CO₂ (R744) · all of Poland
CO₂ refrigeration systems: design, installation and service
We design, install, commission and service CO₂ (R744) refrigeration systems throughout Poland, mainly in large-format stores and industry. CO₂ is a natural refrigerant with a GWP of 1 and safety class A1 (non-flammable, low toxicity). That is why it is not affected by the restrictions of F-gas Regulation (EU) 2024/573, which phase out high-GWP HFC refrigerants.
- GWP 1natural refrigerant R744
- A1non-flammable, low toxicity
- Polanddesign and installation nationwide
- 24/7service with a contract
What we do on CO₂ systems
The full scope: from the heat load calculation to servicing the system for years.
Design and heat load calculation
Selection of the compressor rack, evaporators and gas coolers, and detailed design documentation.
Installation
High-pressure systems, with pipes and fittings suitable for CO₂.
Commissioning and adjustment
Pressure tests, charging, site-specific settings, report.
Replacing HFC with CO₂
Replacing an HFC system in stages, keeping the site running.
Heat recovery
Heat from the system for space heating or domestic hot water.
Service and contracts
F-gas leak checks, system monitoring, service contract with 24/7 on-call service.
Refrigerant comparison
CO₂ or HFC: refrigerant comparison
GWP is the global warming potential (CO₂ = 1). The higher it is, the stricter the limits under the F-gas Regulation 2024/573. Class A1 means a non-flammable refrigerant with low toxicity, A3 a flammable one.
| Refrigerant | GWP | Class | Notes |
|---|---|---|---|
| R744 (CO₂) | 1 | A1 | Natural refrigerant. High pressures, transcritical systems, heat recovery. No F-gas restrictions. |
| R404A | 3922 | A1 | Classic HFC in commercial refrigeration, being phased out by the F-gas Regulation. |
| R448A / R449A | approx. 1400 | A1 | Transitional replacements for R404A, still subject to restrictions. |
| R290 (propane) | 3 | A3 | Natural and efficient but flammable: only small charges, e.g. in plug-in equipment. |
Who we work for
- Large-format storesCentral systems for the store's counters, display cases and cold rooms.
- Plants and processing facilitiesProcess chilling and freezing, heat recovery.
- Warehouses and logistics centresLarge-volume storage cold rooms and freezer rooms.
How it works
Service area
We design and install CO₂ refrigeration systems throughout Poland. Service with a guaranteed response time is agreed in the contract for each site.
Frequently asked questions
24/7 on-call service
Night, weekend and public holiday on-call service is available to companies with a service contract, and in Warsaw also a guaranteed response within 4 hours. Without a contract we take calls Mon-Fri 8:00-18:00.
Want to be sure a Saturday breakdown will not spoil your stock? Call 516 338 012 and we will match the inspection scope and response time to your cold room.
What is a CO₂ refrigeration system?
It is a system that uses carbon dioxide (R744) as the refrigerant instead of HFC refrigerant. It runs at higher pressures, often as a transcritical system, and works well in large-format stores and in industry.
Is CO₂ a safe refrigerant?
Yes. CO₂ has safety class A1: it is non-flammable and has low toxicity. The system runs at high pressure, so it needs suitable materials, safety devices and sensors, which we include in the design.
Why switch from HFC to CO₂?
CO₂ has a GWP of 1, so it is not affected by the bans and HFC availability restrictions of F-gas Regulation (EU) 2024/573. A CO₂ system also lets you recover heat for space heating or hot water.
How much does a CO₂ refrigeration system cost?
The cost depends on the cooling capacity, the number of refrigerated units and the scope of heat recovery. We price every system individually after an audit, and prepare the quote within 48 hours.
Can an HFC system be replaced with CO₂ in a store that stays open?
Yes, usually in stages: we switch over one group of equipment at a time, so the store keeps operating during the works. We agree the schedule in the design.
Do you service CO₂ systems installed by other companies?
Yes, after first inspecting the system and its documentation.
Tell us what you need
We reply within one working day and prepare quotes within 48 hours. In a breakdown, do not write, call us.
ColdBack Sp. z o.o., Jaśminowa 2, 05-462 MajdanOffice: Mon-Fri 8:00-18:00 · 24/7 on-call service