HVAC Level 3 Trainee Guide, Paperback by NCCER
This exceptionally produced trainee guide features a highly illustrated design, technical hints and tips from industry experts, review questions and a whole lot more! Key content includes: Refrigerants and Oils, Compressors, Metering Devices, Retail Refrigeration Systems, Commercial Hydronic Systems, Steam Systems, Planned Maintenance, Water Treatment, Troubleshooting Electronic Controls, Troubleshooting Oil Heating, Troubleshooting Heat Pumps, and Troubleshooting Accessories.