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PermitRoadmap

Do I need a permit for hvac replacement or installation in Kennesaw?

Permit required

Yes. In Georgia, hvac replacement or installation generally requires a permit, and Kennesaw is no exception.

Replacing a furnace, air handler, or condenser generally requires a mechanical permit in Georgia jurisdictions even when it is a like-for-like swap. Gas or electrical connections may require coordinated inspections; use a licensed mechanical contractor where required. Cobb County's own permitting office is the Cobb County Development and Inspections, reachable on 770-528-1000 at https://www.cobbcounty.gov/community-development/building-development/permitting. Its online permit portal is https://cobbca.cobbcounty.gov/CitizenAccess/default.aspx. It issues permits for the unincorporated county. If your city does not run its own building department, and many smaller Georgia municipalities do not, this is the office that will handle the job. A change-out is normally a mechanical permit, and gas fired equipment usually adds a second permit and a pressure test. Code Sec. 18-66 requires a permit to replace any mechanical system. The only mechanical exceptions are portable heating, cooling, ventilation and evaporative units, piping inside the equipment, replacement parts that do not affect the equipment's approval, and small self-contained refrigeration systems. Mechanical permits go only to a state-licensed contractor or to an owner working on the single-family home they own and occupy. Heating and air conditioning units may sit to the side or rear of the house under UDC 5.01.02.

Get the checklist for your hvac replacement or installation in Kennesaw. A free check first, then a free printable Permit Prep Pack.

Documents you may need

  • Mechanical / technical permit applicationRequired
  • Equipment specifications (capacity, model)Likely required
  • Contractor license and insurance informationLikely required
  • Residential Mechanical permit applicationLikely required
  • Contractor's Georgia business license, state license card and Georgia Energy CertificateLikely required

Possible inspections

  • Mechanical rough-in inspection (for new or relocated equipment)
  • Final mechanical inspection
  • Mechanical inspection
  • Gas test where gas piping is involved
  • Final inspection

Frequently asked questions

Do I need a permit for hvac replacement or installation in Kennesaw?
Yes. In Georgia, hvac replacement or installation generally requires a permit, and Kennesaw is no exception. The documents and inspections sections on this page list what the building department typically asks for.
Who issues the permit in Kennesaw?
The local building department for Kennesaw handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
How do I find out the exact requirements for my project?
Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.

PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.