HVAC Training in Connecticut
Federal law requires anyone using refrigerants to be EPA Certified.
Technicians must hold one of the following licenses.
- Apprentice
- D-2 HVACR Journeyperson
- S-4 Limited HVAC & Piping Journeyperson
- S-2 Unlimited HVAC & Piping Journeyperson
Apprentice applicants Contact:
Connecticut Department of Labor
Office of Apprenticeship Training
200 Folly Brook Blvd. Wethersfield, CT. 06109-1114
Telephone: (860) 860-263-6085, Fax: (860) 263-6088
http://www.ctapprenticeship.com
If you have any questions to get registered, or to request a registration packet sent by Mail, please contact the office of Apprenticeship Training at (860) 263-6085 or e-mail: ct.apprenticeship@po.state.ct.us.
If requesting a packet by email, be sure to include your name, phone number, address and zip code
Journeyperson applicants should contact PSI to obtain an application for approval to take the exam.
Experience requirement is completion of a registered apprenticeship program or equivalent experience. PSI Examination Service (800) 733-9267 www.psiexams.com http://candidate.psiexams.com/bulletin/display_bulletin.jsp?ro=yes&actionname=83&bulletinid=59&bulletinurl=.pdf
Each exam is $52. Trade exam only. See application for study materials
HVAC Contractor License
- D-3 Limited HVAC Contractor
- D-1 Limited HVACR Contractor
- S-3 Limited HVAC & Piping Contractor
- S-1 Unlimited HVAC & Piping Contractor
Contractor applicants should contact PSI to obtain an application for approval to take the exam. See link above. Two (2) years as a properly licensed journeyperson or equivalent experience is required. Contractors must pass a trade exam and a business exam.
This examination is OPEN BOOK.
Contractors Guide to Business, Law and Project Management, Connecticut, 4th Edition, National
Association of State Contractors Licensing Agencies (NASCLA), Post Office Box 14941, Scottsdale, AZ 85267,
(623) 587-9519, Fax (623) 587-9625, www.nascla.org
See the application for a list of technical reference study material.

