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Mechanical / HVAC Permit in Millcreek, Utah

Required for heating, ventilation, and air conditioning installations, replacements, and ductwork modifications in Millcreek. Governed by the 2024 International Mechanical Code (IMC) as adopted by Utah Code § 15A-2-103, effective July 1, 2026 (superseded the 2021 edition).

Verified 2026-06-30 · Source

When you need this permit

  • Furnace or boiler installation or replacement
  • Air conditioning system installation or replacement
  • Ductwork installation or major modification
  • Evaporative cooler installation
  • Fireplace or gas appliance installation (may also trigger gas line inspection)

Required documents

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Fee schedule

Mechanical Permit Base FeeMillcreek FY25 Consolidated Fee Schedule, Item 3, MKC § 15-16-020 (dated 8/12/2024). Covers furnace/AC, ductwork.
$70
Additional ApplianceMillcreek FY25 Consolidated Fee Schedule, Item 4, MKC § 15-16-020
$20 per additional item
Re-Inspection FeeMillcreek FY25 Consolidated Fee Schedule, Item 23, MKC § 15-08-040
$75 per occurrence
State SurchargeMillcreek FY25 Consolidated Fee Schedule, Item 29, MKC § 15-08-040
1% of permit fee

Review timeline

Plan reviewMillcreek’s published plan-review target
14–14 business days

How long did your Mechanical / HVAC Permit permit actually take in Millcreek?

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

Inspection process

  1. 1

    Mechanical Rough-In (part of Four-Way inspection for MEP projects)

    Supply ducts, return air plenums, boots, duct and plenum sealing, transfer air grills, and supports complete. Manual J/D/S may be required to verify equipment sizing. Millcreek requires a combined four-way inspection for projects with any MEP work.

  2. 2

    Final

    Equipment operational, combustion air verified, gas pressure tested, thermostat functional.

See the full Millcreek inspection guide — scheduling & re-inspection fees →

Tips

  • Like-for-like furnace and AC replacements in Millcreek still require a mechanical permit — $70 base per the FY25 fee schedule.
  • Manual J/D/S calculations may be required to verify duct and equipment sizing per Millcreek's Required Inspections guidance.
  • High-efficiency furnaces require condensate drain lines — plan routing before installation.
  • Millcreek follows the 2024 IMC, effective July 1, 2026 (superseded the 2021 edition).

Frequently asked questions

Yes. Millcreek requires a mechanical permit for all furnace replacements, including same-model swaps. The fee is $70 base per the FY25 Consolidated Fee Schedule (MKC § 15-16-020, dated 8/12/2024), plus $20 per additional appliance and a 1% state surcharge.

In Millcreek, the published Mechanical Permit Base Fee is: $70. Additional published fees: Additional Appliance — $20 per additional item; Re-Inspection Fee — $75 per occurrence; State Surcharge — 1% of permit fee. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Millcreek's published plan-review target for a mechanical / hvac permit is 14–14 business days.

You'll need: Building Permit Application (iWorQ portal). Depending on your project, Millcreek may also ask for: Equipment Specifications; Mechanical Plans with Manual J/D/S. See the required-documents checklist on this page for details on each.

Millcreek requires 2 inspection(s) for a mechanical / hvac permit, in order: Mechanical Rough-In (part of Four-Way inspection for MEP projects), Final. Schedule each through Millcreek Building Department ((801) 214-2700).

Apply through Millcreek Building Department at 1330 East Chambers Avenue, Millcreek, UT 84106. Phone: (801) 214-2700, email: buildingservices@millcreekut.gov. Office hours: Mon–Fri 8:00 AM – 5:00 PM. Official information: https://millcreekut.gov/165/Building-Services.

Millcreek, Utah has adopted: 2024 International Building Code (IBC), including Appendices C and J — currently in effect as of July 1, 2026, superseding the 2021 IBC that was in effect through June 30, 2026 (Utah Code § 15A-2-103(1)(a)); see NOTE below on Millcreek's own page lagging this update; 2021 International Residential Code (IRC), including Appendix AQ (Tiny Houses) — currently in effect; unchanged by the July 1, 2026 statewide code-edition update (Utah Code § 15A-2-103(1)(b)); 2024 International Plumbing Code (IPC) — currently in effect as of July 1, 2026, superseding the 2021 IPC that was in effect through June 30, 2026 (Utah Code § 15A-2-103(1)(d)); 2024 International Mechanical Code (IMC) — currently in effect as of July 1, 2026, superseding the 2021 IMC that was in effect through June 30, 2026 (Utah Code § 15A-2-103(1)(e)); 2024 International Fuel Gas Code (IFGC) — currently in effect as of July 1, 2026, superseding the 2021 IFGC that was in effect through June 30, 2026 (Utah Code § 15A-2-103(1)(f)); 2023 National Electrical Code (NEC) — currently in effect; unchanged by the July 1, 2026 statewide code-edition update (Utah Code § 15A-2-103(1)(g)). Millcreek's Building Services page previously referenced a 2020 NEC edition (recorded as of 2026-06-30); the 2023 NEC supersedes it statewide regardless of the page's wording; 2024 International Energy Conservation Code (IECC) — currently in effect statewide as of July 1, 2026, a single edition with no residential/commercial split under current law (Utah Code § 15A-2-103(1)(h)); Historical (superseded): prior to July 1, 2026, Millcreek's Building Services page cited a 2015 IECC edition for residential and a separate 2021 IECC edition for commercial — both are now superseded by the single 2024 IECC per § 15A-2-103(1)(h); re-checked live 2026-07-16 and Millcreek's page (millcreekut.gov/165/Building-Services, via its Building Department overview page and 'Adopted Construction Codes' resource) still displayed this superseded 2015/2021 split — city page lags the statute; 2024 International Existing Building Code (IEBC) — currently in effect as of July 1, 2026, superseding the 2021 IEBC that was in effect through June 30, 2026 (Utah Code § 15A-2-103(1)(i)); Residential provisions of the 2024 International Swimming Pool and Spa Code (ISPSC) — currently in effect as of July 1, 2026, superseding the 2021 ISPSC that was in effect through June 30, 2026 (Utah Code § 15A-2-103(1)(n)); 2006 International Wildland-Urban Interface Code (IWUIC) — millcreekut.gov/165/Building-Services; applies to Foothills/Canyons Overlay Zone properties; NOTE (updated 2026-07-16): the July 1, 2026 transition forecast in the prior version of this entry has now occurred — confirmed live against Utah Code § 15A-2-103, current version (effective 7/1/2026, superseded 1/1/2027), read at le.utah.gov/xcode/Title15A/Chapter2/15A-2-S103.html. Millcreek's own Building Department page (millcreekut.gov, live 2026-07-16) still displays a banner reading 'On July 1, 2026, the State of Utah will adopt all 2024 I-Codes with State Amendments. Any Commercial project submitted on or after July 1st will need to be designed to these standards' — forward-looking, present-tense-stale wording that also narrows the transition to Commercial projects only; the statute imposes no residential/commercial distinction for IBC/IPC/IMC/IFGC/IECC/IEBC/ISPSC, so this record treats the full 2024 edition set as governing for all project types as of 2026-07-16, and flags the city page as not yet updated to reflect that the date has passed. Local amendments apply — see the Millcreek overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-06-30.

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

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