Obtain Your License

Pursuing a career in the HVAC field? Study at home for your Connecticut HVAC license exam with our fully online, user-friendly, and self-paced course.

  • Connecticut Limited Heating Cooling License (D-3 and D-4)

    $164.99

    Pre-approval is required. Journeyperson applicants must attach the original copy of the Letter of Apprenticeship Completion Certificate. Contractors are required to document 2 years of experience. We offer review for the Connecticut Limited Heating-Cooling exam through online exam review. The program takes you through each one of the reference books that the exam is based on showing you exactly what to highlight. After your highlighting is completed with each book, you have the option take an online practice test to reinforce concepts presented. Also, there is …

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Requirements To Complete

About This License

D-3 Contractor

The holder of this license may perform the installation, repair, replacement, maintenance or alteration of all refrigeration systems included in food storage, air conditioning, or special process systems. The requirements to qualify for this license examination shall be two (2) years as a properly licensed journeyperson or equivalent experience and training.

D-4 Journeyperson

The holder of this license may perform the installation, repair, replacement, maintenance or alteration of all refrigeration systems included in food storage, air conditioning, or special process systems, and only while in the employ of a contractor licensed for such work. The requirements to qualify for this license examination shall be the completion of a registered apprenticeship program or equivalent experience and training.

Requirements to Obtaining Your License

Applying For Your License

Exam Details

  • Topics include Refrigeration and Refrigerants, Components, Controls, Valves and Wiring, Piping and Tubing, Tests, Inspection and Maintenance, and Safety.
  • To schedule your exam, contact PSI at 1-800-733-9267.
  • $65 for 1 portion or $130 for both the trade and the business and law

D-3 Contractor Exam

  • 50 questions
  • 2 hours
  • 70% required to pass

D-4 Journeyperson Exam

  • 40 questions
  • 1.5 hours
  • 70% required to pass

Books and References for the Exam

The following references are permitted to be taken into the examination. They are available for purchase from our online contractor’s bookstore or by calling our office at 1-800-952-0910.

  • 2015 International Mechanical Code
  • OSHA 1926
  • Modern Refrigeration and Air Conditioning

Exam Review Education

We offer review for the Connecticut Limited Heating-Cooling exam through online exam review. The program takes you through each one of the reference books that the exam is based on showing you exactly what to highlight. After your highlighting is completed with each book, you have the option take an online practice test to reinforce concepts presented. Also, there is an extensive math and plans analysis portion. The program narrated and animated.

Continuing Education

None

Reciprocity Agreement

There are no reciprocal agreements for this license as of this time.

How It Works

1

Obtain pre-approval from the state (if applicable).

2

Purchase Exam Prep materials.

3

Schedule and pass your state exams.

4

Submit to the state your application, licensing fee, and proof of insurance.