Illinois has no state HVAC license, not even in Chicago. What actually applies: EPA 608 certification, Chicago's general contractor license for mechanical permits, and a patchwork of suburban and downstate registrations, exams and bonds.
Here is the straight answer that most licensing sites take eight paragraphs to give: Illinois has no state HVAC license. No state license for HVAC technicians, no state license for HVAC contractors, not even in Chicago. The state licenses plumbers through the Illinois Department of Public Health and roofing contractors through the Department of Financial and Professional Regulation, and it licenses fire sprinkler contractors through the State Fire Marshal. HVAC is not on that list, and neither is general contracting, which is why our Illinois contractor license guide reads so differently from the guides for licensed states in our contractor license pillar.
At a glance
- State license: Illinois has no state HVAC license.
- Statewide credential: EPA Section 608 technician certification, which applies statewide.
- Chicago: to pull building permits in Chicago, you need a Chicago General Contractor license.
- Chicago fee: $300 a year for Class E up to $3,500 for Class A in 2026.
- Suburbs and downstate: many suburbs require contractor registration with the village or city building department.
That does not mean you can hang a sign and start installing furnaces. What actually regulates HVAC work in Illinois is a three part stack: a federal refrigerant certification, Chicago's permit system (which routes through a general contractor license), and a patchwork of suburban and downstate municipal registrations, several of which come with their own exams and bonds. This 2026 guide walks through each part with the current figures from the agencies themselves, then covers the question that decides whether a growing HVAC company can actually operate in Chicago: whose license pulls the permits. This article covers the licensing process, not exam preparation.
The Three Layers That Regulate HVAC Work in Illinois
| Layer | Who issues it | What it covers |
|---|---|---|
| EPA Section 608 technician certification | U.S. EPA, through EPA approved certifying organizations | Any person who could violate the integrity of a refrigerant circuit while maintaining, servicing, repairing or disposing of equipment, statewide |
| City of Chicago general contractor license | Chicago Department of Buildings, processed by Continental Testing Services | Pulling building permits, including the mechanical permits most HVAC installations need inside the city |
| Municipal and county contractor registration or license | Each village, city or county building department | Pulling permits outside Chicago; some towns test, some bond, some only register, some require nothing |
Layer 1: EPA 608, the One Credential Every Illinois HVAC Tech Needs
Federal rule 40 CFR 82.161 requires any person who could reasonably be expected to violate the integrity of the refrigerant circuit during maintenance, service, repair or disposal of an appliance to pass a certification exam from an EPA approved technician certification program. That is EPA Section 608 technician certification, and it applies statewide: Chicago, the Cook County suburbs and every downstate town equally.
The certification has four types. Type I covers small appliances. Type II covers medium, high and very high pressure appliances, which takes in most residential and light commercial air conditioning and heat pumps. Type III covers low pressure appliances such as chillers. Universal covers all three.
EPA states plainly that Section 608 credentials do not expire. Two details from the rule matter on a job site: an apprentice may work without certification only while closely and continually supervised by a certified technician, and a certified technician must keep a copy of the certificate at the place of business.
EPA 608 is frequently mistaken for "an HVAC license." It is not. It is a federal refrigerant handling certification, and holding it does not authorize you to contract, permit or advertise HVAC services where local rules apply. Our EPA 608 vs HVAC license explainer covers the distinction in depth.
Layer 2: Chicago, No HVAC License, but Permits Need a Licensed General Contractor
Chicago does not issue an HVAC trade license. The Department of Buildings' trade license list runs to general contractors, supervising electricians, electrical contractors, plumbers and plumbing contractors, drain layer contractors, mason contractors, stationary engineers, crane operators and elevator mechanic contractors. There is no city HVAC exam, no journeyman HVAC card, no mechanical contractor certificate. But that absence is misleading, because most meaningful HVAC work in Chicago, new equipment installations, ductwork, rooftop units, boiler replacements, anything with a hardwired electrical connection or structural implications, requires a building permit from the Department of Buildings, and the city's Express Permit Program for mechanical work lists a licensed general contractor as a required contractor on every application.
