HVAC Technician License Requirements in Connecticut
| Licensing Authority | Department of Consumer Protection (DCP) |
| License Type | S-1 Unlimited Heating, Piping, and Cooling Contractor |
| Experience Required | S-1 Contractor: 2 years as a licensed S-2 journeyperson or equivalent experience. S-2 Journeyperson: completion of registered apprenticeship (8,000 hours OJT + 720 hours classroom instruction) or equivalent experience and training. |
| Education Substitute | Accredited HVAC or mechanical program may substitute for a portion of the apprenticeship requirement |
| Exam Required | Yes — S-2 Unlimited HVAC Journeyperson Exam + S-1 Unlimited HVAC Contractor Exam (Trade + Business & Law) |
| Bond Required | No |
| Insurance | General liability: recommended. Workers comp: required with employees |
| Continuing Education | 4 hours 1 year |
| Processing Time | 4-8 weeks |
Fee Breakdown
| Application Fee | $150 |
| Exam Fee | $130 |
| Initial License Fee | $150 |
| Est. Initial Total | $430 |
Related & additional fees
Separate or ongoing costs — not included in the estimate above.
| Journeyperson application fee | $90 |
| Journeyperson initial license | $120 |
| Journeyperson annual renewal | $120 |
Renewal: $150 every 1 year (expires August 31)
Exam Requirements
S-2 Unlimited HVAC Journeyperson Exam
S-1 Unlimited HVAC Contractor Exam (Trade + Business & Law)
Exam provider: PSI
Recommended exam prep
Formal prep pays for itself against a $100+ retake. Many states examine contractors on two separate papers — the trade exam and a business and law exam — so we list the course covering both first, with trade-specific depth after.
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Mometrix · SponsoredContractor License Online Study CourseFull online prep course covering the trade and business-and-law exams — video lessons, practice questions, and a study plan built for a first-try pass.See the course →
Mometrix · SponsoredContractor's Exam FlashcardsPortable flashcards for the high-frequency exam topics — a cheaper add-on for drilling terms and code references on the go.See the flashcards →Set up the business before you apply in Connecticut
Most states license the company as well as the person, so the application usually asks for an LLC or corporation and a registered agent in Connecticut. Northwest forms the entity and acts as your registered agent — a flat fee, no upsell funnel.
Some links below are affiliate links. If you buy through them we may earn a commission at no extra cost to you.
Form an LLC with Northwest→Notes
- S-1 contractor exam fee is $130 ($65 trade exam + $65 Business & Law exam)
You're licensed in Connecticut as an HVAC technician — the next 30 days
Most of the steps below are required before your first paid job; the order is the order the state and its counties will ask for them.
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Form the business and get an EIN.
The Department of Consumer Protection issues the S-1 Unlimited Heating, Piping, and Cooling Contractor; the business that invoices Connecticut customers is a separate decision. A sole proprietorship is the default, an LLC keeps business liability off your personal assets, and either needs an EIN before the first payroll. Settle it before the license number goes on an estimate.
Carry general liability insurance.
Connecticut does not set a general liability minimum for this trade, but most permits and commercial customers ask for proof of GL cover. Workers' compensation is required once you hire employees. Contractor insurance requirements→
Set up quoting, scheduling and invoicing before the first call.
Your first customers will ask for a written estimate and expect to pay by card on site. Most one-truck HVAC technician businesses run that on field-service software; Housecall Pro is the one we link because it is built for this size of company and this link carries 20% off your first 12 months. Start a free trial of Housecall Pro→
Keep the license.
Renewal is every year (expires August 31) at $150. Continuing education: 4 hours every year.
Other licenses in Connecticut
- General Contractor license in Connecticut
Statewide registration, not a license · $220 in fees · DCP
- Electrician license in Connecticut
Statewide license required · $365 in initial government fees · DCP
- Plumber license in Connecticut
Statewide license required · $365 in initial government fees · DCP
- Roofing Contractor license in Connecticut
Statewide registration, not a license · $220 in fees · DCP
Frequently Asked Questions
Do I need an hvac technician license in Connecticut?
Yes, Connecticut requires a statewide hvac technician license through the Department of Consumer Protection.
How much does an hvac technician license cost in Connecticut?
The estimated initial cost is $430, including application, exam, and license fees.
What experience do I need for an hvac technician license in Connecticut?
S-1 Contractor: 2 years as a licensed S-2 journeyperson or equivalent experience. S-2 Journeyperson: completion of registered apprenticeship (8,000 hours OJT + 720 hours classroom instruction) or equivalent experience and training. Education substitute: Accredited HVAC or mechanical program may substitute for a portion of the apprenticeship requirement
What exams are required for an hvac technician license in Connecticut?
You must pass the S-2 Unlimited HVAC Journeyperson Exam and S-1 Unlimited HVAC Contractor Exam (Trade + Business & Law) exams. A passing score of 70% is required. Exams are administered by PSI.
How long does it take to get an hvac technician license in Connecticut?
Processing time is typically 4-8 weeks after submitting a complete application.
Is continuing education required for hvac technicians in Connecticut?
Yes, 4 hours per 1 year is required for license renewal.
Next steps
You know the requirements for hvac technicians in Connecticut— here's how to actually pass and apply.
Data last verified: 2026-04-02 | Source: DCP