HVAC licensing in Illinois
Licensed locally, not statewide
Illinois has no statewide license for this trade. The city or county decides — check the jurisdiction the job is actually in before you travel.
✓ Verified 18 August 2026 · mixed
Bringing your license from another state
Illinois has no state HVAC license — IDFPR's own list of roughly 180 licensed professions includes roofing contractors and no HVAC credential of any kind, so the state licenses construction trades when it chooses to and has not chosen this one. Nothing transfers at state level; the jurisdiction where the job sits sets the terms, and Illinois has hundreds of home-rule jurisdictions.
Can you work while it is pending?
Nothing pending at state level. Municipal application timing is the municipality's rule.
The exam and the hours
No state exam. Municipal where one exists — and in Chicago the gate is not an HVAC trade exam at all (see local). Your personal floor is EPA 608.
How apprenticing works here
No state apprentice card. Local rules govern where they exist; registered apprenticeship runs through USDOL sponsors.
The local picture
Only Chicago is mapped, and its shape surprises people: no dedicated HVAC trade license — a general contractor license covers most construction work, with Municipal Code chapter 18-28 setting the mechanical technical requirements under the Department of Buildings. Cook County outside the city, Aurora, Naperville, Rockford, Joliet, Springfield and Peoria are unmapped.
A representative sample is the realistic goal in a state with hundreds of home-rule jurisdictions — always confirm the destination.
If you want to contract for yourself
The contracting layer is municipal too — in Chicago, the general contractor license is the instrument. One scope note: Illinois plumbing IS state-licensed (through the Department of Public Health, not IDFPR), so a dual-trade tech crossing into plumbing scope steps into a real state regime.
Checked against the state board or statute. Rules change — confirm with the board before you travel or accept work. This is information, not legal advice.
English 
Spanish