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. You must submit this completed application to TDLR before scheduling your Texas examination. APPLICATION FEE: 30 (FEE IS NON-REFUNDABLE) RESIDENTIAL APPLIANCE INSTALLER LICENSE APPLICATION. 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. YOU MUST MEET ALL REQUIREMENTS WITHIN 12 MONTHS OF THE FILING DATE, OR THE APPLICATION WILL BE TERMINATED. After you have been approved to schedule your exam, contact PSI at 1-80Ĭlass A examinations have 120 question while Class B exams have 100 questions.Ĭlass A examinations have 240 min time limit while Class B exams have 180 min time limit Pre-approval is required to sit for the examination.
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