HVAC Contractor License in Connecticut: Requirements, Qualifier, Bond and Exams

Statewide.

Connecticut licenses heating, piping and cooling work through the Department of Consumer Protection (DCP), whose Heating, Piping, Cooling and Sheet Metal Work Examining Board lists paired contractor and journeyperson classes.

The contractor license itself — S-1, D-1, D-3, B-1/B-3 and the rest — is held by an individual, not by the company, and journeyperson licensees must work in the employ of a contractor licensed for the work.

In other words, the contracting credential is a person's license.

How that maps onto an LLC or corporation is not described in the pages we read, so confirm your business structure with DCP.

DCP issues the licenses through the Heating, Piping, Cooling and Sheet Metal Work Examining Board.

The classes are paired: S-1/S-2 is the unlimited heating, piping and cooling pair — the S-2 journeyperson license covers all heating, piping and cooling work as defined in CGS §20-330, including sheet metal — and the limited pairs cover narrower scopes.

D-1/D-2 is warm air, air conditioning and refrigeration (the D-2 journeyperson license does not include the installation or servicing of oil burners of any size), D-3/D-4 is limited cooling, B-1 to B-4 covers gas and oil burner work, and S-3/S-4, S-9/S-10 and G-1/G-2 round out the list.

Match the class to the work your business actually contracts for, and confirm the scope of each class with DCP before you apply.

The qualifier question has a short answer here: the contractor license is the individual's own trade license, and the person who holds it is the credential your business stands on.

To qualify for the S-1 examination you need two years as a properly licensed journeyperson, or equivalent experience and training.

Under that sits the journeyperson rung itself: a completed Connecticut Department of Labor registered apprenticeship, or the equivalent-experience route — for the S-2, documented proof of 576 classroom hours and 8,000 hours of on-the-job training, with CE and manufacturer certificates not counting as classroom hours.

You can check whether an individual holds a Connecticut license on DCP's eLicense lookup.

Every individual applicant for a Connecticut trade license must pass an exam, and exam fees are separate from DCP's application fee — they are due to the exam vendor when you register.

Your S-1 exam eligibility comes from the two-year journeyperson requirement above.

Beyond that, our research does not confirm which vendor administers the heating, piping and cooling exams, or whether Connecticut's contractor exam includes a business-and-law component.

Ask DCP for the current exam outline, vendor and booking process before you schedule.

Our research did not verify bond or insurance minimums for Connecticut heating, piping, cooling and sheet metal contractors: reading the DCP licensing pages did not turn up a surety bond amount or a liability insurance minimum for these licenses.

That is an absence in our reading, not a DCP statement that none is required.

Before you bid, ask DCP what bond and insurance, if any, your license class carries, and check whether the towns you work in require proof of insurance for permits.

DCP's application fee is $150 at the contractor level and $90 at the journeyperson level, and every applicant pays the exam vendor separately.

One caveat on the application fees: the research confirmed the $90 journeyperson figure on the heating license page, while the $150 contractor figure appears on DCP's parallel plumbing licensing page, so confirm the heating contractor application fee with DCP when you apply.

Renewal is simpler: every heating, cooling and sheet metal license expires annually on August 31, and renewal costs $150 for a contractor and $120 for a journeyperson.

Continuing education for heating, piping, cooling and sheet metal licensees is not confirmed in our research — ask DCP before you renew.

Our research did not verify any reciprocity agreement covering Connecticut heating, piping and cooling contractors — we found no named partner states and no documented waiver of Connecticut's exam or experience requirements.

What we did see is narrower: DCP's licensing materials mention licensure by an equivalent out-of-state license.

Whether that route waives Connecticut's exam or experience requirement, and for which out-of-state licenses, our research does not establish.

If you hold a contractor or journeyperson license in another state, ask DCP what it accepts before you plan work around it.

In Connecticut the question becomes what happens when your licensed individual leaves, because the contractor license is held by the individual, not the company.

Our research did not find a DCP rule for replacing a departing licensee or for how long a business may keep contracting without one, so we cannot quote a notification deadline or grace period.

The constraint the research does establish sits on the crew: journeyperson licensees must work in the employ of a contractor licensed for the work.

What that rule means while a business is between licensees — whether the crew can keep working, and for how long — is not covered by our research; ask DCP.

Ask how to keep the business's contracting continuous before a departure, not after.