Ohio, Franklin County HVAC Permit Regulations and County Ordinances for Unincorporated Areas

HVAC Permit Requirements in Franklin County, Ohio

In Franklin County, Ohio, HVAC permits are generally required for new installations, replacement units, and modifications to existing systems. The Franklin County Building Department is responsible for issuing permits for 1-, 2-, and 3-family residential structures in unincorporated areas. For commercial buildings in unincorporated areas, the State of Ohio issues the permits. Incorporated cities and villages within the county have their own building departments.

For properties in unincorporated areas, HVAC permits are typically issued the same day if the property has a private well or cistern, after approval from Franklin County Public Health. If the property has access to public water and sewer, building permits (which include HVAC) are issued 7 to 10 days after full plan approval.

A separate permit is required for HVAC work, in addition to a general building permit. Licensed contractors are generally required for heating and electrical work. Homeowners may obtain a homeowner's permit if they are performing the work themselves, after signing an affidavit.

When applying for an HVAC permit, you will need to submit a completed application, which may include details about the equipment, venting, duct layouts, and manufacturer's specifications. The work must comply with the 2019 Residential Code of Ohio and the Ohio Mechanical Code.

Properties in Unincorporated Areas

The Franklin County Building Department has jurisdiction over residential building permits for unincorporated areas, which include properties located in townships outside of city or village limits. For these areas, a Certificate of Zoning Compliance may be required from the township or the Franklin County Economic Development and Planning Department before applying for a building permit.

Commercial building permits in unincorporated Franklin County are issued by the State of Ohio, not the county. However, the county's Building Department handles 1-, 2-, and 3-family residential structures and associated development in these unincorporated areas.

Resources to Learn More

Note: The following state-wide building codes and regulations apply universally to all jurisdictions within Ohio, including Franklin County.

Ohio Hvac Legislation, Codes, and Guidelines

Ohio HVAC Building Codes and Legislation

The state of Ohio regulates heating, ventilation, and air conditioning (HVAC) systems through a comprehensive framework of building codes. As of March 1, 2024, Ohio has adopted the 2024 editions of its state building codes, which are based on the 2021 International Codes (I-Codes) published by the International Code Council (ICC), modified with specific Ohio amendments.

Key components of this regulatory framework include:

Ohio Mechanical Code (OMC): This code governs the design, installation, and maintenance of mechanical systems, including ductwork, combustion air, exhaust systems, hydronic piping, boilers, and refrigeration. It is based on the 2021 International Mechanical Code.
Ohio Building Code (OBC): This code covers structural and fire-safety aspects that intersect with HVAC, such as equipment clearances, shaft construction, and fire/smoke damper requirements. It is based on the 2021 International Building Code.
Residential Code of Ohio (RCO): This code provides the standards for one-, two-, and three-family dwellings.
Statutory Authority: The legal foundation for these construction standards is established in Chapter 3781 of the Ohio Revised Code (ORC).

Primary Regulatory Agency

The Ohio Board of Building Standards (BBS), which operates under the Ohio Department of Commerce, is the primary agency responsible for adopting and amending the state's construction codes. The Board is tasked with establishing the rules that govern the erection, construction, repair, and alteration of buildings across the state. While the BBS sets these statewide standards, enforcement is often carried out by certified local building departments.

Resources to Learn More

Select a City in Franklin County

If your project is located within incorporated city limits, you will likely need to follow municipal ordinances rather than county rules. Select your city below to view local regulations.

Help Us Improve This Guide

Did you find a dead link, or do you have the direct link to the Franklin County permit application portal? Help us keep this information accurate by submitting an update.