HVAC Permit in Franklin County, Ohio
Permit required
Yes, a permit is required
Before installing or replacing a furnace, air conditioner or other fixed heating or cooling equipment, or adding warm air runs.
Issued byFranklin County Building Department (Division of Building), Franklin County Economic Development and Planning Department
By Mario Bailey, verified against official sources
Quick answer
Franklin County requires a separate heating permit for HVAC work on top of any structural building permit, and issues it on its own Application for Heating System Permit through the Division of Building. The permit must be taken out by a contractor registered with the county or by the homeowner doing the work themselves, who signs an affidavit to that effect. A contractor's license is not needed to pull a structural building permit in unincorporated Franklin County, but it is needed to perform heating work. Fees are driven by the number of warm air runs, with a minimum of $75.00 plus a 1% Ohio Board of Building Standards surcharge.
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When a permit is usually needed
Before installing or replacing a furnace, air conditioner or other fixed heating or cooling equipment, or adding warm air runs.
What an HVAC permit costs in Franklin County
How Franklin County compares in Ohio
No Ohio jurisdiction we have verified sets a size threshold for this permit, so what actually differs between them is the fee.
| Jurisdiction | Permit needed? | Typical fee |
|---|---|---|
| Cincinnati | Permit required | ...effective July 1, 2026: HVAC replacement in RCO projects is $118.00 for... |
| Cleveland | Permit required | ...three family dwellings: the minimum fee for any permit shall be... |
| Columbus | Permit required | Mechanical work uses the combined trade line, $275 standard with 2 inspections... |
| Franklin Countythis page | Permit required | ...Permit Fees: 'HVAC Permit, Each 10 runs or portion thereof $10.00'... |
How to apply in Franklin County
In Franklin County, a residential HVAC (mechanical) permit application must identify the covered equipment and scope of work, since installing, altering, or replacing a heating or cooling system is regulated work that cannot start until the application is submitted and the permit issued. The equipment itself must be picked by a real sizing calculation rather than a rule of thumb.
What most HVAC permit applications include:
- For Franklin County, a mechanical permit is required before anyone may install, alter, repair, remove, convert, or replace a heating, ventilating, or air conditioning system regulated by the code, and the work may not begin until the application is submitted and the permit is issued (IRC R105.1).
- For Franklin County, the application identifies the specific equipment being installed, such as a furnace, heat pump, or air conditioner, since the unit must be installed according to its listing and the manufacturer's installation instructions (IRC M1401.1).
- For Franklin County, the proposed equipment location must leave the clearances needed to clean coils and replace filters, blowers, motors, and controls after installation (IRC M1401.2).
- For Franklin County, the application carries the equipment sizing basis: ACCA Manual J building loads and Manual S equipment selection, or another approved sizing method, not a rule of thumb (IRC M1401.3).
- For a split system, the work covered by the permit includes refrigerant suction line insulation, since the piping is inspected against that standard once installed (IRC M1411.6).
General submittal guidance from International Residential Code (IRC), 2021 edition, Chapter 1 (Permits) and Chapter 14 (Heating and Cooling Equipment and Appliances). Source. Franklin County Building Department (Division of Building), Franklin County Economic Development and Planning Department sets the exact checklist for Franklin County.
Where to apply in Franklin County:
Franklin County Building Department (Division of Building), Franklin County Economic Development and Planning Department
- Franklin County Building Department, 142 S. Front St., Columbus, OH 43215 (the Economic Development and Planning Department offices, where zoning applications are filed, are at 150 South Front Street, FSL Suite 10, Columbus, OH 43215-7104)
- Phone: 614-525-3166
- Email: building@franklincountyohio.gov
HVAC Permit in Franklin County compared with nearby Ohio localities
| Locality | Permit needed? | Threshold | What each Ohio schedule says | Verified |
|---|---|---|---|---|
| Franklin County | Permit required | Any size | 1, 2014', Building Permit Fees: 'HVAC Permit, Each 10 runs or portion thereof $10.00'... | |
| Cincinnati | Permit required | Any size | Fee Schedule effective July 1, 2026: HVAC replacement in RCO projects is $118.00 for the... | |
| Cleveland | Permit required | Any size | ...two and three family dwellings: the minimum fee for any permit shall be... | |
| Columbus | Permit required | Any size | Mechanical work uses the combined trade line, $275 standard with 2 inspections or $140... |
Inspections and closing out your permit
In Franklin County, mechanical work gets a rough in inspection after the ductwork, refrigerant lines, and gas piping are in but before they are covered or concealed, followed by a final inspection that confirms the equipment operates correctly and its clearances, combustion air, and condensate disposal are in place. A straight equipment changeout with no new ductwork commonly gets a single final inspection instead of a separate rough in trip.
