Texas Air Conditioning and Refrigeration License (Class A, B)
        |
Requirements to Obtaining your License
Applicants must be at least 18 years old and have at least 36 months of practical experience with the tools of the trade in the preceding five years.
Class A licenses must provided liability insurance in the amount of $300,000 and $600,000 for aggregate.
Class B licenses must provided liability insurance in the amount of $100,000 and $200,000 for aggregate.
An air conditioning and refrigeration contractor license must be endorsed with one or both of the following endorsements:
- An environmental air conditioning endorsement; or
- A commercial refrigeration and process cooling or heating endorsement.
Work that can be Done Under this License
A Class A license entitles the license holder to engage in each type of air conditioning and refrigeration contracting that is endorsed on the license in relation to a system, a product, or equipment of any size or capacity.
A Class B license entitles the license holder to engage in each type of air conditioning and refrigeration contracting that is endorsed on the license in relation to a system, a product, or equipment of not more than:
- 25 tons cooling capacity; or
- 1.5 million British thermal units per hour output heating capacity.
An environmental air conditioning endorsement entitles the license holder to engage in air conditioning and refrigeration contracting for environmental air conditioning within the class of license held.
A commercial refrigeration and process cooling or heating endorsement entitles the license holder to engage in air conditioning and refrigeration contracting for commercial refrigeration and process cooling or heating within the class of license held
Exam Details
Pre-approval is required to sit for the examination. After you have been approved to schedule your exam, contact PSI at 1-800-733-9267.
- Class A examinations have 120 question while Class B exams have 100 questions.
- All exams have a time limit of 3 hours.
- A 70% is required to pass.
Topics on the commercial refrigeration exams include absorption systems, basic refrigeration components, boilers, business and law, combustion air, controls, design and responsibility, equipment requirements, heat loads, HVAC systems, piping, pressure relief protection, refrigeration principles, service, testing, ventilation, and venting.
Topics on the environmental air exams include basic refrigeration components, boilers, business and law, combustion air, controls, design and responsibility, equipment requirements, heat loads, HVAC systems, piping, pressure relief protection, refrigeration principles, service, testing, ventilation, venting, air properties, air distribution, and exhaust.
Books and References for the Exam
The following references are recommended to study for the examination. They are available for purchase from our online contractor’s bookstore or by calling our office at 1-800-952-0910.
- 2009 International Mechanical Code
- 2009 International Fuel Gas Code
- Modern Refrigeration and Air Conditioning
- Pipefitters Handbook
- High Pressure Boilers
- Low Pressure Boilers
- OSHA Part 1926
- ACCA Ductulator (Environmental Air Exam Only)
The following references can be printed online free of charge.
- Texas Occupations Code Chapter 51
- Texas Administrative Code Chapter 60
- Texas Occupations Code, Chapter 1302
- Texas Administrative Code, Chapter 75
- Texas Boiler Law, Health and Safety Code, Chapter 755
- Texas Workers Compensation Act and Rules
- Texas Unemployment Compensation Act and Rules
- IRS Circular E: Employer's Tax Guide
Exam Review, Training, Education
As of this time, we do not offer a study guide or seminar to help prepare for the exam. However, we do stock all of the references that can be used during the exam and we offer code book practice tests online.
