Understanding Electrical Circuits

56 Questions

Testing and Measuring Electrical Components

52 Questions

Troubleshooting Electrical Motors

56 Questions

Troubleshooting Electrical Controls

54 Questions

Refrigeration Cycle and Components

51 Questions

Refrigerant Flow and Pressure Analysis

55 Questions

Troubleshooting Refrigerant Leaks

52 Questions

Troubleshooting Compressor Problems

55 Questions

Gas Furnaces and Boilers

51 Questions

Electric Heat Pumps

53 Questions

Hydronic Heating Systems

46 Questions

Ductwork and Airflow Analysis

53 Questions

Air Filters and Indoor Air Quality

52 Questions

Troubleshooting Ventilation Systems

51 Questions

Electrical Safety and Codes

55 Questions

Refrigerant Handling and Environmental Regulations

52 Questions

OSHA Standards for HVAC Technicians

53 Questions