How to Get a CT HVAC Contractor

To get a HVAC contractor license in Connecticut, apply for the S‑1 Unlimited Heating, Piping and Cooling Contractor license, meet experience (two years as S‑2 or equivalent), pass PSI’s trade and Business & Law exams, and pay DCP fees. Licenses renew annually on August 31.

Requirements last verified: 2026-10-12

Requirement	Details
Licensing agency	Connecticut Department of Consumer Protection (DCP), Occupational & Professional Licensing Division. See DCP’s Heating, Cooling & Sheet Metal Work page for applications, expirations, and fees. Source
License category	S-1 Unlimited Heating, Piping & Cooling Contractor (scope and eligibility set by Chapter 393 and DCP). Scope of work
Experience & education	Two years as a properly licensed S‑2 journeyperson or equivalent experience/training. For equivalency, S‑1 requires 12,000 on‑the‑job hours and 576 classroom hours. DCP equivalency chart • Out-of-state equivalency
Minimum age	At least 18 years old (statutory requirement for occupational trades under CGS Chapter 393). Legislative text citing “eighteenth birthday”
Examination	Administered by PSI: S‑1 Trade exam + Business & Law exam; each portion $59; portions valid 2 years; Spanish available for S‑1/Business & Law (effective 7/24/24). PSI Candidate Bulletin (CT Occupational Trades) • DCP confirms PSI as test vendor: DCP Exams
Application fee	$150 (non‑refundable) for contractor applications, paid to DCP via eLicense. DCP fee table • Statutory fee reference: CGS §20‑333/§20‑334a
Initial license fee	Pay the licensing fee amount shown on your PSI passing score report when you submit exam results to DCP (amount is provided with scores). PSI Candidate Bulletin (instructions)
Renewal	All heating, cooling, and sheet metal licenses expire annually on August 31; contractor renewal fee $150. Renew online via eLicense. DCP renewal policy
Insurance/Bond	No bond specified for S‑1. If you contract directly with residential owners, separate Home Improvement Contractor (HIC) registration requires general liability insurance of at least $20,000 and renews annually (current HIC renewal fee $220). HIC registration/insurance note • HIC renewal fee
Forms	Apply online (eLicense) or use the Occupational Trade Contractor Application (paper). DCP application hub • S‑series scope & eligibility

How to get a HVAC contractor license in Connecticut (S‑1)

1. Confirm eligibility. You must have two years as an S‑2 journeyperson or equivalent verified experience/training. For equivalency, be ready to document 12,000 OJT hours and 576 classroom hours. DCP equivalency criteria
2. Create your eLicense account and apply. Submit the contractor application and $150 non‑refundable fee to DCP; upload experience/education documentation as applicable. Apply via DCP
3. Get DCP exam approval. After review, DCP authorizes you for testing and you’ll receive scheduling instructions. DCP Exams
4. Schedule and pass PSI exams. Register with PSI and pass both the S‑1 Trade and Business & Law exams ($59 per portion; Spanish available for S‑1/Business & Law). PSI Candidate Bulletin
5. Submit passing scores and pay the license fee. Send PSI score reports to DCP and pay the licensing fee amount shown on your score report to activate S‑1.
6. Register separately as a Home Improvement Contractor, if applicable. If you sell/perform residential work directly with homeowners, obtain HIC registration and maintain at least $20,000 in general liability insurance. HIC requirements
7. Renew annually by August 31. Keep your contact info current in eLicense and pay the $150 contractor renewal fee each year. Renewal policy

Connecticut S‑1 HVAC contractor license: key details

The S‑1 Unlimited Heating, Piping and Cooling Contractor license authorizes all heating, piping, and cooling work as defined in CGS §20‑330, including integrated sheet metal scopes. DCP sets the experience pathway (two years as S‑2 or equivalency) and uses PSI for examinations. Scope & eligibility • Exam vendor

Fees to get and keep your CT HVAC contractor license

The DCP application fee is $150 (non‑refundable). PSI charges $59 per exam portion (you must pass Trade and Business & Law). The contractor renewal fee is $150 due annually by August 31. Your initial licensing fee amount appears on the PSI passing score report. DCP fees/renewal • PSI fees

For a deeper cost breakdown of application, testing, and renewal scenarios, see our analysis of CT HVAC contractor license cost.

Experience pathways: apprenticeship, journeyperson, or equivalency

Most applicants qualify after completing a DOL‑registered apprenticeship (8,000 hours/576 class hours) to earn S‑2, then accumulating two years (4,000 hours) as an S‑2. DCP also offers equivalency routes, including out‑of‑state license evaluation, provided you can document the S‑1 thresholds (12,000 OJT + 576 classroom). Equivalency (hours) • Out‑of‑state equivalency

Exams: format, scheduling, languages

Contractors must pass two PSI computer‑based exams: S‑1 Trade and Business & Law. Each portion costs $59 and can be retaken as needed within your eligibility window. As of July 24, 2024, S‑1 and Business & Law are also offered in Spanish (phone scheduling required). PSI Candidate Bulletin

Do residential projects? Don’t forget HIC registration

If you contract directly with homeowners, Connecticut’s Home Improvement Contractor registration is required in addition to your S‑1, and you must maintain at least $20,000 of general liability insurance. Entities must also register with the Secretary of the State before applying. HIC requirements

Who qualifies to apply (age and education)

Applicants must be at least 18 years old and meet minimum education/competency requirements under Chapter 393 (including an eighth‑grade education or equivalent). Age requirement reference • Chapter 393 overview

Frequently Asked Questions

How long does it take to get an S‑1 HVAC contractor license in Connecticut?

Timelines vary with your documentation and exam scheduling. After you apply and DCP approves you to test, you set PSI exam dates. Once you pass, submit score reports and the licensing fee shown on your report; DCP issues the license upon processing. PSI timing

Do I need both the S‑1 license and a Home Improvement Contractor registration?

Yes, if you contract directly with homeowners for residential projects, you need HIC registration (with general liability insurance) in addition to S‑1. For commercial‑only work as a subcontractor, HIC may not apply. Always verify project scope. HIC requirements

What exams are required and how much do they cost?

S‑1 candidates must pass two PSI exams: the Trade exam and the Business & Law exam. Each portion is $59. Portions are valid for two years; Spanish delivery is available for these exams. PSI Candidate Bulletin

When do S‑1 HVAC contractor licenses expire in Connecticut?

All heating, cooling, and sheet metal work licenses expire annually on August 31. Contractor renewal fee: $150. Renew via eLicense. DCP renewal policy

What if my experience is from another state?

DCP may accept an out‑of‑state license as equivalent only if it required the same classroom and OJT hours as Connecticut (for S‑1, 576 classroom + 12,000 OJT). You must document this with your application. Out‑of‑state equivalency

Where can I compare licensing steps with other CT professions?

Processes differ by agency and trade. For perspective on another DCP‑regulated path, see our guide to the CT Private Investigator License, and for cost‑planning specifics read our Connecticut private investigator license cost breakdown.

Ready to move from S‑2 to S‑1? License Navigator can map your exact Connecticut HVAC path, estimate your total cost, and keep you on schedule for PSI testing and the August 31 renewal.