- Describe the four stages of the basic refrigeration cycle and the state of refrigerant at each point
- Explain the three methods of heat transfer and identify real-world HVAC examples of each
- Define sensible heat, latent heat, and the relationship between BTU capacity and system sizing
- Read and interpret pressure-temperature charts for common refrigerants
- Apply Ohm's law and the power formula to calculate voltage, current, resistance, and wattage in HVAC circuits
- Identify the function of capacitors, contactors, relays, and transformers in HVAC equipment
- Interpret standard thermostat wiring designations (R, Y, G, W, C, O/B)
- Troubleshoot common electrical faults using multimeter readings
Ready to test your knowledge?
Take the practice exam to see how well you've mastered the material.
Ready to test your knowledge?
Take the practice exam to see how well you've mastered the material.
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