And here is the catch: to pull building permits in Chicago, you need a Chicago General Contractor license. The city licenses general contractors in five classes under Municipal Code Chapter 4-36, tiered by the fair market value of all materials and labor at the site. The city's published schedule for calendar year 2026:
| Class | Maximum project value | Minimum commercial general liability | 2026 license and renewal fee |
|---|---|---|---|
| Class A | Unlimited | $5 million per occurrence | $3,500 |
| Class B | $20 million | $3 million per occurrence | $1,800 |
| Class C | $10 million | $2 million per occurrence (effective January 1, 2026) | $1,300 |
| Class D | $4 million | $2 million per occurrence (effective January 1, 2026) | $900 |
| Class E | $500,000 | $1 million per occurrence | $300 |
The license belongs to the business, including a sole proprietorship, and runs one year from issuance. There is no exam. The application goes to Continental Testing Services by mail with a statement of financial solvency, proof the business is authorized to do business in Illinois, proof of insurance from a carrier rated B+ or better by A.M. Best, and photo ID for the officers or managing members who signed.
A license is automatically inactivated the day its insurance lapses, reinstatement costs $100 for every year or part of a year it sat expired, and administrative changes cost $50. For Class C and D licenses issued before January 1, 2026, the higher insurance floor applies when the policy on file expires.
Two exemptions matter to HVAC companies. A subcontractor or employee working under the supervision and control of a licensed general contractor needs no license of its own. And a single trade project by a Chicago licensed trade contractor needs no general contractor, but HVAC is not a Chicago licensed trade, so that exemption never reaches an HVAC firm.
Now the rule our earlier version got wrong. An HVAC subcontractor only has to be listed on the permit if it will be the one scheduling inspections with the Department of Buildings. But a subcontractor scheduling inspections is listed as an "Other Construction Subcontractor," and only companies that hold a general contractor license can be added in that role.
So an HVAC company either holds its own Chicago general contractor license, or it works under a licensed general contractor who pulls the permit and schedules the inspections. There is no third path, and only one general contractor may be on a project at a time.
We cover the application mechanics in our Illinois general contractor license guide. Fees and insurance floors are set by city ordinance and change; verify the 2026 figures above with the Department of Buildings before you apply.
Chicago Mechanical Permits: What Needs One and What Does Not
The Department of Buildings publishes both a list of mechanical work that needs no permit and an Express Permit Program eligibility list for common HVAC jobs. Read together, they tell an HVAC company where the license question starts.
| Mechanical work in Chicago | Permit status |
|---|---|
| Installing or removing a portable cord and plug heating, cooling or ventilation appliance, or a domestic cooking appliance | No permit |
| Repairing an existing heating, cooling or ventilation appliance, or replacing parts without altering its function or decreasing efficiency | No permit (complete replacement needs a permit, except the residential in kind replacements below) |
| A self contained refrigeration system holding 10 pounds of refrigerant or less with motors of 1 horsepower or less | No permit, but any hardwired electrical connection needs a permit |
| Repairing or replacing in kind a boiler, a furnace or an air conditioning appliance, or an element of the associated heating system such as a radiator or ductwork, in a residential building up to 4 stories above grade (in kind means the same type, size and shape) | No permit |
| Replacing existing HVAC equipment with equipment performing the same function, even with a change of energy source, outside the residential in kind cases above | Express permit, licensed general contractor required |
| Installing a new heat pump or air conditioning system serving a single unit, with load calculations and a site plan | Express permit, licensed general contractor required |
| Installing or replacing rooftop equipment or equipment attached to a truss | Express permit, plus a structural evaluation letter from an Illinois licensed architect or structural engineer |
| New refrigeration equipment serving more than one unit, or for food cooling | Express permit, plus drawings from an Illinois licensed architect or engineer |
| A new type of equipment where none existed (a new exhaust hood), commercial kitchen exhaust reconfiguration, or work in hazardous or institutional occupancies | Not express eligible; standard permit review |
Two adjacent trades touch most Chicago HVAC jobs:
- Electrical connections run through Chicago's supervising electrician and electrical contractor structure; an electrical contractor must be owned by or employ at least one licensed supervising electrician. See the Illinois electrician license guide.
- Gas piping and hydronic connections can involve licensed plumbers, because 225 ILCS 320 reserves all plumbing to Illinois licensed plumbers and licensed apprentices. See the Illinois plumbing license guide.
Layer 3: The Suburbs and Downstate, a True Patchwork
Outside Chicago, Illinois delegates contractor regulation to individual municipalities and counties, and the requirements genuinely vary. Many suburbs require contractor registration with the village or city building department before you can pull permits, usually with an insurance certificate and a registration fee, sometimes with a bond.
