Offline — reconnect before saving or submitting. Changes on this page have not been sent.
NH₃, CO₂ transcritical and HFC central plants — compressors, condensers, evaporators, receivers and full engine-room packages for processing and cold storage.
ColdMatch facilitates sourcing and RFQs; it does not manufacture, sell, import or export the listed products and is not a regulatory authority. Suppliers are responsible for their products meeting the requirements of the origin and destination countries; buyers for import permissions, local rules and due diligence. Requirements vary by product and country, and the team checks requests before any supplier contact. Regulation and restricted items
General descriptions to help you define your request. Specifications, prices and lead times come only from suppliers’ written offers.
Central engine-room plant using ammonia as refrigerant to serve cold stores, freezers and process cooling from one system.
Refrigeration plant using carbon dioxide as refrigerant, in transcritical or cascade configurations, for commercial and industrial cooling.
Factory-assembled set of compressors with controls, or a condensing unit, serving one or more evaporators.
Which natural refrigerant suits your site, loads and local competence?
| Aspect | Ammonia (NH₃) plant | CO₂ (R744) plant |
|---|---|---|
| Refrigerant | Ammonia: toxic and flammable within certain concentrations; long industrial track record. | Carbon dioxide: non-flammable and low toxicity, but operates at high pressure. |
| Usual fit | Large central plants serving cold stores, freezers and process users. | Commercial and industrial systems, including where ammonia is restricted near occupied areas. |
| Site and safety | Machine-room design, detection, ventilation and emergency planning are central. | High-pressure components and relief design; check performance in hot climates. |
| Competence needed | Qualified ammonia operators and service locally. | Technicians trained on CO₂ systems locally. |
| Combined options | NH₃/CO₂ cascade designs keep ammonia in the machine room. | Can be the low-temperature stage of a cascade with ammonia. |
Rule of thumb: Neither is right everywhere. Local rules, climate, load size and the service skills near your site usually decide.
Read the full CO₂ vs ammonia guidePlanning estimates to make your request specific — not quotes.
This catalog covers sourcing refrigeration plant equipment. If you first need a complete facility sized, laid out and scoped, that is a separate project planning service.
Project planning servicesLinks checked on . They explain rules and practice; they do not confirm that any specific offer complies. Requirements differ by country — check with your own advisers.
Hazards and safety-management requirements for ammonia refrigeration systems in the United States.
Industry body publishing standards and guidance for ammonia and other natural-refrigerant systems.
EU restrictions on certain fluorinated refrigerants by equipment type and date. Use it to check whether the refrigerant offered is restricted for your equipment in the EU.
US limits on higher-GWP HFC refrigerants in new refrigeration and air-conditioning equipment. Parts were under reconsideration in 2026, so check the current status before relying on a date.
No supplier-confirmed listings are published here yet. ColdMatch only publishes details that a supplier has confirmed in writing and our team has reviewed — we do not show estimated stock, prices or specifications.
You can still request quotes now: send your requirement and the ColdMatch team will review it and contact suitable suppliers on your behalf.
Specifications, sizing, capex and comparison tables for refrigeration plant — read before you shortlist suppliers.
Open the engineering guide