Hermetic scroll compressors

Hermetic scroll compressors are positive displacement compressors used in HVAC and refrigeration systems where high efficiency, low vibration, and stable operation are required.

The scroll compression process uses two interleaved spiral elements to compress refrigerant in a continuous motion. This provides:

Smooth, low-pulsation compression
Fewer moving parts
Stable part-load performance
Suitability for modulating refrigeration systems

For refrigeration applications, MLZ and LLZ are the primary scroll compressor ranges used in commercial cooling systems.

Features and benefits

Continuous compression with low vibration
High seasonal efficiency
Suitable for rack and distributed systems
Vapor injection capability on selected LLZ applications
Compact compressor footprint
Broad refrigerant compatibility

Product types shown: 5

HLP
HLP compressors stand out for versatile operation and robust design. Danfoss efficiency and reliability in all refrigeration applications.
HRP
HRP compressors are engineered for precision and reliability. Danfoss quality delivers efficient cooling for critical processes.
MLZ
MLZ compressors provide sustainable efficiency with compact design. Danfoss solutions for modern refrigeration and low-maintenance systems.
SH
SH compressors deliver superior reliability and efficiency. Danfoss guarantees quiet, consistent cooling in small footprint units.
SZ
SZ compressors R513a provide silent operation and steady cooling. Danfoss technological excellence ensures minimal maintenance.

Cold Rooms

Hermetic scroll compressors are used in commercial refrigeration systems requiring efficient and reliable refrigerant compression.

For refrigeration applications:

MLZ – medium-temperature refrigeration
LLZ – low-temperature refrigeration

Selection is primarily based on evaporating temperature, compression ratio, system architecture, and vapor injection requirements.