The Plumbing-Heating-Cooling Contractors-National Association Educational Foundation releases its HVACR 401: Heat Pumps textbook. This book is designed for a more experienced apprentice or journeyman who seeks to learn more detail on the operation of heat pumps. The book emphasizes the service technician’s perspective; topics include electrical schematics, scheduled maintenance, geothermal heat pumps and troubleshooting problems.www.informationdestination.cengage.com/hvacr.
