Energy efficiency
Every kilowatt-hour counts
A large amount of energy use in private households is dedicated to refrigeration and freezing: – in Germany it’s around 23 %*. The appliance runs constantly, which makes the energy consumption during its use phase a significant factor for its impact on the environment. That is why we are continuously working to improve the energy efficiency of our products.
* Source: Umweltbundesamt (German federal environment agency), “Energieverbrauch privater Haushalte” (energy consumption of private households), dated 10/2025.
Reducing energy consumption – step by step
With innovative refrigeration and insulation technologies, intelligent control features, and sophisticated product designs, we have consistently improved the energy efficiency of our fridges and freezers across the decades. Today, fridges and freezers from Liebherr use around 80 % less electricity than in 2000.
A specific product comparison of two freestanding Liebherr fridge-freezers with NoFrost (approx. 200 cm in height, approx. 60 cm in width) illustrates this development:
2000: KGN3446 (492 kWh/a)
2024: CBNbsa10 575i (104 kWh/a)
Energy efficiency in the whole range
Efficiency in every detail
In the face of rising energy costs and the challenges of climate change, energy efficiency is a central focus of our product development. Previous progress strengthens our aspiration to consistently achieve the efficiency potential and harmonise it with performance, comfort, functionality, and aesthetics. That is why we question established solutions and look for new possibilities to improve our appliances in every detail. The following examples show how different technologies and features support this goal.
Measures for optimising cooling technology and control systems
Variable Capacity Compressors (VCC) adjust cooling output based on demand, using energy only when needed. This ensures efficient, quiet operation while enabling rapid cooling for features like SuperCool and SuperFrost.
Our microexpansion valves boost energy efficiency and reduce noise by precisely adjusting refrigerant flow. This innovation cuts energy use by up to 12 %, lowers operating costs, and ensures quieter performance — making models such as the FNb 505i and FNa models 6625 and 6635 among the quietest at 33 dB(A).
Adaptive cooling systems, electronic controls, and smart features optimise storage conditions while reducing energy consumption.
Electronic controls and VCC technology regulate cooling cycles and compressor speed for demand-driven energy use.
We use high-performance vacuum insulation panels (VIPs) in many of our appliances. In contrast to many conventional insulation materials, these panels enable higher thermal insulation performance in a small space, which boosts energy efficiency. Our latest innovation, BluRoX technology, combines vacuum insulation with perlite, eliminating the need for polyurethane.
The EnergySaver feature increases the standard temperature slightly, which can reduce power consumption without impacting refrigeration.
HolidayMode optimises energy efficiency during extended absences by setting the fridge to +15°C to prevent odours, while the freezer runs as usual, cutting energy consumption.
VarioTemp offers flexible use of the freezer compartment in fridge-freezer combinations, allowing temperature adjustments from -2 °C to +14 °C. This transforms it into a versatile storage space, whether as an extra cooling zone for drinks, a cellar compartment for temperature-sensitive foods, or additional fridge space when needed.
The relocation of refrigeration components to the appliance plinth has transformed the design and functionality of freestanding appliances. This design creates additional, usable space, enhances energy efficiency, and enables front ventilation for seamless kitchen integration with InteriorFit.
Our BluPerformance appliances combine additional usable volume with lower noise development and energy-efficient operation.
LED lighting is standard in our fridges and freezers. It offers low energy consumption, long service life, and high performance — not only reducing power usage but also providing pleasant and effective interior illumination. Smart features like CleaningMode, which keeps LEDs on for cleaning while refrigeration is off, further demonstrate our focus on efficiency and convenience.
Corporate Responsibility documentation 2024
For more comprehensive insights, data and in-depth details, see our full Corporate Responsibility documentation.