Ammonia (NH₃) Refrigeration

Ammonia refrigeration systems — industrial NH₃ plants, packages and conversions

Ammonia (NH₃, R717) is the efficiency benchmark for large industrial refrigeration — zero GWP, zero ODP and 10–20% lower lifecycle energy than HFC. ColdMatch sources single-stage, two-stage and low-charge packaged ammonia plants from specialist OEMs and EPC contractors worldwide.

What ColdMatch delivers

  • Two-stage NH₃ plants for –40 to –45°C evaporating temperatures
  • Low-charge packaged ammonia (under 1 kg NH₃ per kW) for smaller footprints and lighter compliance
  • Screw and reciprocating compressor packages with VSD
  • Ammonia/CO₂ cascade systems for ultra-low temperature and IQF
  • HFC-to-ammonia conversion feasibility studies and turnkey retrofits
  • PSM (Process Safety Management) compliant design and documentation

Frequently asked questions

When is ammonia the right refrigerant?+

Above ~300 kW of refrigeration duty, ammonia typically wins on lifecycle cost. Below that, low-charge packaged NH₃ or CO₂ transcritical often makes more sense than a full engineered plant.

Is ammonia safe in modern plants?+

Yes when properly engineered. Low-charge packages, secondary glycol loops, gas detection and machine-room ventilation bring ammonia risk in line with any industrial refrigerant.

Can ColdMatch help convert my HFC plant to NH₃?+

Yes — we source feasibility studies, engineered retrofit packages and turnkey conversion EPC scope from specialists who have delivered dozens of HFC-to-ammonia projects.

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