AMChill by KGM: Ultra-Low Charge Ammonia Chiller for Sustainable Cooling

Future-Proof Cooling with Natural Refrigerants

KGM Refrigeration proudly introduces AMChill — a compact, high-efficiency ammonia chiller designed for industrial and commercial applications where sustainability, safety, and performance matter most. Built around ultra-low charge NH₃ technology, AMChill delivers powerful cooling with minimal environmental impact, making it ideal for sectors facing increasing pressure from F-gas regulations and carbon reduction targets.

Compact Design, Powerful Performance

AMChill is engineered for plug-and-play installation, with a footprint of just 1 m × 1.6 m × 1.9 m — small enough to be lifted into place without cranes. Despite its compact size, it delivers cooling capacities from 100 kW to 150 kW, with chilled water outlet temperatures as low as +6 °C. The system is optimized for BITZER W-series open-drive compressors, ensuring reliable operation and long service life.

Ultra-Low Ammonia Charge

At the heart of AMChill is a revolutionary low-charge ammonia circuit, using approximately 0.1 kg/kW of refrigerant — up to 75% less than traditional flooded systems. This drastically reduces risk, simplifies compliance, and eliminates the need for plant room ventilation. AMChill is a future-proof solution for facilities seeking to transition away from synthetic refrigerants like R-404A or R-134a.

Liquid Injection & Thermal Stability

AMChill incorporates liquid injection cooling to manage discharge temperatures and maintain compressor integrity under high thermal loads. This feature enables stable operation even in demanding conditions, such as pharma pilot plants, chemical processing, and machine tool cooling, where precise temperature control is critical.

Safety & Compliance Built In

Each AMChill unit includes:

• ATEX-rated ammonia leak detection

• Automatic system shutdown

• Ventilated enclosure fan

• Stainless steel frame and panels

These features ensure compliance with safety standards while maintaining ease of access for service and maintenance.

Proven in the Field

AMChill has already been deployed in pharmaceutical pilot projects, plastics manufacturing, and cold storage facilities, where it has demonstrated exceptional reliability, energy efficiency, and environmental performance. Its modular design makes it ideal for retrofits, expansions, or new builds where space and sustainability are key