HVAC Permits

A HVAC/mechanical permit is required if any owner or authorized agent plans to construct, enlarge, remodel or change the occupancy of a building; as well as erect, install, enlarge, alter, repair, remove, convert or replace any mechanical system the installation of which is regulated by the Kentucky Building Code.

Owners or authorized agents should make an application to the building official and obtain the required permit. (Kentucky Building Code § 105.1)

Did You Know: HVAC Standards and Requirements

For a HVAC business to perform any HVAC related work in Louisville/Jefferson County which includes HVAC service or HVAC installations will require 1.) a current and in good standing Kentucky Licensed HVAC Master License; 2.) A Metro HVAC Contractor’s License. With the above satisfied, a Kentucky Licensed HVAC Journeyman may work directly for the Kentucky Licensed HVAC Master.

What should a property owner know before selecting a HVAC contractor to perform work? 

  1. Home or Business Owner should seek assistance from a company that has a current Louisville Metro contractor license in good standing. See: How to find all licensed contractors.
  2. The owner should ask to see their current pictured Kentucky HVAC Master License and Louisville Metro contractor license before they sit down to go over the new HVAC equipment installation estimate. 
  3. If the decision is made to have any new HVAC equipment installed or replaced, the HVAC contractor is required by law to obtain a Louisville Metro HVAC permit.
  4. We recommend that once the installation team arrives at the property to perform the HVAC equipment installation/repair, the owner should verify they have the required Louisville Metro HVAC permit in hand before any work begins. 
  5. It is required by law that there be a Kentucky HVAC Master Contractor or a Kentucky HVAC Journeyman on the job site for the entire duration of the HVAC equipment installation/repair.
  6. Once the HVAC installation has been completed, the HVAC contractor shall request a HVAC inspection with Louisville Metro Construction Review, either online or by emailing the customer service staff.
  7. Upon formally requesting the inspection, a Louisville Metro HVAC inspector will call the owner to set up the actual date/time of the HVAC inspection.
  8. All Louisville Metro HVAC inspectors will be in a clearly identified Louisville Metro vehicle and Louisville Metro uniform, with identification and inspector badge.
  9. After the inspection, the inspector will place an official sticker upon the equipment indicating “pass”, “final”, or “correction” status and will update the permit record on their computer/tablet. A “pass” will allow the work to continue until a final inspection is requested by the contractor. A “final” will close the permit and a formal letter of acceptance will be provided. A “correction” will require the contractor to make corrections to the equipment and request an additional inspection (an additional fee may be required).

For additional information or questions, please click here, or email us your question at [email protected] 


How does Louisville Metro handle old HVCA permits or old HVAC replacements prior installed prior to January 1, 2023?

  1. There must be an existing permit issued for HVAC replacement and was obtained prior to January 1, 2023, then:
    • If permit is expired (over 6 months old, with or without an inspection requested) then the permit shall be extended, and an inspection request submitted. Inspection may be performed, meeting the requirements and SEER rating in effect PRIOR to January 1, 2023.
    • If the permit is valid (inspection requested) an inspection request and inspection may be performed, meeting the requirements and SEER rating in effect PRIOR to January 1, 2023.
  2. For no HVAC permit in the system, they will need to be the owner or a licensed contractor and submit a permit for a new unit replacement meeting current requirements and SEER rating.

What is SEER: SEER rating is a standard for gauging an air conditioner’s efficiency. It’s an acronym for Seasonal Energy Efficiency Ratio, with higher SEER numbers indicating a more efficient AC.


Download a HVAC Permit Application HERE

Learn more about requesting an inspection for your project, click HERE


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