Some municipalities accept a license or exam from another Illinois municipality; others require their own test. Some towns require nothing at all from an HVAC contractor. Unincorporated areas fall under county building departments with their own rules. Here is what the agencies themselves publish today:
| Jurisdiction | What an HVAC contractor needs | Fee | Exam, bond and insurance |
|---|---|---|---|
| Unincorporated Cook County | Register with the Department of Building and Zoning before working | $150 per trade to register, $75 per trade each year by December 31 | Certificate of insurance showing at least $1,000,000 in general liability naming Cook County Building and Zoning as certificate holder; the owner or a corporate officer files the initial registration |
| Unincorporated DuPage County | All general and sub contractors register with the County Building Official before a permit issues; one year term | Set by the county fee schedule (plumbers, irrigation and fire alarm contractors pay none) | Certificate of insurance naming the Building and Zoning Department |
| Downers Grove | Permits through the village portal with an owner authorization form and a list of contractors; HVAC work under the 2021 International Mechanical Code with village amendments | Permit fees applied in the portal once the application is approved | Permit bonds where applied, typically refunded once the project is satisfactorily completed |
| Evanston | Contractor registration through the Citizen Portal, renewed annually; hired contractors must be present for inspections | $125 trade contractor ($150 general contractor) | General liability $300,000 per occurrence, bodily injury $100,000, property damage $100,000, workers' compensation at statutory minimums |
| Aurora | HVAC contractor license through the Division of Building and Permits | $200 | ICC National Standard Master Mechanical certification or a test from an accepted municipality; $5,000 surety bond valid at least one year; $1,000,000 aggregate with $500,000 per occurrence plus workers' compensation |
| Springfield | Mechanical license (residential or commercial) plus mechanical contractor registration, Mechanical Ordinance Chapter 173 | $45 registration; renewal $70 for registration and license, $25 license only, $45 with an out of town license | ICC National Master Mechanical Exam G29; 5 years of experience for residential, 7 for commercial, 2 of them supervisory; $5,000 surety bond; $100,000 per person, $300,000 per occurrence, $100,000 property damage |
| Peoria | Heating and air conditioning contractor license, issued to an individual, expiring December 31 | $150, non refundable | ICC contractor test certificate for the 2018 or newer code cycle, open book, or a current license from Normal or Pekin; the holder applies for permits and must be present at inspections |
| Rockford | Mechanical license by class (A, A1, B, D, E, E1, F) after Mechanical Board approval | $218 per exam | 5 years of experience in the class, or a related degree plus 1 year, or a registered apprenticeship; 2 hour open book exam on the 2021 IMC, IFGC and IRC, second Thursday monthly |
There is no shortcut here: an HVAC company working across the metro area may hold a dozen municipal registrations at once. Before bidding in a new town, call the building department and ask two questions: do you require contractor registration or a mechanical license, and who can pull a mechanical permit?
What About an "Illinois HVAC Contractor License"?
If you see a website advertising help getting your "Illinois state HVAC license," be careful: there is no such credential. The state level licenses that touch a construction site are the IDPH plumbing license and plumbing contractor registration under 225 ILCS 320, the IDFPR roofing contractor license under 225 ILCS 335 (limited or unlimited, with a $10,000 or $25,000 bond), and the State Fire Marshal's fire sprinkler contractor license under 225 ILCS 317. Everything HVAC is federal (EPA 608) or local (a Chicago general contractor license plus permits, or a municipal registration or license).
This matters for multi state operators, because Illinois's structure is the same "no state license" model we have mapped in Pennsylvania and New York, states where the real requirement hides at the city level. For the national picture, see how to get an HVAC contractor license.
Two State Laws Every Illinois HVAC Company Still Answers To
No state license does not mean no state law. Two statutes apply to every HVAC contractor in Illinois regardless of town.
The Home Repair and Remodeling Act, 815 ILCS 513, defines home repair to include central air conditioning, central heating, boilers and furnaces. For any residential job over $1,000, the contractor must furnish a written contract or work order stating the total cost with parts and materials listed and the business name and address, and, before signing, a copy of the "Home Repair: Know Your Consumer Rights" pamphlet with a signed acknowledgment form kept by the contractor.
The Workers' Compensation Act, 820 ILCS 305/4, requires every employer under the Act, general contractors and their subcontractors named specifically, to insure its entire compensation liability with a carrier licensed in Illinois or qualify with the Commission as a self insurer. Every municipal registration in the table above asks for proof of it.
Step by Step: Setting Up to Do HVAC Work Legally in Illinois
- Get EPA Section 608 certified. Type II covers most residential and light commercial systems; Universal covers everything. Test through an EPA approved certifying organization and keep a copy of the certificate at your place of business.
- Form the business and register it. Chicago and Aurora both require proof that the business is authorized to do business in Illinois or an assumed name certificate from the county.
