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

Franklin County, Illinois HVAC Permit Requirements

In Illinois, HVAC contractors are not required to have a state-level license. However, individual municipalities and counties may have their own specific regulations and permit requirements. For properties in unincorporated areas of Franklin County, Illinois, it's important to note that building permits are generally required for any permanent structure, additions, or mobile/manufactured homes. These permits are typically obtained from the Supervisor of Assessments Office and require a fee, with approval from the County Engineer.

While specific HVAC permit requirements for unincorporated Franklin County are not explicitly detailed in the search results, the general building permit process suggests that significant HVAC installations or replacements may fall under the purview of building permits. It is advisable to contact the Franklin County Supervisor of Assessments Office directly for the most accurate and up-to-date information regarding HVAC permit requirements, especially for properties in unincorporated areas.

For properties within incorporated cities, towns, or villages in Franklin County that do not have their own zoning or city ordinances, Franklin County building permits are required. This includes areas like the Village of Orient and Mulkeytown.

It is important to be aware that while Illinois does not have statewide HVAC licensing, federal EPA certification (Section 608) is required for anyone handling refrigerants. Local jurisdictions may also have additional requirements.

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

Illinois Hvac Legislation, Codes, and Guidelines

State-Level Building Codes and Legislation for HVAC in Illinois

In Illinois, the regulatory landscape for building codes, including HVAC requirements, has historically been decentralized, with local units of government (cities and counties) having the authority to adopt and enforce their own building codes. However, this is transitioning toward a more standardized statewide framework.

The most significant statewide mandate regarding HVAC systems is the Illinois Energy Conservation Code. Under the Energy Efficient Building Act (20 ILCS 3125), the state is required to adopt the latest published edition of the International Energy Conservation Code (IECC), typically with specific Illinois amendments. As of recent updates, Illinois has adopted the 2021 IECC. This code establishes mandatory minimum efficiency standards for HVAC equipment, ductwork, and system design for both new construction and major renovations in residential and commercial buildings.

Regarding general mechanical and structural codes (such as the International Mechanical Code or International Residential Code), Illinois has historically allowed local jurisdictions to choose their own standards. However, legislation (Public Act 103-0510) has been enacted to implement a statewide building code effective January 1, 2025. Under this new framework, local codes must regulate structural design in a manner at least as stringent as the International Building Code (IBC) for new commercial buildings or the International Residential Code (IRC) for residential buildings.

It is important to note that Illinois does not issue a statewide license for HVAC contractors or technicians. Licensing, permitting, and inspection requirements are handled entirely at the local municipal or county level. Professionals must verify the specific requirements of the jurisdiction where the work is being performed.

Primary State Agencies

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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.

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