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State Requirements

HVAC License Requirements
in Connecticut

Everything you need to know about HVAC licensing in Connecticut — from required certifications and exams to experience thresholds and application steps.

License RequiredEPA 608 RequiredCE: 10 hrs

Key Takeaways

Connecticut requires a state HVAC license, but a federal EPA Section 608 certification is mandatory for anyone handling refrigerants. Licensing typically requires up to 6 years of documented experience.

  • State license: Required
  • EPA 608 certification: Required (federal)
  • 2 license types available
  • Continuing education: 10 hours
  • Regulated by: Connecticut Department of Consumer Protection
License Types
Connecticut HVAC Licenses
Connecticut offers 2 license types for HVAC professionals. Review the requirements for each below.
HVAC Journeyman License (S-1/S-2)
Required for HVAC technicians performing installations.
Experience: 4 yearsExam required: Yes
Complete a registered apprenticeship or equivalent training
Pass the state journeyman exam
HVAC Contractor License (S-1/SM-1)
Required to operate an HVAC contracting business.
Experience: 6 yearsExam required: Yes
Hold a valid journeyman license
Pass the contractor business exam
Provide proof of insurance and bonding
Regulatory Authority
Regulatory Body
Connecticut Department of Consumer Protection
Visit Official Website →
Additional Notes
Connecticut requires HVAC technicians and contractors to be licensed. Both warm-air (S-1) and hydronic (S-2) classifications are available.
Data source: Licensing requirements sourced from official state regulatory body publications and verified against ACCA (Air Conditioning Contractors of America) state licensing guides. EPA Section 608 requirements per 40 CFR Part 82. Last verified: June 2026. Licensing rules change — always confirm requirements directly with Connecticut Department of Consumer Protection before applying.
Related
Connecticut Salary Data →Connecticut HVAC Programs →Connecticut Apprenticeships →
Next Step
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Connecticut.
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