- Buy the insurance the permit offices will ask for. Workers' compensation the moment you have an employee, plus general liability at the level of the largest jurisdiction you plan to work in: $1 million per occurrence for a Chicago Class E license, $1,000,000 in general liability for unincorporated Cook County, $500,000 per occurrence in Aurora, $300,000 per occurrence in Evanston.
- Decide the Chicago question. If you will pull your own permits in the city, apply to Continental Testing Services for a general contractor license in the class that fits your largest project. If not, line up a licensed general contractor who will pull permits and schedule inspections on your jobs.
- Map your suburban footprint. List every municipality you expect to work in and pull its registration rules. An ICC National Standard Master Mechanical certificate stands in for the local exam in Aurora and Springfield; Peoria accepts the ICC contractor test for the 2018 or newer code cycle.
- Post the bonds. Aurora and Springfield each require a $5,000 surety bond in favor of the city.
- Build the paperwork rail for residential work. A written contract for every job over $1,000 and the consumer rights pamphlet with its acknowledgment form, per 815 ILCS 513.
- Calendar the renewals. Chicago's license runs one year from issuance and dies the day the insurance lapses; Cook County and Peoria renewals fall on December 31; Springfield's bond and registration run on the calendar year.
The License Question That Actually Decides Things: Whose License Pulls the Permits
For an HVAC business in the Chicago market, the operating question is not "where do I get an HVAC license," it is "whose license lets us pull permits."
A Chicago general contractor license belongs to the company, and the application asks for a statement of financial solvency, insurance at the level tied to the class, and photo identification for the owners or officers who sign. Growing HVAC firms hit a predictable wall: plenty of work, qualified crews, but no license structure that lets them permit their own jobs, leaving them dependent on outside general contractors and handing away margin and schedule control on every permitted project.
Outside Chicago, the towns that do license HVAC contractors tie the license to a person with a real role in the company. Aurora requires the qualifying party who takes the test to be a partner or corporate officer who supervises installation and is active in the business day to day. Springfield requires the mechanical license holder to be the registered contractor's owner, partner or officer, with proof of position. Peoria licenses the individual, who alone may apply for permits and must attend every inspection.
The state's own template, written into the roofing act at 225 ILCS 335/3, is a qualifying party who is a compensated employee under the supervision and control of the licensed business, on its payroll with FICA and withholding, never on a Form 1099.
That is the lawful way to solve the wall: put a properly credentialed individual inside the company as a genuine full time W-2 employee who anchors the license and supervises the work, a qualifying agent. Marshall Schofield and Jeremiah Jaskulski built The Licensing Company around that structure. We match credentialed professionals with contracting businesses nationwide, always as full time W-2 employees who hold a real position and take real responsibility for the work, which is exactly what Aurora, Springfield, Peoria and the Illinois roofing act describe.
If your HVAC company needs the license structure to operate in Illinois or any other state, see Hire a Qualifying Agent or request a consultation. If you hold credentials and want to put them to work for a growing company as a full time employee, see Become a Qualifying Agent.
Frequently Asked Questions
Does Illinois require an HVAC license? No. There is no state HVAC license in Illinois, and Chicago does not issue one either. EPA 608 certification is federally required for refrigerant work, Chicago requires a general contractor license to pull the permits most installations need, and many suburbs and downstate cities require their own contractor registration or mechanical license, several with an ICC exam.
Is there a City of Chicago HVAC license? No. Chicago's trade licenses cover general contractors, supervising electricians and electrical contractors, plumbers and plumbing contractors, drain layers, masons, stationary engineers, crane operators and elevator mechanics. HVAC work is regulated through building permits, and the Express Permit Program for mechanical work requires a licensed general contractor on every application.
Can I do HVAC work in Chicago without any license? Repair and maintenance that needs no permit, yes, with EPA 608 for anything touching refrigerant, and the same goes for an in kind furnace, air conditioner or boiler replacement in a residential building up to 4 stories. Other equipment replacement, new systems, ductwork extension and anything hardwired need a permit, and the permit needs a Chicago general contractor license, either your company's or that of a general contractor you work under.
How much does it cost to get licensed for HVAC in Illinois? There is no state HVAC license fee because there is no state HVAC license. Real costs are EPA 608 testing (set by the certifying organization), a Chicago general contractor license ($300 a year for Class E up to $3,500 for Class A in 2026), municipal fees such as $200 in Aurora, $150 in Peoria, $125 in Evanston and $45 in Springfield, exam fees such as Rockford's $218, the $5,000 bonds in Aurora and Springfield, and insurance. All government and vendor fees change; verify with the issuing agency. What the credential path costs a specific business depends on its structure and market, so request a consultation for a plan built around yours.
