Home/License Requirements/Illinois
State Requirements

HVAC License Requirements
in Illinois

Everything you need to know about HVAC licensing in Illinois — from required certifications and exams to experience thresholds and application steps.

No State License RequiredEPA 608 Required

Key Takeaways

Illinois does not require a statewide HVAC license, but a federal EPA Section 608 certification is mandatory for anyone handling refrigerants. Local permits or registration may still apply.

  • State license: Not required statewide
  • EPA 608 certification: Required (federal)
  • Regulated by: Illinois Department of Financial and Professional Regulation (IDFPR)
Regulatory Authority
Regulatory Body
Illinois Department of Financial and Professional Regulation (IDFPR)
Visit Official Website →
Additional Notes
Illinois does not require a statewide HVAC license. However, Chicago and many other municipalities require local mechanical contractor licensing and permits.
Data source: Licensing requirements sourced from official state regulatory body publications and verified against ACCA (Air Conditioning Contractors of America) state licensing guides. EPA Section 608 requirements per 40 CFR Part 82. Last verified: June 2026. Licensing rules change — always confirm requirements directly with Illinois Department of Financial and Professional Regulation (IDFPR) before applying.
Related
Illinois Salary Data →Illinois HVAC Programs →Illinois Apprenticeships →
Next Step
Get Licensed in
Illinois.
Find an accredited HVAC training program that prepares you for Illinois licensing exams and meets experience requirements.
Browse HVAC Schools