Refrigeration Cycle of Air Conditioners and Heat Pumps

  • Author: Craig Migliaccio
  • Level: Beginner
  • Study time: 1+ hours
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This course teaches about the refrigeration cycle using refrigerant temperature examples at each step. Component functions are explained. Refrigerant states such as vapor, liquid and saturation are shown, phase change liquid and vapor percentages are displayed as the refrigerant flows through the coils, and subcooling, superheat, and total superheat are discussed with examples. Examples of tools and measuring the refrigerant charge is also shown.
  • Video time: 1+ hours
  • Knowledge Checks: 16
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Measuring HVAC Indoor Airflow

This course provides HVAC students with the essential knowledge and practical skills needed to measure and then properly adjust blower motor airflow speed in residential and light commercial HVAC systems. 

"Understanding the refrigeration cycle is the key to solving problems related to heat pumps and air conditioners. If you don't understand what's happening with the refrigerant, you won't know how to properly fix it even when the issue is related to the airflow or electrical."

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