- In Franklin County: rough inspection of the mechanical and gas systems must be made before the work is covered or concealed, before fixtures or appliances are set or installed, and before the framing inspection (IRC R109.1.2).
- In Franklin County: where a cooling coil is added to an existing warm air furnace, the rough in confirms the coil is not installed upstream of the heat exchanger unless the furnace is listed for it, and that the blower can handle the added static pressure (IRC M1411.2).
- In Franklin County: the rough in and final both confirm the appliance access opening and working space are large enough to service the unit (IRC M1305.1).
- In Franklin County: at final inspection, the inspector verifies the equipment has adequate combustion air, with openings kept clear for the distance the code requires (IRC M1402.3).
- In Franklin County: final inspection also checks that the condensate line drains to an approved point of disposal with the required slope and does not create a nuisance (IRC M1411.3).
- In Franklin County: for a straight equipment changeout with no new ductwork, many permit offices require only a single final inspection, while a new installation still gets a rough in inspection before the final (common local inspection practice).
Schedule each inspection in advance and pass the final before you use the work or close the permit. Request inspections through the Franklin County permit portal or by phone at 614-525-3166.
Inspection sequence from International Residential Code (IRC), 2021 edition, Section R109 (Required Inspections) and Chapter 14 (Heating and Cooling Equipment and Appliances). Source. An open permit left un-inspected can surface later in a title search or home sale.
Your HVAC Permit checklist for Franklin County
- Confirm the requirement. Yes, a permit is required. Usually needed: Before installing or replacing a furnace, air conditioner or other fixed heating or cooling equipment, or adding warm air runs.
- Budget the fee. Franklin County EDP Fee Schedule, 'Effective Jan. 1, 2014', Building Permit Fees: 'HVAC Permit, Each 10 runs or portion thereof $10.00', 'Minimum fee $75.00', 'Registration Fee $50.00'; footnote '* Does not include 1% State Building Permit Surcharge'. Penalty Fees on the same schedule: 'Work without permit, Base penalty fee $150.00' plus '3 x fee', and 'Work without registration, Per day $150.00'. Official fee schedule.
- Apply. In Franklin County, a residential HVAC (mechanical) permit application must identify the covered equipment and scope of work, since installing, altering, or replacing a heating or cooling system is regulated work that cannot start until the application is submitted and the permit issued. The equipment itself must be picked by a real sizing calculation rather than a rule of thumb. Start at the Franklin County permit portal.
- Keep the office details handy. Franklin County Building Department (Division of Building), Franklin County Economic Development and Planning Department. Phone: 614-525-3166. Address: Franklin County Building Department, 142 S. Front St., Columbus, OH 43215 (the Economic Development and Planning Department offices, where zoning applications are filed, are at 150 South Front Street, FSL Suite 10, Columbus, OH 43215-7104).
- Plan for inspections. In Franklin County, mechanical work gets a rough in inspection after the ductwork, refrigerant lines, and gas piping are in but before they are covered or concealed, followed by a final inspection that confirms the equipment operates correctly and its clearances, combustion air, and condensate disposal are in place. A straight equipment changeout with no new ductwork commonly gets a single final inspection instead of a separate rough in trip.
Compiled from the official sources on this page. Last checked .
Frequently asked questions
- Do you need an HVAC permit in Franklin County?
- Franklin County requires a separate heating permit for HVAC work on top of any structural building permit, and issues it on its own Application for Heating System Permit through the Division of Building. The permit must be taken out by a contractor registered with the county or by the homeowner doing the work themselves, who signs an affidavit to that effect. A contractor's license is not needed to pull a structural building permit in unincorporated Franklin County, but it is needed to perform heating work. Fees are driven by the number of warm air runs, with a minimum of $75.00 plus a 1% Ohio Board of Building Standards surcharge. Always confirm with the Franklin County Building Department (Division of Building), Franklin County Economic Development and Planning Department before starting.
