Licensing Exams by Trade Name

Connecticut
(D-1) Limited Warm Air, Air Conditioning & Refrigeration System Contractor

Apply for the License
Connecticut DCP
Heating, Cooling & Sheet Metal Licensing Unit
450 Columbus Blvd, Suite 801
Hartford, CT  06103
(860) 713-6135
Licensing Agency Site
Exam Provider
PSI Services LLC
3210 E. Tropicana
Las Vegas, NV  89121
Phone:  (855) 746-8171
Connecticut Occupational Trades Site
Exam Type
OPEN  BOOK
Exam Content
Subject Areas# of
Questions
Insulation1
Hangers & Supports2
Sound, Vibration & Seismic Control1
Heating & Cooling Principles5
Refrigerants & Refrigeration8
Testing, Adjusting & Balancing2
Controls5
Machine Room1
A/C & Heat Pump Equipment5
Furnaces & Heaters4
Chimneys, Flues & Vents2
Combustion Air2
Fuel Gas Systems10
Ducts6
Chillers3
Ventilation & Exhausts3
Safety4
Load Calculations6
Total number of test questions:
70
Time allowed (hours):
3.0

In addition to the trade-specific examination, you are required to pass the Connecticut Business & Law Exam offered by PSI.

Link to Business and Law Study Materials
Books Allowed in the Exam
1.
International Mechanical Code, 2015, 2018 or 2021, ICC
Buy at Amazon
2.
Manual J: Residential Load Calculations, 8th Edition, ver 2.50, 2016 (previouss versions superceded), ACCA
Buy at Amazon
3.
Manual N: Load Calculation for Commercial Summer & Winter Air Conditioning, 5th  Edition, 2012, ACCA
Buy at Amazon
4.
NFPA 54: National Fuel Gas Code [or] National Fuel Gas Code Handbook, 2012, NFPA
Buy at Amazon
5.
CFR Title 29, Part 1926 Selections (OSHA), 2013, PSI
Buy from PSI
6.
Modern Refrigeration and Air Conditioning, 19th, 20th or 21st Edition, Althous, Turnquist, Bowditch, Bracciano
Buy at Amazon
7.
ACCA Ductulator (Duct Slide Rule), 2009, ACCA
Buy at Amazon
8.
HVAC Duct Construction Standards - Metal and Flexible, 3rd Edition, 2005, SMACNA
Buy at Amazon
9.
NFPA 58: Liquefied Petroleum Gas Code, 2014, NFPA
Buy at Amazon
Available Study Materials
This study guide only covers the OSHA portion of the PSI exam.
PSI OSHA Selections, 2013
Study Guide
$49.95
We advise that you NOT purchase the PSI published book shown in the exam bulletin.  We recommend a better, up-to-date allternative on our Study Guides purchase page linked below.

The button below will take you to the details about our 800 question Study Guides and provide you with a FREE "Reference Navigator" document that allows you to more accutately decide which sections of the federal code applies to your exam.  PSI does not provide this information.
Go to OSHA Guide buy page
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May-2025