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

To become a licensed limited heating-cooling contractor in the state of Connecticut, you are required to pass an open-book exam. We offer the books, tabs, and a fully online and inclusive educational course to prepare you to sit for the Connecticut Limited Heating-Cooling Journeyperson/Contractor exam. @HomePrep is a National Leader in online education. With over 100,000 satisfied students and a course catalog of over 1,000 classes, we are here to help you - Invest in Yourself.

Connecticut Unlimited Plumbing Contractor/Journeyperson Plumber License (P-1, P-2)
Steps to Success

1. Submit your application to get approved to sit for the exam
2. Purchase Exam Prep and Books
3. Schedule and pass your exams

Exam Review Option Includes:
1 Year of Access
Instructor Support
Highlighting Guides
Practice Exams

Online Exam Review: $149.99



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.

EXPERT INSTRUCTORS

Our training is written by Subject Matter Experts and built by Instructional Designers.

No Pass, No Pay

If you are not able to pass your exam on the SECOND attempt, we will refund your course fee. Conditions do apply.

Flexible & Self Paced

Simply login and out as needed. We track your progress.

Mobile Compatible

Our training is built on HTML5 - so you can take it with on your tablet or smartphone.

Lowest Price

We will beat ANY price by 10% for a similar program.

Requirements to Obtaining your License

Exam Review, Training, 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.

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 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

Continuing Education

None

Applying to Get Your License

Reciprocity Agreement

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

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