CT HVAC contractor license cost

In Connecticut, expect an HVAC contractor license cost of about $418 in mandatory state and testing fees: $150 DCP application, two PSI exam portions at $59 each ($118), and a $150 initial license/first-year renewal due by August 31. Residential work often also requires a $220 Home Improvement registration.

Requirements last verified: 2026-10-01

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

1. Confirm your eligibility. Either hold an S‑2 journeyperson for at least two years or document 12,000 hours of OJT and 576 hours of related instruction for S‑1. DCP equivalent experience chart.
2. Apply with DCP and pay $150. Submit the contractor application online; DCP determines exam eligibility. Application page.
3. Schedule PSI exams. After eligibility, pay PSI $59 per exam portion and take the Business & Law and S‑1 trade exams (70% passing). PSI bulletin.
4. Pay the initial license fee. Upon passing, submit the licensing fee (currently $150 for S‑1) to DCP to activate your credential. DCP fee table.
5. Add Home Improvement registration if doing residential work. Register with DCP HIC ($220) and maintain at least $20,000 in general liability insurance. HIC requirements.
6. Renew annually by August 31. Plan for the $150 renewal and keep business information current with DCP. Renewal details.

HVAC contractor license cost in Connecticut: full breakdown

For a first-time S‑1, budget these state-mandated charges:

• $150 DCP application (non‑refundable). Source.
• $118 in PSI testing fees ($59 per portion × 2). PSI.
• $150 initial license (same as the annual renewal amount for S‑1). DCP fee table; Renewal confirmation.

Total mandatory licensing/testing fees: about $418. If you will contract directly with residential homeowners, add $220 for the required Home Improvement registration, and maintain at least $20,000 in general liability insurance (premium cost varies by carrier). HIC details.

Who qualifies for the S‑1 Unlimited Heating, Piping & Cooling Contractor?

The S‑1 authorizes all heating, piping and cooling work defined in state statute. Most applicants qualify by holding S‑2 for two years, but DCP also allows an “equivalent experience and training” path totaling 12,000 OJT hours plus 576 hours classroom training. Scope of work (S‑1); equivalency chart.

Key dates, renewal fees, and compliance

All heating/cooling trade licenses expire on August 31 each year; the contractor renewal is $150. Keep contact details current and renew online through eLicense. DCP renewal notice.

Exam format and costs for Connecticut HVAC contractors

PSI administers both the S‑1 trade and the Business & Law exams. Each portion is $59, can be retaken as needed, and requires a 70% passing score; the S‑1 trade exam has 80 questions over three hours and is available in English or Spanish. PSI bulletin.

Related Connecticut licensing resources

If you’re building a broader compliance plan across verticals, compare our deep dives on other Connecticut credentials. For example, see our analysis of Connecticut private investigator license costs and our step‑by‑step on assisted living facility licensing in Connecticut to understand how fees and timelines differ by industry.

Frequently Asked Questions

What is the total first‑year cost to become an HVAC contractor in Connecticut?

Plan on roughly $418 in mandatory licensing/testing fees: $150 DCP application, $118 for PSI exams ($59 per portion × 2), and $150 for the initial license. If you contract with residential consumers, add $220 for Home Improvement registration and maintain at least $20,000 liability coverage. DCP; PSI; HIC.

When do Connecticut HVAC contractor licenses renew and how much is renewal?

All heating, piping and cooling licenses renew annually on August 31. The contractor renewal fee is $150 (journeyperson $120). Renew through the state’s eLicense portal. Source.

What experience is required for the S‑1 Connecticut HVAC contractor license?

Either hold the S‑2 journeyperson for at least two years, or document 12,000 hours of on‑the‑job training plus 576 classroom hours under DCP’s equivalent experience pathway. DCP equivalency.

Is there a minimum age for Connecticut HVAC licensing?

Yes. State regulations require applicants to provide evidence of having attained age 18. Conn. Agencies Regs. § 20‑332‑8(d).

Do I need extra registration or insurance to work on homes?

Yes. If you contract directly with residential consumers, you must hold a Home Improvement Contractor registration ($220 annually) and maintain general liability insurance of at least $20,000. This is separate from your S‑1 license. DCP HIC requirements.

Ready to map your exact costs and timeline? License Navigator builds precise, step‑by‑step licensing plans for Connecticut HVAC contractors—so you can budget, apply, and pass on the first try.