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Refrigeration Cycle Explained: AC System Basics for HVAC Technicians

Master the fundamentals of the refrigeration cycle in this comprehensive training video. Every aspect of how an AC system operates is explained in detail, providing essential basics that every HVAC technician needs for proper diagnostics and service. Whether you're new to the field or need a refresher, this video breaks down the core concepts that are critical for technicians working with air conditioning systems daily.

What You’ll Learn:

  • How the compressor works and why it cannot compress liquid
  • The complete refrigeration cycle from start to finish
  • Understanding high-side vs. low-side pressure
  • Sensible heat vs. latent heat explained
  • Superheat and subcooling fundamentals
  • The four main components: compressor, condenser, metering device (TXV), and evaporator
  • Common diagnostic issues and troubleshooting tips
  • Proper static pressure testing and manometer zeroing techniques
  • Charging systems during high heat load conditions
  • Why airflow checks should come before refrigerant charge

 

Key Topics Covered:

  • Vapor compression cycle mechanics
  • Heat rejection and heat absorption processes
  • Temperature splits during high humidity conditions
  • Using Measure Quick for accurate readings
  • Startup procedures and return visit best practices
  • Trust your senses: visual and audible diagnostics

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