Heating and Cooling Essentials is the ideal introductory book for students entering the HVAC field. The text explains the operation of refrigeration, air conditioning, and heating systems; provides instructions for troubleshooting and servicing HVAC equipment; covers the correct methods of refrigerant handling; and includes information on EPA Technician Certification. Emphasis is placed on techniques needed to properly perform installation, service, and repair.• A full chapter covers techniques for planning and installing ductwork.• Includes information on EPA regulations and “ozone-friendly” refrigerants.• Emphasizes safety, with all safety content printed in red type.• Presents measurements and quantities in US customary and metric units.