Semi-hermetic reciprocating
Bolted construction that can be opened for service. Common on parallel racks and larger condensing units.

Compressors
Commercial refrigeration uses a few compressor families. The type, the refrigerant and the electrical supply narrow the choice quickly.
Bolted construction that can be opened for service. Common on parallel racks and larger condensing units.
Sealed and compact. Common in smaller condensing units and self-contained equipment.
Few moving parts and smooth running. Widely used in condensing units and rack systems.
Rotary compressors for the largest loads, such as process refrigeration and industrial cold storage.
Confirm why the old compressor failed. Electrical faults, flooding and overheating can take out a replacement too, so the system should be checked before the new one goes in.

Make, model, refrigerant, voltage and what the compressor serves. A clear photo of the nameplate is the fastest start.