Mechanical / HVAC Permit (Trade Permit) in Tucson, Arizona
VerifiedRequired for heating, ventilation, and air conditioning installations in Tucson, governed by the 2024 International Mechanical Code (IMC) and International Fuel Gas Code (IFGC) as adopted by the City of Tucson (effective 1/1/2026). Issued as a Trade Permit, priced per item.
Verified 2026-07-03 · Source
When you need this permit
- Mechanical permit (Trade Permit) required for central HVAC installation/replacement, mini-split (distributed) HVAC systems, ductwork installation/replacement/modification, and non-portable evaporative coolers in most cases
- Governed by the 2024 IMC and IFGC as adopted by the City of Tucson
- Load and sizing calculations are required for BOTH new and replacement HVAC equipment
- Evaporative cooler replaced with the same type/size does NOT require a permit unless the property is in a Historic Preservation Zone or Neighborhood Preservation Zone
- Portable heating/cooling equipment plugged into a standard outlet with its original factory cord does NOT require a permit
- Trade Permit categories include Air Conditioner/Heater Repair/Replace (max 2 units per item) and Fixed Appliance
- Falls under the Express Lane (Residential Trade: 24-hour performance goal)
Required documents
- Required
Trade Permit Application
Submitted online through Tucson Development Center (TDC) Online
- Optional
Mechanical Upgrade Template
City of Tucson PDSD template documenting mechanical equipment upgrade/replacement details, load and sizing calculations
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Trade Permit — first item (e.g., Air Conditioner/Heater Repair/Replace, max 2 units) | $150.00 | City of Tucson FY27 Fee Schedule (Section 4-02.9.1); includes up to 1/2 hour of staff review and permit processing plus 2 inspections |
| Trade Permit — each additional item beyond the first | $50.00 per additional item | City of Tucson FY27 Fee Schedule (Section 4-02.9.2) |
| Digital Filing Fee | 1% of the total fee, minimum $18.54 | City of Tucson FY27 Fee Schedule (Section 4-01.5.1) |
Review timeline
1–1 business days
Tucson’s published plan-review target
Inspection process
- 1
Rough-In
Ductwork and equipment rough-in before walls closed; gas piping pressure test before concealment
- 2
Final
Equipment operational and load/sizing calculations verified against installed unit; may be completed via Remote Video Inspection for most residential work
Tips
- Load and sizing calculations are required even for a straight like-for-like HVAC replacement, not just new installations.
- A same-type/same-size evaporative cooler swap is exempt from permitting UNLESS the property sits in a Historic Preservation Zone or Neighborhood Preservation Zone.
- Air Conditioner/Heater Repair/Replace is billed as a single Trade Permit item covering up to 2 units.
- Ductwork changes of any kind (layout, sizing, full replacement) always require a Trade Permit.
Frequently asked questions
- Do I need load calculations to replace my AC unit in Tucson?
- Yes. PDSD requires load and sizing calculations for both new AND replacement HVAC equipment, not just new installations. Source: City of Tucson PDSD Residential Permits page.
Sources & verification
Verified against official sources. Last reviewed 2026-07-03.
- City of Tucson Planning & Development Services Department (PDSD) — official building department
- FY27 Planning and Permitting Fee Schedule (PDF) | City of Tucson
- Do I Need a Permit? (Exemptions) | City of Tucson PDSD
- Residential Permits | City of Tucson PDSD
- Building Codes | City of Tucson PDSD
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 Tucson building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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