HVAC · Local (city/county) licenses

How HVAC licensing works in Illinois

State law and licensing-board sources · Last reviewed October 11, 2026

Journeyman level Licensed by cities or counties, not the state What's a journeyman?

In Illinois, the law on heating, air conditioning and refrigeration (HVAC) contractors is part of the Illinois Municipal Code: it lets each city or village examine and license HVAC contractors. Chicago doesn't issue a separate HVAC license; HVAC subcontractors there work under a licensed general contractor. Other cities, such as Aurora, make HVAC contractors register. Anyone who services refrigerant equipment also needs federal EPA Section 608 certification. [1][2][3][4][5]

New to the trade?

Starting from zero in Illinois

Illinois has no state HVAC apprentice card, so you start by getting hired by an HVAC contractor or accepted into an apprenticeship. Union programs such as Pipe Fitters Local 597 (HVAC service) and Sheet Metal Workers Local 73 take applicants from age 17 with a high school diploma or GED. Plan to earn your EPA Section 608 certification early, because you need it to work on refrigerant equipment. [1][5][12][13]

  • High school diploma or GED

    No state rule found, because Illinois law leaves HVAC licensing to towns. Programs require it: Pipe Fitters Local 597 and Sheet Metal Workers Local 73 both ask for a diploma or GED, and the free Illinois Works pre-apprenticeship at Danville Area Community College lists a diploma or GED too. [1][12][13][19]

  • Minimum age

    Set by programs: 17 for Local 597 and Local 73 18 for the Illinois Works pre-apprenticeship. [12][13][19]

  • Register before you start work

    No state HVAC worker registration exists in the state law, which lets towns license HVAC contractors (businesses). You do need EPA Section 608 certification before servicing refrigerant equipment. [1][5]

  • Aptitude test

    Local 597's test, given by GAN Human Resources, covers numerical reasoning, numerical comprehension, spatial reasoning, reading and mechanical aptitude A $20 study guide is offered. Local 73 also requires an aptitude test. [13][20]

  • Driver's license and drug test

    Local 597's HVAC program requires a valid driver's license, reliable transportation and two drug tests (hair and urine). Local 73 requires a drug test and physical when notified. [12][13]

  • Application windows

    Local 597 opens registration for application sessions on the first Wednesday of each month and holds them on the second Wednesday in Mokena ($20 fee). Local 73 says it isn't taking applications right now. [13][17]

  • Math to take

    Local 597 recommends general math, algebra, geometry/trigonometry, basic electricity and basic refrigeration and heating. [12]

  • Pay while you learn

    Local 597 apprentices earn a percentage of the journeyman wage. Local 73 says its 4-year program's classroom and job hours are all paid. [12][14]

  • Still in high school?

    High school seniors can apply to Local 597 with a letter saying they're on track to graduate. The Illinois State Board of Education's Construction program of study includes a Beginning Construction course that introduces trades such as air conditioning/refrigeration, plus dual credit and youth apprenticeship options, and districts can award a College and Career Pathway Endorsement in Manufacturing, Engineering, Technology and Trades, which takes at least 6 hours of early college credit. Illinois workNet describes youth apprenticeships for ages 16 to 24 who are in school. There's no state HVAC license, so there are no license hours for school courses to count toward. [1][17][21][22][23]

Illinois HVAC license at a glance

Who licenses
Cities and villages may examine and license HVAC contractors under 65 ILCS 5/11-32-1 [1]
Chicago
No separate HVAC trade license HVAC subcontractors work under a licensed general contractor [2][6]
Example: Aurora
HVAC contractor registration, $200 The qualifying party needs an ICC Master Mechanical certification or a test from an accepted town [3][4]
Refrigerant work
Federal EPA Section 608 certification required to service equipment that could release refrigerant [5]
Home repair law
Contractors doing residential heating and central air work must carry set insurance amounts and give written contracts over $1,000 [8][9][10]
On this page
  1. At a glance
  2. Starting from zero
  3. The license pathway
  4. Who licenses HVAC work in Illinois
  5. Chicago: HVAC work under a general contractor
  6. Aurora: HVAC contractor registration
  7. EPA Section 608 certification
  8. Rules for residential HVAC jobs
  9. Union and open-shop HVAC apprenticeships
  10. If you're licensed in another state or town
  11. Steps to get licensed
  12. Where to get the hours
  13. Licensed in another state?
  14. Questions people ask

The license pathway in Illinois

  1. 1

    Apprentice or helper

    You work for an HVAC contractor or in an apprenticeship. Union programs such as Pipe Fitters Local 597's HVAC Mechanical Service apprenticeship last 5 years, with work 4 days a week and school 1 day. [12]

