Skip to main content
PermitBase

Mechanical / HVAC Permit in Unincorporated Maricopa County, Arizona

Required for HVAC and mechanical system installations in the unincorporated areas of Maricopa County. Maricopa County Planning and Development issues mechanical permits under the 2018 International Mechanical Code (IMC) and 2018 International Fuel Gas Code (IFGC) with local amendments. A/C, evaporative cooler, and like-for-like mechanical replacement permits are web-issued (instant). Roof-mounted HVAC units require technical/standard review. Apply through Permit Center online.

Verified 2026-06-29 · Source

When you need this permit

  • Web-issued (instant, automated): A/C replacement or new unit (ground-mounted); evaporative cooler; HVAC replacement; mechanical repair/replace like-for-like
  • Non-technical (1–2 business day processing): mechanical — new or upgrade ground-mounted unit, A/C, evaporative cooler, HVAC
  • Technical/standard review (site plan required): roof-mounted A/C, evaporative cooler, or HVAC
  • Apply online through Permit Center at https://maricopacountyaz-energovweb.tylerhost.net/apps/selfservice
  • Virtual inspections available for: Electrical Service Replacement or Upgrade to 400A (HVAC prep); Gas/Electrical Clearances

Required documents

Check off what you have — your progress is saved on this device.

Not ready yet — 0 of 1 required documents checked.

This checker covers one permit. A full project usually triggers several — our checklist will assemble all of them, free →

Fee schedule

Air conditioner / evaporative cooler / mechanical (Minor Self Service)Local Additions and Addenda Flat Rate Fees (June 2024 Summary of Fee Schedule)
$50 flat
Gas line (connect or clearance) (Minor Self Service)Local Additions and Addenda Flat Rate Fees
$50 flat

Review timeline

Plan reviewTypical estimate — confirm current times with the Unincorporated Maricopa County building department
~1–15 business days

How long did your Mechanical / HVAC Permit permit actually take in Unincorporated Maricopa County?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Rough-In / Equipment

    Equipment installed and ductwork complete before wall cover or concealment per 2018 IMC

  2. 2

    Final

    Equipment operational; combustion air and venting verified per 2018 IMC/IFGC

See the full Unincorporated Maricopa County inspection guide — scheduling & re-inspection fees →

Tips

  • Ground-mounted A/C and evaporative cooler replacements or new units are web-issued permits — instant approval through Permit Center, no staff review.
  • Roof-mounted HVAC, A/C, and evaporative cooler installations require a site plan and standard technical review.

Frequently asked questions

Yes, but it's a simple process. A ground-mounted A/C or evaporative cooler replacement is a web-issued permit ($50 flat fee) that is issued instantly online through Permit Center at https://maricopacountyaz-energovweb.tylerhost.net/apps/selfservice. A roof-mounted unit requires a site plan and standard technical review. Source: https://www.maricopa.gov/1629/Construction-Permit-Information

In Unincorporated Maricopa County, the published Air conditioner / evaporative cooler / mechanical (Minor Self Service) is: $50 flat. Additional published fees: Gas line (connect or clearance) (Minor Self Service) — $50 flat. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Plan review for a mechanical / hvac permit in Unincorporated Maricopa County typically runs 1–15 business days. This is an estimate, not a published figure — confirm current review times with Maricopa County Planning and Development Department at 602-506-3301.

You'll need: Online Permit Center Application. See the required-documents checklist on this page for details on each.

Unincorporated Maricopa County requires 2 inspection(s) for a mechanical / hvac permit, in order: Rough-In / Equipment, Final. Schedule each through Maricopa County Planning and Development Department (602-506-3301).

Apply through Maricopa County Planning and Development Department at 301 W. Jefferson, Suite 170, Phoenix, AZ 85003. Phone: 602-506-3301. Office hours: Mon–Fri 8:00 AM – 5:00 PM. Official information: https://www.maricopa.gov/797/Planning-Development.

Unincorporated Maricopa County, Arizona has adopted: 2018 International Building Code (IBC) — adopted by Maricopa County Board of Supervisors 17 August 2022 (with AZBO/MAG amendments); Local Additions and Addenda TA2022001 dated 19 September 2022; 2018 International Residential Code (IRC) — adopted 17 August 2022 (BOS vote, with AZBO/MAG amendments and Local Additions and Addenda); 2018 International Plumbing Code (IPC) — adopted 17 August 2022 (BOS vote, with AZBO/MAG amendments); 2018 International Mechanical Code (IMC) — adopted 17 August 2022 (BOS vote, with AZBO/MAG amendments); 2018 International Fuel Gas Code (IFGC) — adopted 17 August 2022 (BOS vote, with AZBO/MAG amendments); 2018 International Existing Building Code (IEBC) — adopted 17 August 2022 (BOS vote, with AZBO/MAG amendments); 2018 International Green Construction Code (IgCC) — adopted 17 August 2022, optional use; 2018 International Energy Conservation Code (IECC) — adopted 17 August 2022, optional use; 2017 National Electrical Code (NEC) — adopted 17 August 2022 (BOS vote, with AZBO/MAG amendments). Local amendments apply — see the Unincorporated Maricopa County overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-06-29.

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 Maricopa County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

Other permits in Unincorporated Maricopa County

Residential Building Permit (New Construction, Addition, Accessory Structure)Commercial Building Permit (New Construction, Tenant Improvement, Remodel)Electrical PermitPlumbing PermitSolar PV Permit (Roof-Mounted and Ground-Mounted Photovoltaic)Pool / Spa Permit (In-Ground and Above-Ground)Fence / Block Wall PermitDemolition PermitEV Charger / EVSE Permit

Mechanical / HVAC Permit in other cities

Apache Junction, ArizonaAvondale, ArizonaBenson, ArizonaBisbee, ArizonaBuckeye, ArizonaBullhead City, ArizonaCarefree, ArizonaCasa Grande, Arizona

Compare mechanical / hvac permit fees across Arizona →

Look up this fee in a different city →

Embed this data card →

Related guides

Furnace Replacement

Now live

Build your Unincorporated Maricopa County project checklist

Describe your project once and get every permit, document, and fee it triggers in Unincorporated Maricopa County — in one checklist. Sign up and pay once to generate it, or go unlimited with Pro.

Get started →