Requirements, license levels, and the issuing authority, sourced from Connecticut's official board.
Connecticut splits the credential two ways at once, by tier (contractor versus journeyperson) and by scope (unlimited S-1 and S-2 versus the limited D, B, G, PP and S-series codes), so the correct code depends on the specific equipment and systems worked on. The S-1 and S-2 scope is defined by reference to section 20-330 of the Connecticut General Statutes; D-1 and D-2 cover warm air, air conditioning and refrigeration systems. Federal EPA Section 608 certification applies separately to refrigerant work and does not substitute for the Department license.
| Requirements | Every individual applicant must pass an examination. Journeyperson licenses come from completing a Connecticut Department of Labor apprenticeship, or an equivalent experience and training path, or an equivalent out-of-state license path. The equivalency route requires documented classroom hours plus on-the-job training: S-2 requires 576 classroom hours and 8,000 OJT hours, SM-2 requires 576 and 8,000, and S-10 requires 576 and 6,000. Contractor licenses require at least 2 years as a licensed journeyperson, or the equivalency route, which for S-1 is 576 classroom hours and 12,000 OJT hours. Documentation must be an original completion letter from the Department of Labor Apprenticeship Training Division or dated, notarized employer letters on company letterhead, plus transcripts or certificates for the classroom hours. Classroom hours cannot be substituted with work experience, and continuing education certificates, manufacturer certificates, payroll records and tax returns are not accepted. Application fees are $150 contractor and $90 journeyperson, non-refundable. |
| Reciprocity | The Department states that Connecticut does not have reciprocal agreements with any other jurisdiction. An out-of-state licensee applies instead through the equivalent out-of-state license path, which is evaluated against Connecticut's classroom and on-the-job hour requirements. |
| Renewal | Annually, on August 31. Renewal fees are $150 contractor and $120 journeyperson. The Department's continuing education page lists electrical, plumbing and several other license types but not heating, piping and cooling or sheet metal, and no continuing education requirement for these codes was found on the official pages reviewed. |
| Notes | Connecticut splits the credential two ways at once, by tier (contractor versus journeyperson) and by scope (unlimited S-1 and S-2 versus the limited D, B, G, PP and S-series codes), so the correct code depends on the specific equipment and systems worked on. The S-1 and S-2 scope is defined by reference to section 20-330 of the Connecticut General Statutes; D-1 and D-2 cover warm air, air conditioning and refrigeration systems. Federal EPA Section 608 certification applies separately to refrigerant work and does not substitute for the Department license. |
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Sources: portal.ct.gov, portal.ct.gov. Always confirm current requirements with the issuing authority.
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