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Mechanical / HVAC Permit in Unincorporated Pinal County, Arizona

Required for HVAC and mechanical system installations in unincorporated Pinal County under the 2018 IMC with county amendments. Uses the Article 5 unit-fee schedule. Like-for-like replacement of furnaces, condenser units, and evaporative coolers (same type, rating, location) for one- and two-family dwellings is permit-exempt.

Verified 2026-07-07 · Source

When you need this permit

  • Permit required for new or altered furnaces, air handlers, boilers/compressors, evaporative coolers, ventilation systems, and other mechanical equipment
  • Like-for-like replacement of HVAC equipment (furnace, condenser, evaporative cooler) with same type/rating/location for one- and two-family dwellings is permit-exempt per Information Bulletin 003
  • Site plan or floor plan showing equipment location required with application

Required documents

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Fee schedule

Mechanical permit issuanceFee Schedule No. 071013-BPFS, Article 5.
$42.00 (plus $6.50 per supplemental permit on an unexpired original permit)
Forced-air/gravity furnace or burner, up to 100,000 Btu/hFee Schedule No. 071013-BPFS, Article 5, Section 1.
$13.25
Forced-air/gravity furnace or burner, over 100,000 Btu/hFee Schedule No. 071013-BPFS, Article 5, Section 1.
$16.25
Evaporative cooler (other than portable)Fee Schedule No. 071013-BPFS, Article 5, Section 6.
$9.50
Air-handling unit up to 10,000 cfmFee Schedule No. 071013-BPFS, Article 5, Section 5.
$9.50

Review timeline

Plan reviewUnincorporated Pinal County’s published plan-review target
10–45 business days

How long did your Mechanical / HVAC Permit permit actually take in Unincorporated Pinal 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; schedule via 520-866-6299

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

Tips

  • Like-for-like HVAC replacements (same type, rating, and location) for one- and two-family dwellings do not require a permit — verify your replacement genuinely matches type/rating/location before skipping the permit.
  • The MPE (Mechanical, Plumbing, Electrical) application and review process is shared across all three trade permits — one application covers combination MPE work.

Frequently asked questions

If it's a like-for-like replacement of the same type, rating, and location for a one- or two-family dwelling, it's permit-exempt per Information Bulletin 003. Anything else (new unit, different type, different location) requires a mechanical permit. Source: https://www.pinal.gov/DocumentCenter/View/447

In Unincorporated Pinal County, the published Mechanical permit issuance is: $42.00 (plus $6.50 per supplemental permit on an unexpired original permit). Additional published fees: Forced-air/gravity furnace or burner, up to 100,000 Btu/h — $13.25; Forced-air/gravity furnace or burner, over 100,000 Btu/h — $16.25; Evaporative cooler (other than portable) — $9.50; Air-handling unit up to 10,000 cfm — $9.50. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Unincorporated Pinal County's published plan-review target for a mechanical / hvac permit is 10–45 business days.

You'll need: Mechanical/Plumbing/Electrical (MPE) Application. See the required-documents checklist on this page for details on each.

Unincorporated Pinal County requires 2 inspection(s) for a mechanical / hvac permit, in order: Rough-In / Equipment, Final. Schedule each through Pinal County Building Safety Division (Community Development Department) (520-509-3555).

Apply through Pinal County Building Safety Division (Community Development Department) at 85 N. Florence Street, 1st Floor, Florence, AZ 85132 (mailing: P.O. Box 749, Florence, AZ 85132). Phone: 520-509-3555. Office hours: Monday–Friday 8:00 AM – 4:30 PM (Florence office). District offices in Apache Junction, Oracle, and Casa Grande are listed on department bulletins but noted as closed for Community Development as of the most recent published bulletin (Information Bulletin 004, Oct 2022) — confirm current district-office status by phone before visiting. Toll-free: 1-800-208-6897. Automated inspection line: 520-866-6299 (call before midnight the day before to get the next working day; areas of Mammoth, San Manuel, Dudleyville, Kearny, Superior & Top of the World are inspected only on Wednesdays).. Official information: https://www.pinal.gov/189/Building-Safety.

Unincorporated Pinal County, Arizona has adopted: Arizona has NO statewide mandatory building code floor for general construction — code adoption is a per-city/county authority under state enabling statutes (A.R.S. Title 9 for cities, A.R.S. §11-861 et seq. for counties). Pinal County's Building Safety Division administers construction codes directly for all unincorporated areas of the county under Pinal County Development Services Code Title 6, Chapter 6.05, and — per confirmed intergovernmental agreements (IGAs) — for the incorporated towns of Kearny, Superior, and Mammoth, which do not run their own building departments. Source: Pinal County Ordinance No. 121819-BCO (adopted 18 December 2019, effective 30 days later) and Information Bulletin 011 (Dec 2022), which lists Mammoth, San Manuel, Dudleyville, Kearny, Superior & Top of the World as areas the department directly inspects.; 2018 International Building Code (IBC), adopted with Pinal County amendments (Ordinance No. 121819-BCO, Exhibit A), including adopted Appendix I (Patio Covers), Appendix J (Grading), and Appendix K (ICC Electrical Code).; 2018 International Residential Code (IRC), adopted with Pinal County amendments (Ordinance No. 121819-BCO, Exhibit B), including adopted Appendices A, B, C, H, J, N, P, and S.; 2018 International Property Maintenance Code (IPMC), adopted with amendments (Ordinance No. 121819-BCO, Exhibit C).; 2018 International Mechanical Code (IMC), adopted with amendments (Ordinance No. 121819-BCO, Exhibit D).; 2018 International Plumbing Code (IPC), adopted with amendments (Ordinance No. 121819-BCO, Exhibit E).; 2017 National Electrical Code (NEC), adopted with amendments (Ordinance No. 121819-BCO, Exhibit F), including adopted Annex H (Administration and Enforcement).; 2018 International Swimming Pool and Spa Code (ISPSC), adopted with amendments (Ordinance No. 121819-BCO, Exhibit J).; 2018 International Energy Conservation Code (IECC), adopted with amendments (Ordinance No. 121819-BCO, Exhibit I).; 2018 International Fuel Gas Code (IFGC), adopted with amendments (Ordinance No. 121819-BCO, Exhibit G).; 2018 International Fire Code (IFC), adopted with amendments (Ordinance No. 121819-BCO, Exhibit H), including adopted Appendix B (Fire Flow Requirements) and Appendix D (Fire Apparatus Access).. Local amendments apply — see the Unincorporated Pinal County overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-07-07.

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

Other permits in Unincorporated Pinal 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) and Barrier RequirementsFence / Wall / Retaining Wall PermitDemolition PermitEV Charger / EVSE Permit

Mechanical / HVAC Permit in other cities

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

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