Short answer: yes. In Salt Lake City, Salt Lake County, and surrounding Utah communities, installing or replacing a furnace, air conditioner, heat pump, water heater, or gas line requires a mechanical or plumbing permit and an inspection — even a like-for-like swap. The work must also be done by a licensed contractor. As a licensed Utah HVAC company, we pull the right permits and handle inspections as part of the job.

Why permits matter (and why "like-for-like" isn't exempt)

A common myth is that simply swapping an old unit for a new one of the same size doesn't need a permit. In the jurisdictions we serve, that's not the case — replacing heating, cooling, water-heating, or gas-line equipment triggers a permit and inspection. Permits protect you: they confirm the work meets current safety codes, they keep your manufacturer warranty and home insurance valid, and they prevent problems when you sell your home.

Who issues the permit (the "authority having jurisdiction")

Utah adopts construction codes statewide, but your local building department enforces them and issues the permit. For our service area:

  • Salt Lake City — Salt Lake City Building Services Division ( slc.gov/buildingservices).
  • Unincorporated Salt Lake County & Magna — the Greater Salt Lake Municipal Services District ( msd.utah.gov).
  • Sandy, West Jordan, West Valley City, Holladay, Herriman, and South Jordan — each city runs its own building division and issues its own mechanical/plumbing permits.
  • Tooele (Tooele County) and Provo (Utah County) — each has its own building department with the same permit requirements.

We confirm the correct authority for your address and pull the permit there — you don't have to figure out which office to call.

What codes apply in Utah right now

Utah enforces the International Code Council family of codes statewide. As of mid-2026 the state is on the 2021 editions of the building, residential, mechanical, plumbing, and fuel-gas codes, with the 2023 National Electrical Code. Note two Utah-specific points: Utah uses the International Plumbing Code (IPC), and the state is scheduled to move several codes (building, plumbing, mechanical, and fuel-gas) to their 2024 editions on July 1, 2026. Because code editions change, your installation is held to whatever is in force on your permit date.

What a code-compliant installation includes

  • A licensed contractor. HVAC and gas work must be performed under a licensed Utah contractor, and technicians handling refrigerant must hold EPA Section 608 certification.
  • A Manual J load calculation. Equipment should be sized to your home, not to a rule of thumb — important at our altitude and with our temperature swings. (See our glossary.)
  • A separate electrical permit when needed. A mechanical permit doesn't cover new circuits or a disconnect — electrical work is permitted separately.
  • Gas-line documentation and seismic bracing. Added gas appliances often require a gas-line diagram, and water heaters and equipment must be braced for our seismic zone (the Wasatch Front sits in a high seismic design category).
  • Manufacturer clearances. Furnace and water-heater clearances follow the manufacturer's installation instructions and listing label.

How Heavenly handles permits and inspections

We treat permitting as part of doing the job right: we determine the authority for your address, pull the mechanical, plumbing, gas, and/or electrical permits your project needs, install to current code, and schedule the inspection. You get equipment that's safe, warrantied, and on the record.

This guide is general information, current as of June 2026, and is not code or legal advice. Permit requirements, fees, and adopted code editions change and vary by jurisdiction — always confirm the current requirements with your local building department before starting work.