  2. 2

    EPA Section 608 certified technician

    • Yes, through an EPA-approved Section 608 certification program

    Federal rules require certification before you maintain, service, repair or dispose of equipment that could release refrigerants. [5][7]

  3. 3

    HVAC contractor (local license or registration)

    • Depends on the town; Aurora accepts the ICC Master Mechanical certification or a test from an accepted town
    • Set by each town (Aurora: $200)

    Towns that license HVAC contractors set their own rules. In Chicago, HVAC contracting runs under the general contractor license. [1][2][4]

Who licenses HVAC work in Illinois

The Illinois law on heating, air conditioning and refrigeration contractors is part of the Illinois Municipal Code (65 ILCS 5/11-32-1). It says each municipality "may" provide for "examination, licensing and regulation of heating, air conditioning and refrigeration contractors," and may appoint a board of examiners to test and license them. The law defines an HVAC contractor as anyone "engaged in the business of installing, altering or servicing" heating, air conditioning or refrigerating systems.

So the rules depend on the town. Before you work or bid on a job, ask that city's or village's building department what it requires. [1]

Chicago: HVAC work under a general contractor

Chicago's Department of Buildings lists the work that needs a city trade license: general building construction, electrical, elevator, mason, plumbing and sewer work, boiler and steam engine operation, crane operation and specialty work. It doesn't list a separate HVAC license.

Instead, the city's general contractor page says subcontractors that don't need a trade license for their kind of work ("for example, a painting subcontractor or HVAC subcontractor") are listed on the permit only if they will schedule permit inspections. They work under the supervision and control of a licensed general contractor. If you contract directly with a property owner rather than under a general contractor, the city says you need your own license and must be listed on the permit. See our Illinois general contractor page for Chicago's license classes and fees. [2][6]

Aurora: HVAC contractor registration

The City of Aurora asks contractors to register with its Division of Building and Permits. Its contractor registration application lists an HVAC registration fee of $200 and requires a certificate of insurance naming the city ($1,000,000 general aggregate with $500,000 per occurrence) and workers' compensation.

A qualifying party takes the test: under the city's rule, that's the sole proprietor, a partner or a corporate officer who supervises the work and is active in the business day to day. Aurora accepts a current International Code Council (ICC) National Standard Master Mechanical certification in place of its own test, or a mechanical test from an accepted town such as Elgin, Freeport, Joliet or Rockford. Details are on the city's contractor licensing page. [3][4]

EPA Section 608 certification

Federal rules apply in every Illinois town. EPA regulations under Section 608 of the Clean Air Act require technicians who maintain, service, repair or dispose of equipment that could release ozone-depleting refrigerants to be certified. Certification comes through EPA-approved technician certification programs, which EPA lists on its certification programs page. Read our EPA 608 certification guide for the certification types and how to test. [5][7]

Rules for residential HVAC jobs

Illinois's Home Repair and Remodeling Act covers work on homes, and its definition names "central air conditioning, central heating, boilers, furnaces." A business doing this work must carry liability and property damage insurance of $100,000 per person and $300,000 per occurrence for bodily injury and $50,000 per occurrence for property damage, unless it has a net worth of at least $1,000,000.

For jobs over $1,000, the business must give the customer a written contract or work order with the total cost before starting, and a copy of the state's "Home Repair: Know Your Consumer Rights" pamphlet. [8][9][10][11]

Union and open-shop HVAC apprenticeships

Pipe Fitters Local 597's HVAC Mechanical Service Pipe Fitter apprentices maintain and repair heating, cooling and refrigeration systems in homes, commercial buildings and industrial plants. The program starts with an 11-week, 440-hour full-time pre-apprenticeship orientation, then runs 5 years with at least 1,100 hours of related instruction. Apprentices work 4 days a week for a union contractor and go to school 1 day. Construction or mechanical work experience "is helpful, but not necessary."

Sheet Metal Workers Local 73, whose members fabricate, install, maintain, test and balance sheet metal systems, runs a 4-year apprenticeship with 1,360 classroom hours. For non-union (open-shop) training, ABC's Illinois Chapter offers an HVAC program covering heating, cooling, piping, soldering and brazing, and basic electricity. You can also search the Apprenticeship Job Finder. [12][13][14][15][16]

If you're licensed in another state or town

Because there's no state HVAC license, there's no state reciprocity. Under the state law, an HVAC contractor licensed in the Illinois municipality of its principal place of business "may install" systems in any other municipality "without securing an additional license," as long as it follows the rules of the town where the work is done. Aurora still asks contractors to register and accepts mechanical tests from several Illinois towns and from California, Ohio, Utah and Wisconsin (HVAC qualifier only). Confirm with each town before you work there. [1][4]

Steps to get licensed in Illinois

  1. Get hired or join an apprenticeship

    Apply to an HVAC contractor or a program such as Pipe Fitters Local 597. Union programs ask for a high school diploma or GED and a driver's license. [12][13]

