What are the common types of compressors used in HVAC systems?

The common types of compressors used in HVAC systems include reciprocating, scroll, rotary, and centrifugal compressors. These types are specifically designed to cater to the diverse needs of heating, ventilation, and air conditioning applications.

Reciprocating compressors, which work by employing pistons to compress the refrigerant, are widely recognized for their reliability and efficiency in smaller systems. Scroll compressors have gained popularity due to their compact size and quiet operation; they use two spiral-shaped scrolls to compress the refrigerant in a more efficient manner, often found in residential air conditioning units.

Rotary compressors, characterized by their use of rotating mechanisms, can either be of the rotary vane or rotary screw types. These are favored in applications requiring continuous operation and moderate cooling loads. Lastly, centrifugal compressors employ a rotating impeller to impart velocity to the refrigerant, converting it to pressure, and are commonly used in large commercial chillers and cooling towers.

This array of compressor types reflects their adaptability and effectiveness across various HVAC applications, making these four the most prevalent choices in the industry.