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
- Req
Online Permit Center Application
All mechanical permits are applied for through Permit Center online at https://maricopacountyaz-energovweb.tylerhost.net/apps/selfservice
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Air conditioner / evaporative cooler / mechanical (Minor Self Service) | $50 flat | Local Additions and Addenda Flat Rate Fees (June 2024 Summary of Fee Schedule) |
| Gas line (connect or clearance) (Minor Self Service) | $50 flat | Local Additions and Addenda Flat Rate Fees |
Review timeline
~1–15 business days
Typical estimate — confirm current times with the Unincorporated Maricopa County building department
Inspection process
- 1
Rough-In / Equipment
Equipment installed and ductwork complete before wall cover or concealment per 2018 IMC
- 2
Final
Equipment operational; combustion air and venting verified per 2018 IMC/IFGC
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
- Do I need a permit to replace my A/C unit in unincorporated Maricopa County?
- 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
Sources & verification
Verified against official sources. Last reviewed 2026-06-29.
- Maricopa County Planning and Development Department — official building department
- Construction Permit Information (Minor Permits) | Maricopa County
- Summary of the Fee Schedule, June 2024 — PDF
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.
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