  2. Earn EPA Section 608 certification

    Get certified through an EPA-approved Section 608 certification program so you can legally work on equipment that could release refrigerant. See our EPA 608 guide. [5][7]

  3. Check the rules in each town where you'll work

    Illinois law lets each city or village license HVAC contractors, so ask the building department. In Chicago, HVAC work runs under a licensed general contractor. [1][2]

  4. License or register your own business

    To contract on your own, get the local license or registration where you work. In Aurora, a qualifying party (the sole proprietor, a partner or a corporate officer) must qualify the company with an ICC Master Mechanical certification or a test from an accepted town, and you pay $200 and show insurance. [3][4]

Where to get the hours

Programs that train HVAC technicians in or for Illinois, from their own official pages. Listed by type, not ranked.

Licensed in another state?

Questions people ask

Does Illinois have a state HVAC license?

Illinois law lets each city or village examine and license HVAC contractors (65 ILCS 5/11-32-1), so the rules are local. Chicago has no separate HVAC license; HVAC subcontractors work under a licensed general contractor. Ask the building department where you'll work. [1][2]

Do I need EPA 608 certification in Illinois?

Yes, if you maintain, service, repair or dispose of equipment that could release refrigerants. It's a federal requirement that applies everywhere. [5]

How do I get into an HVAC apprenticeship in Chicago?

Pipe Fitters Local 597 takes applications at its Mokena training center: you reserve an application session online, bring a birth certificate (age 17+), a high school diploma or GED, a driver's license and a $20 fee, then take an aptitude test. Sheet Metal Workers Local 73 also runs an apprenticeship, though it says it isn't taking applications right now. [12][13][17][18]

Do I need a license to do HVAC work in Chicago?

Chicago doesn't issue a separate HVAC license. HVAC subcontractors work under a licensed general contractor, and if you contract directly with an owner you need your own general contractor license. [2][6]

Sources (23)
  1. 65 ILCS 5/11-32-1 (Illinois Municipal Code: heating, air conditioning and refrigeration contractors), Illinois General Assembly. Accessed October 11, 2026.
  2. General Contractor License, City of Chicago Department of Buildings. Accessed October 11, 2026.
  3. Contractor Licensing, City of Aurora, Illinois. Accessed October 11, 2026.
  4. Contractor Registration Application, City of Aurora, Development Services Department, Division of Building and Permits. Accessed October 11, 2026.
  5. Section 608 Technician Certification, U.S. Environmental Protection Agency. Accessed October 11, 2026.
  6. Chicago Trade License Information Center, City of Chicago Department of Buildings. Accessed October 11, 2026.
  7. Certification Programs for Section 608 Technicians, U.S. Environmental Protection Agency. Accessed October 11, 2026.
  8. 815 ILCS 513/10 (Home Repair and Remodeling Act: definitions), Illinois General Assembly. Accessed October 11, 2026.
  9. 815 ILCS 513/25 (Home Repair and Remodeling Act: insurance required), Illinois General Assembly. Accessed October 11, 2026.
  10. 815 ILCS 513/15 (Home Repair and Remodeling Act: written contract), Illinois General Assembly. Accessed October 11, 2026.
  11. 815 ILCS 513/20 (Home Repair and Remodeling Act: consumer rights brochure), Illinois General Assembly. Accessed October 11, 2026.
  12. Programs (HVAC Mechanical Service Pipe Fitter), Pipe Fitters' Training Fund, Local Union 597. Accessed October 11, 2026.
  13. Apprenticeships, Sheet Metal Workers' Local Union 73. Accessed October 11, 2026.
  14. The Program, Sheet Metal Workers' Local Union 73. Accessed October 11, 2026.
  15. Apprenticeship, Associated Builders and Contractors, Illinois Chapter. Accessed October 11, 2026.
  16. Apprenticeship Finder, U.S. Department of Labor. Accessed October 11, 2026.
  17. Availability, Pipe Fitters' Training Fund, Local Union 597. Accessed October 11, 2026.
  18. Application Process, Pipe Fitters' Training Fund, Local Union 597. Accessed October 11, 2026.
  19. Illinois Works Pre-Apprenticeship Program Information Sheet (2026), Danville Area Community College. Accessed October 11, 2026.
  20. Testing, Pipe Fitters' Training Fund, Local Union 597. Accessed October 11, 2026.
  21. Construction Program of Study (October 2024), Illinois State Board of Education. Accessed October 11, 2026.
  22. College and Career Pathway Endorsement, Illinois State Board of Education. Accessed October 11, 2026.
  23. Key Elements of Illinois Apprenticeships, Illinois workNet. Accessed October 11, 2026.