Connecticut HVAC License Requirements
Your complete guide to HVAC licensing in Connecticut, including who needs a license, what it costs, and how to apply.
Connecticut HVAC License Summary
- Last updated: August 6, 2026
- Written by: James R. Leichter
- Reviewed by: Aptora Staff
License Types in Connecticut
S-1 Unlimited Heating, Piping, and Cooling Contractor
Covers all heating, piping, and cooling work without system size restrictions. Required for business owners who plan to bid on projects and employ technicians.
S-2 Unlimited Heating, Piping, and Cooling Journeyperson
Covers the installation, alteration, and repair of all heating, piping, and cooling systems. Allows the holder to perform hands-on work only as an employee of a contractor.
D-1 Limited Warm Air, Air Conditioning, and Refrigeration Contractor
Covers specialized warm air heating, air conditioning, and refrigeration systems. Required for business owners seeking to perform light commercial and residential cooling.
D-2 Limited Warm Air, Air Conditioning, and Refrigeration Journeyperson
Covers warm air heating, refrigeration, and cooling work under supervision. Allows the holder to execute physical tasks on air conditioning systems as a licensed employee.
B-1 Limited Gas and Oil Burner Contractor
Covers the installation, service, and repair of gas and oil burners. Required for independent contractors focusing entirely on combustion burners and related equipment.
B-2 Limited Gas and Oil Burner Journeyperson
Covers installation and service of gas or oil burners for domestic and light commercial work. Allows the technician to work as an employee under a licensed contractor.
Requirements Overview
Requirements may vary by license type
- Complete required training and experience
- Hold journeyperson license, if applicable
- Submit license application
- Disclose relevant criminal convictions
- Pass required licensing exams
- Pay application and license fees
- Obtain EPA 608, if applicable
Cost & Timeline Overview
Cost and timeline may vary by license type
$850 - $2,200
Estimated Cost Estimated upfront licensing costs
6 - 8 weeks
Estimated Timeline Typical time to complete licensing
Every Year
Renewal Cycle How often renewal is required
0 Hours
Continued Education Ongoing education to maintain licensure
Average Salary & Wages for HVAC Tech in Connecticut
Based on the latest data from the U.S. Bureau of Labor Statistics and industry reports.
$76,610
Avg. Annual Salary Average yearly earnings for an HVAC technician
$100,160+
Top Earners' Salary Potential earnings for the top 10% of HVAC techs in the field
520+
Job Openings / Year Current HVAC hiring demand based on active job listings
HVAC Technician Salary by Experience
Top HVAC Training Programs & Schools
Lincoln Technical Institute
East Windsor, CT
Porter and Chester Institute
Hamden, CT
ENTECH Advanced Energy Training
Cromwell, CT
Industrial Management & Training Institute
Waterbury, CT
Construction Education Center
Plainville, CT
Bristol Technical Education Center
Bristol, CT
UA Local 777 Plumbers & Pipefitters JATC
Meriden, CT
Associated Builders and Contractors of Connecticut
Rocky Hill, CT
CT State Community College Middlesex
Middletown, CT
SkillCat Online Trade School
Online
Reciprocity
Out-of-State Reciprocity
Connecticut has no blanket reciprocity. Out-of-state licenses are reviewed case-by-case by the DCP for equivalent hours, and applicants must usually pass the state exam.
Local Permits & Rules
Cities and counties may have additional permit requirements.
Common Mistakes
- Missing the annual August 31st renewal deadline
- Forgetting required residential HIC registration
- Applying for the incorrect license tier classification
- Letting business liability insurance coverage lapse
