[LOUISIANA (LA) 7-20 Heat, Air Conditioning, Ventilation, Duct Work, and Refrigeration Exam Success Course] The Louisiana (LA) 7-20 Heat, Air Conditioning, Ventilation, Duct Work, and Refrigeration Practice Course provides comprehensive training for HVACR professionals. The course covers the principles of heating, cooling, and ventilation systems, including ductwork design, installation, and maintenance. Participants will gain hands-on experience with refrigeration systems, air handling units, and HVACR troubleshooting techniques. This course is ideal for technicians and contractors seeking to enhance their skills in HVACR system installation and repair, ensuring efficient and reliable climate control solutions.