- How much does an HVAC permit cost in Franklin County?
- Franklin County EDP Fee Schedule, 'Effective Jan. 1, 2014', Building Permit Fees: 'HVAC Permit, Each 10 runs or portion thereof $10.00', 'Minimum fee $75.00', 'Registration Fee $50.00'; footnote '* Does not include 1% State Building Permit Surcharge'. Penalty Fees on the same schedule: 'Work without permit, Base penalty fee $150.00' plus '3 x fee', and 'Work without registration, Per day $150.00'. See the official fee schedule for current amounts.
- How long does an HVAC permit take in Franklin County?
- Electrical and/or HVAC permits will be issued the same day where the property has a private well or cistern; the county publishes no separate turnaround for other properties. Times can vary by workload and project scope, so confirm with the office.
- Where do you apply for an HVAC permit in Franklin County?
- You can apply through the Franklin County permit portal or contact the Franklin County Building Department (Division of Building), Franklin County Economic Development and Planning Department directly. The links are listed on this page.
- Can a homeowner pull an HVAC permit themselves in Franklin County?
- Under Ohio law (OAC 4101:8-1-01 Section 105.1; R.C. 3791.04(A)(1)(b); R.C. 4740.01(F)): Ohio has no statewide general contractor license, so the Residential Code of Ohio names the property owner directly as an authorized permit applicant: an owner or authorized agent who intends to construct, alter, repair, or change the occupancy of a residential building must first make application to the local certified building department and obtain approval, meaning a homeowner may pull their own permit and act as their own contractor. R.C. Chapter 4740's statewide licenses for electrical, HVAC, plumbing, refrigeration and hydronics contractors apply to 'construction projects', which R.C. 4740.01(F) defines to exclude residential buildings as defined in R.C. 3781.06, so that licensing does not reach one-, two-, or three-family home construction. In a county, township, or municipality with no residential building department certified by the state Board of Building Standards, R.C. 3791.04(A)(1)(b) and the Residential Code of Ohio's administrative rule both say the owner is not required to submit construction documents, seek approval, request inspections, or obtain a certificate of occupancy at all, which removes the state permitting framework, and with it the owner-builder question, in those jurisdictions. Confirm how Franklin County applies this before you apply.
From the Library
What else needs a permit in Franklin County
Every other permit type we have verified for this jurisdiction, with the rule that applies here.
None of the 9 project types verified for Franklin County carry a size or scope threshold. See the Permit needed column for each project's own answer, since there is no threshold to compare here.
| Project | Permit needed? | Typical fee |
|---|---|---|
| Deck Permit | Permit required | 1, 2014', Building Permit Fees: 'Decks, Under 1000 sq ft $75.00', '1000 sq ft and over... |
| Electrical Permit | Permit required | 1, 2014', still lists Building Permit Fees: 'Electric Permit, Each outlet $1.50', 'Each... |
| Fence Permit | Permit required | 1, 2014', Zoning Fees: 'Fence Permit/Zoning Compliance $25.00' |
| Patio Permit | Permit required | 1, 2014', Zoning Fees: 'Certificate of Zoning Compliance, Residential $75.00' |
| Plumbing Permit | Permit required | See schedule |
| Pool Permit | Permit required | 1, 2014', Zoning Fees: 'Certificate of Zoning Compliance, Residential $75.00' |
| Roof Replacement Permit | Permit required | 1, 2014', Building Permit Fees: 'Roof Replacement $50.00', 'Siding Replacement $50.00'... |
| Shed Permit | Permit required | 1, 2014': Building Permit Fees, 'Base Fee (first 1000 sq. ft.) $120.00' and 'Plus: Each... |
| Solar Permit | Permit required | ...County EDP: Certificate of Zoning Compliance, Residential, 'Roof Mounted $25.00'... |
HVAC Permit in other Ohio localities
Everything above, sourced
Code references
National and state model-code sections the general guidance on this page is drawn from. They are not Franklin County documents; the office above sets the local rules.
How this HVAC permit page for Franklin County was verified. 2 official sources: franklincountyohio.gov, franklincountyohio.gov; fee schedule: official document. Last checked by Mario Bailey, not confirmed with Franklin County Building Department (Division of Building), Franklin County Economic Development and Planning Department. Rules change; confirm before you build. How we verify.
Last checked: Report an error on this page