A modern refrigerator has ceased to be just a freezer, turning into a complex climate system for maintaining food freshness. Looking at the control panel, many users notice the inscription Fresh and do not always understand its exact purpose. This function is not accidental; it represents a specially designed climatic zone with a special temperature and humidity.
The main task of the technology freshness is to extend the shelf life of products that cannot be frozen, but in a conventional refrigerator compartment they spoil too quickly. In a standard chamber, the temperature is usually around +5°C, which is ideal for some products, but disastrous for others. The Fresh zone creates conditions as close as possible to zero degrees, which slows down the growth of bacteria.
Having understood the principles of operation of this system, you can not only save your family budget by throwing away less food, but also preserve the taste of dishes. Refrigeration engineers we have developed different variations of this function, and it is important to understand the difference between them for correct use.
The principle of operation of the zero freshness zone
Technology Zero Fresh or the zero freshness zone is based on a simple biological fact: at temperatures close to 0°C, the processes of rotting and fermentation practically stop, but the water in the products does not freeze yet. This is the “golden mean”, which allows you to store delicacies much longer than in the main chamber.
Unlike the freezer, where the temperature drops to -18°C and below, here the products remain chilled, but not frozen. This is critically important for the structure of the cells of meat, fish and some vegetables. Ice crystals they simply do not have time to form in sufficient quantities to damage the tissue of the product.
⚠️ Attention: In some models of refrigerators, the Fresh zone may not have a separate evaporator, but is cooled by a common circuit. In such cases, the temperature can fluctuate from 0 to +2°C, which is also effective, but requires more careful attention to storage periods.
The control system often operates in automatic mode, maintaining the set parameters without user intervention. However, in advanced models electronic control allows you to manually adjust the degree of cooling depending on the chamber load.
Varieties of Fresh systems: Dry and Wet
Manufacturers of refrigeration equipment, such as Liebherr, Bosch, Samsung and others, often divide the freshness zone into two types: dry and wet. Understanding this difference is key to proper storage. Dry Fresh (dry fresh) is for foods that release moisture or require low levels of humidity to be preserved.
In the dry compartment, humidity is maintained at around 50%. These are ideal conditions for storing meat, poultry, fish, cheeses and sausages. High humidity in this case will only do harm, causing the appearance of mucus and an unpleasant odor. Wet freshness (Wet Fresh), on the contrary, maintains a humidity of about 90-95%.
Such an environment is necessary for vegetables, fruits, berries and herbs. At low humidity they would simply dry out, lose turgor and wither in a couple of days. Special dampers in the drawers allow you to regulate the air flow, creating the desired microclimate.
- 🥩 For Dry Fresh: chilled meat, fish, seafood, hard and soft cheeses, deli meats.
- 🥬 For Wet Fresh: leafy greens, salads, berries, fruits, vegetables with high water content (cucumbers, tomatoes).
- 🍞 Universal storage: some models allow you to switch modes, adapting the box to current needs.
Comparison of storage temperature conditions
To better understand the advantages of the Fresh zone, it is worth comparing its performance with a conventional refrigerator compartment and freezer. A difference of even a few degrees radically changes the speed of biochemical processes in products.
The table below shows average data typical for most modern refrigerator models. However, it is worth remembering that specific values may differ depending on the brand and model of equipment.
| Camera type | Temperature conditions | Humidity | Shelf life (approximate) |
|---|---|---|---|
| Basic department | +4...+6°C | Average | 2-3 days (meat), 5 days (vegetables) |
| Fresh zone (Dry) | 0...+2°C | ~50% | Up to 7-10 days (meat/fish) |
| Fresh zone (Wet) | +1...+3°C | ~90-95% | Up to 10-14 days (greens/fruits) |
| Freezer | -18°C and below | Low | Up to 12 months |
As can be seen from the data, the Fresh zone occupies an intermediate position. It does not freeze the product completely, like freezer, but stores it at lower temperatures than a standard shelf. This allows you to preserve the texture and taste that are often lost when deep frozen.
