How to get a hvac technician license in Illinois
Illinois hvac technician licensing covers hours, prerequisites, exam path, fees, and renewal. Confirm current rules on the board source before you apply.
Verified on: 2026-09-14 · Board source
From the board
- Temperature Control Series Class Spec [Skip to main content](#main_content) # Temperature ControlSeries |Code No.|Class Title|Occ.
- Period|Class Spec Effective Date|Exam Effective Date|Last Action| 2640|Temperature Control Mechanic|14 Skilled Trades|6 mo.|09/29/1992|10/15/2022|Revised| 1966|Temperature Control Sub-Foreman|14 Skilled Trades|6 mo.|09/29/1992|10/15/2022|Revised| 1829|Temperature Control Forem…
- Board page: Temperature Control Series
Requirements overview
- Illinois sets experience, education, and exam rules for hvac technician applicants
- Documented OJT or apprenticeship hours are common for journeyman / technician paths
- Master and contractor tracks usually add experience, exams, and firm paperwork
- Confirm current hour totals, affidavits, and fees on the state board before you apply
Exam
- See the Illinois hvac exam guide for vendor, scheduling, and prep
- LicenseFlo helps with paperwork and reminders — we do not sit the exam
Renewals
- Most credentials renew on a fixed cycle with mandatory CE or training
- Roster watch → intake → assemble → sign → submit
Related: Exam · Renewal and CE
Have LicenseFlo do it
From $79 per event. Text once; we collect photos, assemble the packet, and send a one-tap signature.