4Master the electrical principles and practices you need to succeed as a professional installation and service technician with this trusted guide. Accurate and easy-to-understand, ELECTRICITY FOR REFRIGERATION, HEATING AND AIR CONDITIONING, Eleventh Edition, will give you a strong foundation in essential electrical theory--and help you hone real-world skills and techniques you can apply on the job. Thoroughly updated for today�s professionals, the Eleventh Edition includes up-to-date information based on current trends, technology and industry practices--including key diagnosis and troubleshooting methods--making this an ideal resource whether you�re new to the field or a current practitioner ready to update your knowledge and skills. Available with this text is The Complete HVAC Lab Manual, which features over 250 lab exercises covering 15 topic areas. See the supplements section for more details.