Heat Pump

This chapter explains the fundamentals of Heat Pumps — highly efficient HVAC systems that provide both heating and cooling by transferring heat rather than generating it. Heat pumps work by moving thermal energy between indoor and outdoor environments, using a refrigeration cycle similar to air conditioners but reversible.

Key topics include:

• How heat pumps operate in cooling and heating modes

• Major system components (compressor, coils, reversing valve, expansion device)

• Types of heat pumps (air-source, water-source, ground-source)

• Typical applications in residential, commercial, and multi-zone setups

• Benefits in energy efficiency and electrification efforts

• Cold weather performance considerations

This chapter is ideal for HVAC technicians, project managers, and facility maintenance teams looking to understand how heat pumps contribute to modern building comfort and energy strategies. Includes diagrams, example systems, common troubleshooting issues, and links to manufacturer training resources.