The California Refrigeration (C-38) contractor license allows you to work on refrigerators, refrigerated rooms, and insulated refrigerated spaces, temperature insulation, air-conditioning units, ducts, blowers, registers, humidity and thermostatic controls for the control of air, liquid, and/or gas temperatures below fifty degrees Fahrenheit (50 ), or ten degrees Celsius (10 ).
The CSLB will either issue your license or contact you if they need further information.
Login credentials emailed upon enrollment
Unlimited access (no time limits)
Lecture videos
Practice questions
Key concepts
Step-by-step solutions to math problems
Live review
classesLogin credentials emailed upon enrollment
Unlimited access (no time limits)
Lecture videos
Practice questions
Key concepts
Step-by-step solutions to math problems
Live review
classesBelow are the specifications (test type, academic content, etc.) for each exam needed to get the Refrigeration (C-38) contractor's license in California.
The book set includes all source references for the California Refrigeration (C-38) Contractor exams. You can use these books to study for the exams but you are not allowed to bring these books in with you to the testing center. These tests will be closed-book. Orders placed before 2 PM are shipped the same day via UPS and a tracking number is emailed before 3 PM.
California Electrical Code
California Mechanical Code
California Health and Safety Code
You can print sections or the entirety of
Fundamentals of HVACR
Fundamentals of HVACR is built to teach yo
Modern Refrigeration and Air Conditioning
Refrigeration & Air Conditioning Technology
State of California General Industry & Electr
State of California Construction & Electrical
California Contractors License Law and Refere
California Employer’s Guide (DE 44)
California Labor Code
NASCLA Contractors Guide to Business Law and
Greenbook: Standard Specifications for Public
IRS Circular E
State of California General Industry & Electr
State of California Construction & Electrical