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(2.5 CEUs) Central air conditioners and heat pumps rely on the refrigeration cycle to provide heating and cooling. This lesson explains the refrigeration cycle in simple language with clear diagrams. You’ll learn the following.

  • How HVAC refrigeration systems work.
  • Common problems that reduce refrigeration efficiency.
  • How to recognize refrigeration problems.
  • How to specify solutions that restore refrigeration effectiveness and increase efficiency.