_evaporative_cooling |
|
| c21d-cannot-cover | c21d_maintenance_subclass_excludes_this_work |
|
| c21d-sufficient | c21d_maintenance_subclass_sufficient |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-NV-NAC-380S-NV-NAC-190
07 Rule: NV-LICENSE-REQUIRED
Statewide licensing decision (NRS 624.700): it is unlawful to engage in the business or act in the capacity of a contractor in Nevada, or to submit a bid on a Nevada job, without an ACTIVE license — and a bid or contract submitted in violation is void ab initio. There is NO statewide dollar threshold (verified absence): license is required for construction/alteration regardless of price, subject only to the NRS 624.031 exemptions (SEPARATE rules NV-REPAIR-EXEMPT, NV-OWNER-BUILDER). Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| license-required | statewide_license_required |
|
| license-already-held | license_already_held |
|
| exempt | exempt_from_licensure |
|
| not-contracting | outside_chapter_624_activity |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-NV-624-700S-NV-624-020S-NV-FAQ
08 Rule: NV-REPAIR-EXEMPT
NRS 624.031(6): repair/maintenance work under $1,000 including labor and materials is exempt — UNLESS any of FIVE carve-outs applies: (a) a permit is required; (b) plumbing, electrical, refrigeration, heating or air-conditioning work; (c) work in a health/safety/welfare classification; (d) part of a larger project valued $500+ or split-contract evasion; (e) performed by a licensee or their employee. Each carve-out is its own hard outcome. The board's '$500 or more must be licensed' sentence (CONFLICT-NV-001) is NOT encoded — statute governs. Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| repair-exemption-applies | repair_exemption_applies |
|
| carveout-permit | exemption_defeated_by_carve_out |
|
| carveout-trade | exemption_defeated_by_carve_out |
|
| carveout-hsw | exemption_defeated_by_carve_out |
|
| carveout-larger-project | exemption_defeated_by_carve_out |
|
| carveout-licensee | exemption_defeated_by_carve_out |
|
| not-repair-work | repair_exemption_not_available |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-NV-624-031S-NV-624-700
09 Rule: NV-SPECIALTY-INCIDENTAL
Scope relief for LICENSED contractors (NRS 624.220(4)): (a) two-or-more-craft contracts are allowed where the other crafts are 'incidental and supplemental' to the licensed craft; (b) out-of-classification work is allowed if its value is under $1,000 including labor and materials AND no permit is required — NEVER for plumbing, electrical, refrigeration or air-conditioning work. This is not the NRS 624.031(6) exemption for unlicensed persons (separate rule NV-REPAIR-EXEMPT). Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| incidental-multicraft-allowed | incidental_multicraft_work_allowed |
|
| out-of-class-trade-bar | out_of_class_relief_barred_trade_work |
|
| out-of-class-under-1000-no-permit | out_of_class_relief_applies |
|
| out-of-class-needs-permit-or-value | additional_classification_required |
|
| out-of-class-unlicensed-caller | out_of_class_relief_unavailable_unlicensed |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-NV-624-220
10 The C-21 / C-1f boundary — and the two tests HVAC work always fails
Replacing a temperature-control system is C-21 contracting, and C-21b AIR-CONDITIONING's scope is verbatim in NAC 624.380: "installation, repair, service and maintenance of equipment, devices, machinery, units and related ductwork which use evaporation, refrigeration, boilers or combustion for the control of air temperatures…" S-NV-NAC-380
| Question | Nevada answer | Source |
|---|---|---|
| Credential for the replacement | C-21 with C-21b AIR-CONDITIONING (rule NV-HVAC-CLASS decides the subclass from the equipment facts) | S-NV-NAC-380 |
| Non-refrigeration heating / evaporative-cooler swaps | C-1f HEATING, COOLING AND CIRCULATING AIR — expressly does NOT authorize cooling systems that use refrigeration as an integral part of the system | S-NV-NAC-190 |
| C-21d MAINTENANCE | narrower than C-21b — no complete condenser replacement on remote systems, no air handlers, no design-altering work | S-NV-NAC-380 |
| $1,000 repair exemption | NEVER applies — heating and air-conditioning work is named in the carve-out (b), before the value test is even reached | S-NV-624-031 |
| Out-of-class < $1,000 relief for a licensed contractor | closed too — NRS 624.220(4)(b) never covers air-conditioning work | S-NV-624-220 |
| Local mechanical permit | LOCAL_AUTHORITY_REQUIRED — the residential contractor must obtain all necessary permits (NRS 624.970(6)); Las Vegas example below | S-NV-624-970 |
Both exits that a minor job might use are statute-barred for HVAC before any dollar amount is considered — the license answer here is classification-driven, not price-driven (research §L.4).
11 Local permit layer
The state decides WHO MAY CONTRACT; the local authority decides permits, inspections, fees and any local business license. NRS 624.035 expressly lets each county or incorporated city require an additional contractor's license "subject to the applicant meeting such additional standards as are reasonable and necessary for the protection of the public" — the OPPOSITE of Georgia's preemption. NRS 624.970(6): the residential contractor "shall apply for and obtain all necessary permits." S-NV-624-035
The researched local example is the City of Las Vegas (LOCAL EXAMPLE — NOT STATEWIDE): "Only a Nevada licensed contractor may obtain a building permit for commercial construction" and "A valid Nevada State Contractor's license and city of Las Vegas business license are required for the issuance of permits to contractors" — the state license and a city business license both gate permit issuance, and the page publishes example local fees (labeled examples, never a fee schedule). S-NV-LV-FEE-EST
Permit fees beyond those labeled examples, exemption lists, timelines and every other city's or county's rules are LOCAL_AUTHORITY_REQUIRED.
Verify the credential that actually applies on the official lookup before relying on any outcome here: NSCB Contractor License Search S-NV-LOOKUP
Source S-NV-LV-FEE-EST — City of Las Vegas — Building & Offsite Permits
Permit Fee Estimator | City of Las Vegas — lasvegasnevada.gov Permit Fee Estimator + Building & Offsite Permits (served HTML, read 2026-10-04)
https://www.lasvegasnevada.gov/Business/Permits-Licenses/Building-Permits/Permit-Fee-Estimator
Retrieved 2026-10-04 · last verified 2026-10-04
Read 2026-10-04 from served HTML (HTTP 200). LOCAL EXAMPLE — NOT STATEWIDE. Verbatim: 'A valid Nevada State Contractor's license and city of Las Vegas business license are required for the issuance of permits to contractors.' Publishes example local fees (labeled examples, NOT a fee schedule): Residential Construction Tax (habitable space only, effective 2024-01-01) 1 % of construction valuation or $1,000 per dwelling unit in apartments/condos, whichever is less; Clark County Transportation Tax Act $1,000 per single-family dwelling unit; privileged tax $1.00 per commercial/industrial square foot. No local fee amount is published by this site as statewide (research §M).