Mechanical / HVAC Permit in Unincorporated Washoe County, Nevada
Required for heating, ventilation, air conditioning, fuel gas, and related mechanical installations in unincorporated Washoe County. Covers furnaces, A/C, heat pumps, ductwork, gas piping, gas fireplaces, wood stoves, pellet stoves, and evaporative coolers.
Verified 2026-06-30 · Source
When you need this permit
- Install or change any part of a heating or cooling system
- Furnace, A/C, heat pump, or boiler installation or replacement
- Gas piping installation or pressure testing
- Wood stoves, pellet stoves, or gas fireplace installation
- Submit via ONe NV permit portal or EZ Permit form for basic HVAC or fireplace work
Required documents
- Req
Residential Building Permit Application (2023) or EZ Permit — HVAC / Fireplace
Standard application; EZ Permit — HVAC and EZ Permit — Wood/Pellet/Gas/Electric Fireplace forms available for licensed contractors
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Permit Issuance — base fee | $45.00 | WCC Chapter 100, Appendix A, Table 4 — added to all unit fees below |
| Forced-air or gravity furnace (≤100,000 Btu/h) including ducts and vents | $20.00 | Table 4, Unit Fee Schedule item 1 |
| Forced-air or gravity furnace (>100,000 Btu/h) including ducts and vents | $26.00 | Table 4, item 1 |
| Suspended heater, recessed wall heater, or floor-mounted unit heater | $20.00 | Table 4, item 1 |
| Repair or addition to heating/cooling/absorption unit or system | $13.00 | Table 4, item 3 — applies to A/C replacements, repairs, evaporative cooler additions |
| Boiler or compressor ≤3 HP (or absorption system ≤100,000 Btu/h) | $20.00 | Table 4, item 4 |
| Evaporative cooler (non-portable) | $10.00 | Table 4, item 6 |
| Ventilation fan connected to a single duct | $7.00 | Table 4, item 7 |
| Gas piping system, 1–4 outlets | $5.00 | Table 4 — fuel-gas piping |
| Wood stove or insert (including fireplace insert) | $45.00 flat | WCC Chapter 100, Appendix A, Table 2, item 6 — separate flat fee category |
Review timeline
~3–15 business days
Typical estimate — confirm current times with the Unincorporated Washoe County building department
Inspection process
- 1
Gas Piping Pressure Test
Required before concealing gas piping — verify no leaks under test pressure
- 2
Rough-In
Ductwork and mechanical equipment rough-in before walls closed — verify clearances and support
- 3
Final
Equipment operational, combustion air verified, venting correct
Tips
- EZ Permits are available for licensed contractors for HVAC work and for fireplace installations (wood/pellet/gas/electric).
- Washoe County adopts both the IMC and UMC — for residential projects the designer may select which code applies, but must use the whole selected code.
- Manometer testing for gas lines requires a separate license and exam fee through the Washoe County Building Program ($75 for initial test + license).
Frequently asked questions
- Does furnace replacement require a mechanical permit in Washoe County?
- Yes. Furnace replacement requires a mechanical permit. The fee is $45 base plus $20 for the furnace unit (≤100,000 Btu/h), totaling $65 minimum. Submit via www.onenv.us or use the EZ Permit — HVAC form for licensed contractors.
Sources & verification
Verified against official sources. Last reviewed 2026-06-30.
- Washoe County Building Program — official building department
- Washoe County Code Chapter 100, Appendix A, Table 4 — Mechanical Permit Fees
- EZ Permit — HVAC (for licensed contractors)
- EZ Permit — Wood/Pellet/Gas/Electric Fireplace (for licensed contractors)
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Unincorporated Washoe County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
Other permits in Unincorporated Washoe County
Related guides
Get the AI compliance checklist
Upload your project scope, get a jurisdiction-specific checklist of everything you need. Coming soon.
We only use your email to send permit updates. No spam, unsubscribe anytime. Privacy.