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Illinois HVAC License Requirements
Everything you need to legally start and operate an HVAC business in Illinois — licensing, insurance minimums, bonding, and official application links.
Licensing Requirements Checklist
License Type
No State Level License (Local Only)
Issuing Authority
Municipal/County Departments
Experience Required
Varies by municipality.
Exam Required
Varies locally
EPA Section 608 Certification
Required federally for handling refrigerants (all states).
Insurance & Bonding
Minimum Insurance
Varies locally
Surety Bond
Varies locally
Note: Illinois does not have a statewide HVAC license. Requirements vary by municipality — check with your local building department.
Fees & Timeline
Application Fee
Varies by municipality
Estimated Processing
4 – 12 weeks
Varies by state board workload
Ready to Apply?
Visit the official Municipal/County Departments website to start your HVAC contractor license application for Illinois.
Disclaimer: Information on this page is compiled from publicly available state resources for educational purposes. Requirements change frequently — always verify directly with the Municipal/County Departments before making business decisions.