Check the listing for details. Refrigerant Charging and Service Procedures for Air Conditioning WORKBOOK. Condition: Brand New. Listed at 34.99 USD. This workbook is a direct compliment to the “Refrigerant Charging and Service Procedures for Air Conditioning” text. Each copy of the book includes a removable answer key for quick reference and use. This workbook follows the text chapter by chapter providing over 1,000 supportive questions and problems to test your understanding of the various procedures, methods, and steps stated in the book. Each chapter contains a variety of question types including multiple choice, fill in the blank, open ended, true/false, and circle the best answer questions. There are several labeling and scenario based questions as well! This workbook can also help readers retain information such as the refrigeration cycle and components used in each system. Custom images are used to display charging scenarios and troubleshooting. Test your knowledge as you solve each problem and question!