Ammonia Compressor Packs (ACP) are industrial packaged refrigeration systems comprising several screw compressors that together form a central refrigeration plant. They use the natural refrigerant ammonia (NH₃, R717) and enable highly energy-efficient industrial cooling.

Thanks to their modular system design, the capacity, redundancy, and system configuration can be adapted to specific application requirements. This increases operational reliability, reduces downtime, and supports flexible operating strategies across different load conditions.

ACPs are typically used in process cooling, food production, cold storage, and air conditioning applications. Compared to single compressors, they offer clear advantages in terms of maintenance, part-load efficiency, system integration, and overall life cycle performance.