
BluRoX – our innovative vacuum perlite technology
Welcome to the future of refrigeration and freezing technology. Our pioneering BluRoX technology combines finely ground volcanic rock (perlite) with vacuum insulation. This enables long-lasting energy efficiency as well as a significant increase in the freezing volume with the same exterior dimensions. Unlike conventional insulation, our patented BluRoX technology provides low thermal conductivity, which significantly reduces energy consumption and gives a new outlook on sustainable fridges and freezers.
With the aim of developing a circular economy, BluRoX technology creates the foundation for a product concept that makes repairs easier and takes into account the reuse of components. This means that, as early as the product development stage, the conditions are created for longer use and for materials to remain in the circular economy.

The outer housing is made of galvanised steel, painted white on the outside. Along with the interior, the material ensures the appliance has a stable structure, is a good base for the white paint, and acts as a contact surface for the magnets in the door seal.

The outer housing is made of galvanised steel, painted white on the outside. Along with the interior, the material ensures the appliance has a stable structure, is a good base for the white paint, and acts as a contact surface for the magnets in the door seal.
Ten years of development: get to know some of the people behind the revolutionary freezer in our FNXa 522i video.

FNXa 522i – the first Cradle to Cradle Certified® freezer
Made from volcanic rock and having been developed over the course of a decade, the FNXa 522i brings together all of the benefits of our BluRoX technology. Through the unique combination of vacuum insulation and perlite, the FNXa 522i achieves the highest energy efficiency class A and offers 30 percent more storage space compared to traditional freezers with identical exterior dimensions. In addition, the refrigeration module in the base makes maintenance easy. Thanks to its circular product design, all of the components in the FNXa 522i can be reused, which has earnt it Cradle to Cradle Certified® Bronze status. Our freezer is designed for environmentally conscious consumers and points the way to a future that is not linear, but cyclical.

Exterior dimensions: height/width/depth - 186.5 / 59.7 / 67.5 cm
186.5 / 59.7 / 67.5 cm
Total volume - 359 l
359 l

Made in Germany
Our superior products offer premium quality, cutting edge design, and innovative features that best fit your lifestyle. The use of high quality materials, perfectly detailed finishes, and elite cooling components are combined with the latest production processes, resulting in an outstanding cooling product.
| Scope 1: | |
| Direct greenhouse gas emissions generated locally by the activities that an organisation owns or controls. | 1,428t CO2 eq. |
Scope 2: | |
| Indirect greenhouse gas emissions resulting from purchased energy. | 0t CO2 eq. |
| Total annual withdrawal (2022) | 12,319 m³ | Third-party fresh water. |
| Total annual discharge (2022) | 11,683 m³ | Discharge to third-party (without onsite pre-treatment) - only applies to the water use for hygienic purposes (toilets, hand washing) and/or in kitchens. |
| Total annual consumption (2022) | 636 m³ | The water contained in the painting system* is cleaned, evaporated and put back into circulation. Fresh water needs to be added from time to time to compensate the evaporated water - the system operates without wastewater. *The painting system is not part of the production process of all BlueRoX appliances -and will be phased out for all production processes at the complete production facility. |
| Water quantity by use cycle stage of BluRoX appliances | No water consumption in manufacturing-processes of BluRoX appliances. No water consumption in use stage. | |
| Physical risk Ochsenhausen: (Baseline water stress) | medium-high (20-40%) | Reference: AQUEDUCT Water Risk Atlas |
Materials
Materials used in refrigerators and freezers come into contact with food and must therefore meet specific criteria. At Liebherr, we ensure compliance with food safety standards.
We are committed to continuously increasing the proportion of recycled materials in the future.
Where do we stand?
Currently, we are unable to procure sufficient quantities of recycled materials for plastics and glass that meet these requirements. In the case of steel, the recycled content could not be reliably demonstrated by our suppliers.

About EcoVadis
We use EcoVadis to make our progress in the area of corporate responsibility and sustainability measurable. Our focus on a holistic corporate strategy has now been rewarded: being awarded the EcoVadis gold medal and being ranked in the top 3% of all award-winning companies clearly shows that we are tackling environmental, social and ethical challenges.
Do you have any questions or would you like some advice?
Are you looking for a new fridge or freezer? Just tell us what is important to you and we will find the right model to suit your needs. Do you already have one of our fridges or freezers and would like some advice on use and handling? Get in touch with us. We will be happy to assist you.
Service hotline
+971 4 380 9490








