HVAC Contractor License Illinois

To get a HVAC contractor license in Illinois, first know the state has no single, statewide HVAC license; licensing is handled locally. Commonly you’ll register as a general or mechanical/HVAC contractor with your city (e.g., Chicago or Aurora), meet insurance/bond rules, prove competency (ICC/EPA 608), and renew annually.

Requirements last verified: 2026-10-12

How to get a HVAC contractor license in Illinois

1. Confirm no state license applies. Verify Illinois has no statewide HVAC contractor license by checking the official IDFPR regulated professions list (IDFPR).
2. Choose your work jurisdictions. List every Illinois city where you’ll pull permits (Chicago, Aurora, etc.) and note each one’s contractor licensing/registration rules. Chicago’s general contractor license governs most HVAC contracting there (Chicago Ch. 4‑36).
3. Meet competency requirements. Secure EPA Section 608 certification for refrigerant work (EPA). If registering in Aurora, obtain ICC National Standard Master Mechanical (accepted in lieu of municipal testing) (Aurora).
4. Form your entity and tax accounts. Register your company with the Illinois Secretary of State (if applicable) and set up FEIN/state tax accounts so you can submit required business documents on municipal applications (referenced in §4‑36‑050).
5. Purchase insurance and any bond. Match municipal minimums before applying. Chicago CGL by class: A $5M/B $3M/C $2M/D $2M/E $1M; City listed as additional insured (§4‑36‑090) (code). Aurora: COI + $5,000 surety bond (form).
6. Apply with the city. Chicago: submit General Contractor License application and fee per class (fees in §4‑5‑120) (fees; application sample via City packet). Aurora: email the contractor registration packet and pay online upon approval (instructions).
7. Pull required mechanical permits. In Chicago, HVAC system installation/alteration requires a permit per §18‑28‑106.1; plan reviews and inspections apply (permit rule).
8. Renew every year. Track license expiration (Chicago: one year after issuance, §4‑36‑070) and keep insurance/bonds continuous to avoid suspension (renewal; insurance).

Illinois HVAC contractor licensing explained

Illinois does not issue a statewide HVAC contractor license; the Illinois Department of Financial and Professional Regulation’s official profession index omits HVAC, which leaves trade licensing/registration to local governments (IDFPR list). In Chicago, most HVAC contractors operate under the General Contractor License (Classes A–E) set out in Chapter 4‑36 of the Municipal Code (code), with exact annual fees established in §4‑5‑120 (fees).

By contrast, suburbs often license HVAC specifically. For example, the City of Aurora issues an HVAC contractor registration requiring a $200 fee, certificate of insurance naming the City as primary and non‑contributory additional insured, a $5,000 bond, and acceptance of ICC Master Mechanical certification in lieu of testing (Aurora application and criteria; program hub: Aurora Building & Permits).

Permits and inspections for HVAC work in Chicago

Chicago requires a permit before installing, altering, or replacing mechanical systems (§18‑28‑106.1) and enforces plan review and inspections (permit requirement). Additional business‑license and construction‑code provisions appear in the City’s Construction Codes portal (official code access).

EPA Section 608: a must for Illinois HVAC techs

Regardless of local licensing, federal law requires Section 608 certification for anyone servicing, maintaining, installing, or disposing of stationary A/C or refrigeration equipment that could release refrigerant (EPA Section 608).

Costs, insurance, and renewals at a glance

In Chicago, pick a license class that matches your project sizes and budget—fees: A $3,500; B $1,800; C $1,300; D $900; E $300 per §4‑5‑120 (fees). Maintain required CGL limits by class, with the City named additional insured (§4‑36‑090) (insurance). Licenses expire one year after issuance (§4‑36‑070) (term).

Related Illinois contractor guidance

If you plan to operate across trades, see our in‑depth primer on Illinois trades contractor licensing and permit rules. Expanding into investigative work for fraud or theft on job sites? Review our summary of Illinois private investigator licensing laws before offering those services.

Frequently Asked Questions

Is there a state HVAC contractor license in Illinois?

No. Illinois does not issue a statewide HVAC contractor license; the official IDFPR profession index omits HVAC, leaving licensing/registration to municipalities like Chicago and Aurora (IDFPR).

Do I need an exam to become an HVAC contractor in Illinois?

There’s no statewide trade exam. Cities can set competency rules. Aurora accepts ICC Master Mechanical certification in lieu of municipal testing (Aurora criteria). Separately, EPA Section 608 certification is federally required for refrigerant work (EPA).

What are Chicago’s HVAC licensing costs and insurance?

HVAC contractors typically obtain a Chicago General Contractor License. Annual fees: A $3,500; B $1,800; C $1,300; D $900; E $300 (§4‑5‑120). Insurance by class (CGL per occurrence): A $5M; B $3M; C $2M; D $2M; E $1M; City named additional insured (§4‑36‑090) (fees; insurance).

Does Chicago require a mechanical/HVAC permit?

Yes. A permit is required to erect, install, alter, repair, remove, convert, or replace a mechanical system (§18‑28‑106.1). Plan reviews and inspections apply (permit rule).

What does Aurora, IL, require for HVAC contractor registration?

Submit the Aurora contractor registration with $200 fee, provide insurance naming the City as primary/non‑contributory additional insured, a $5,000 surety bond, and ICC Master Mechanical proof (accepted in lieu of testing) (Aurora application).

Ready to map every local step for your company? License Navigator will build your Illinois HVAC licensing checklist—by city—with forms, fees, and renewal reminders.