Do I need EPA certification to install an air conditioner? If the work could release refrigerant, yes. Attaching gauges, adding or removing refrigerant, or opening the circuit on an installation or a replacement all require a certified technician. An apprentice may assist only under close and continual supervision by a certified technician.
Can a homeowner install HVAC equipment in Illinois? It depends on the town. Chicago lets an individual act as general contractor on a primary residence of three stories or fewer with six or fewer units, once per calendar year, and still requires a permit for any equipment replacement that is not an in kind swap in a residential building up to 4 stories. Evanston requires an owner affidavit for each trade the owner performs. Refrigerant handling still requires EPA 608, so most homeowners hire a certified technician for that part even where owner installation is allowed.
Is EPA 608 the same as an HVAC license? No. EPA 608 is a federal refrigerant handling certification that never expires. It does not authorize contracting, permitting or advertising HVAC services where local licensing rules apply.
Does an Illinois plumbing or electrical license cover HVAC work? No, they are separate trades, but they intersect. Gas piping on a furnace installation can require a state licensed plumber, and hardwired equipment in Chicago requires a licensed electrical contractor working under a supervising electrician. Full mechanical installations often stack all three.
Sources
- City of Chicago Department of Buildings, General Contractor License (retrieved 2026-09-24)
- City of Chicago, Express Permit Program: Mechanical (HVAC) Work (retrieved 2026-09-24)
- City of Chicago, What Types of Work Do Not Require a Building Permit (retrieved 2026-09-24)
- City of Chicago, Does my project require a licensed general contractor (retrieved 2026-09-24)
- City of Chicago Department of Buildings, Trade Licensing (retrieved 2026-09-24)
- City of Chicago, Supervising Electrician License (retrieved 2026-09-24)
- City of Chicago, Electrical Contractor License (retrieved 2026-09-24)
- Continental Testing Services (City of Chicago general contractor applications and renewals) (retrieved 2026-09-24)
- U.S. EPA, Section 608 Technician Certification Requirements (retrieved 2026-09-24)
- 40 CFR 82.161, Technician certification (retrieved 2026-09-24)
- Cook County Building and Zoning, Contractor Registration (retrieved 2026-09-24)
- DuPage County Building and Zoning, Contractor Registration (retrieved 2026-09-24)
- Village of Downers Grove, Permits (retrieved 2026-09-24)
- City of Evanston, Contractor Registration (retrieved 2026-09-24)
- City of Aurora, Contractor Licensing Application (retrieved 2026-09-24)
- City of Springfield Building and Zoning, Mechanical Licensing and Registration cover letter (retrieved 2026-09-24)
- City of Springfield, Mechanical Contractor Registration application (retrieved 2026-09-24)
- City of Springfield, Mechanical License and Registration renewal (retrieved 2026-09-24)
- City of Peoria, Trade Licenses (retrieved 2026-09-24)
- City of Rockford, Mechanical and Plumbing Permits (retrieved 2026-09-24)
- City of Rockford, Mechanical License Exam Application (retrieved 2026-09-24)
- Illinois Department of Public Health, Plumbing (retrieved 2026-09-24)
- 225 ILCS 320, Illinois Plumbing License Law (retrieved 2026-09-24)
- IDFPR, Roofing Contractor (retrieved 2026-09-24)
- 225 ILCS 335, Illinois Roofing Industry Licensing Act (retrieved 2026-09-24)
- 225 ILCS 317, Fire Sprinkler Contractor Licensing Act (retrieved 2026-09-24)
- 815 ILCS 513, Home Repair and Remodeling Act (retrieved 2026-09-24)
- 820 ILCS 305/4, Workers' Compensation Act (retrieved 2026-09-24)
Talk to The Licensing Company
If your HVAC company is stuck at the permit counter in Chicago, spread across a dozen suburban registrations, or expanding into a state that does license the trade, call 615-219-2110 or start at Hire a Qualifying Agent. We will map the exact license structure your company needs and place the credentialed professional who makes it work.
Requirements and fees are set by the U.S. EPA, the City of Chicago, and individual Illinois municipalities and counties, and they change. Verify current requirements directly with the issuing agency or vendor before applying or bidding. This article covers the licensing process and is not exam preparation or legal advice.
Disclaimer: This article is provided for educational and informational purposes only. It does not constitute legal advice, licensing guidance, or an offer of services. Licensing requirements vary by jurisdiction. For specific compliance questions, contact The Licensing Company for a confidential consultation.