How to set up and activate the Fresh function
Activation and setting of the freshness zone depends on the model of your refrigerator. In budget segments, this function can work constantly, since the box is structurally located closer to the cold source. More complex systems require manual activation or setting of parameters.
Typically, control is carried out through a panel on the door or inside the chamber. You need to find a button labeled Fresh, Zero Zone or Optimal Fresh. Pressing this button switches the refrigerator to enhanced operating mode.
In models with electronic display, the settings can be more detailed. Sometimes you need to hold down the button for 3 seconds to enter the menu, and then select the desired option. It is important to follow the indication that will confirm the activation of the mode.
☑️ Checking the operation of the Fresh zone
⚠️ Attention: When the enhanced freshness mode is activated, the compressor may work more intensely, consuming more electricity. It is not recommended to keep this mode turned on constantly unless necessary if there are no products in the box.
What can and cannot be stored in the Fresh zone
Correct distribution of products is the key to the effectiveness of the technology. Many users make the mistake of loading everything into the freshness zone, which leads to food spoilage or excessive energy consumption.
Meat and fish - these are the main “clients” for the dry zone. Thanks to the low temperature, they remain fresh for almost a week, maintaining color and elasticity. In such conditions, cheeses do not weather and are not covered with excess moisture, maintaining their structure.
However, there are products that absolutely do not like cold even at +1°C. Tropical fruits such as bananas or mangoes can turn black and lose taste. Also, you should not put baked goods here - they will quickly become stale due to low humidity in dry mode.
- ✅ Recommended: chilled fish, minced meat, steaks, deli cuts, cottage cheese, packaged herbs.
- ❌ Not recommended: bread, pastries, bananas, open jars of sauces (can absorb odors), hot dishes.
- ⚠️ With caution: eggs (it is better to store in a door or special compartment so as not to overcool the yolk).
Is it possible to freeze food in the Fresh zone?
No, the temperature in the Fresh zone is above the freezing point of water. The food will remain chilled, but will not turn into ice. For freezing, use only the freezer.
Care of the freshness compartment and troubleshooting
The Fresh zone requires regular maintenance, perhaps even more careful than the rest of the refrigerator. Due to low temperatures and the specific nature of stored products (meat, fish), bacteria can multiply here faster if you do not monitor cleanliness.
Once a month, it is recommended to carry out preventive cleaning of the boxes. Use a soft cloth and neutral detergents. Aggressive chemicals can damage the plastic or leave an odor that the products will then absorb.
If you notice that the products in the Fresh zone have begun to deteriorate faster than usual, check the tightness of the box. Often the problem is food crumbs or ice that are preventing the seal from sealing properly. It is also worth checking the temperature settings.
In some cases, users experience condensation or, conversely, excessive dryness. This may indicate a problem with the damper or humidity sensor. In such a situation, it is better to contact Service Center for diagnosis.
Why does ice sometimes form in the Fresh zone?
Ice can form if you place fresh, unearthed foods with high humidity in the zone, or if the refrigerator door does not close tightly. The cause may also be a malfunction of the condensate drainage system.
Is it possible to disable the Fresh function?
Yes, in most models the function can be turned off with a button on the control panel. It makes sense to do this if you do not use this zone for a long time in order to save energy.
Does the Fresh zone affect the noise level of the refrigerator?
When the operating mode is active (especially immediately after loading food), the compressor may work more intensely, which slightly increases the noise level. However, in modern models with inverter compressors this is almost unnoticeable.
What temperature is considered optimal for storing greens?
For greens, the optimal temperature is from +1 to +3°C with high humidity (Wet Fresh mode). At lower temperatures, the leaves may freeze and become watery.
How much energy does the Fresh zone consume?
Energy consumption depends on the model and load, but using the Fresh zone usually increases the energy consumption of the refrigerator by 10-15% compared to normal operation.