Modern refrigerators have ceased to be just freezers for freezing meat or storing milk. Technological progress has made it possible to introduce special compartments into the design, which radically change the approach to maintaining freshness. One of these solutions was fresh zonewhich manufacturers of household appliances often talk about, but not all users understand its real value.
This department is intended for products that require special conditions: they are too warm in the freezer, but already cold or dry in the main chamber. It is here that ideal conditions are created for meat, fish, cheeses and vegetables, allowing them to remain suitable for consumption several times longer than on a regular shelf.
Anyone who wants to rationally use the space of their unit and save the family budget by reducing the amount of discarded spoiled food needs to understand the intricacies of this module. Let's study in detail how this system works and why it is considered a standard in mid- and high-class models.
Principle of operation and temperature conditions
The main idea embedded in the concept fresh zoneis to maintain a temperature close to zero, but not turning into a deep minus. Unlike the main chamber, where the standard indicator is +4...+5°C, in the freshness zone the thermometer shows from 0°C to +3°C. This borderline state prevents the water in the cells of the products from freezing, preserving their structure, but significantly slows down the proliferation of bacteria.
The most important factor here is not only cold, but also humidity. Depending on the type of box, the humidity level can be high (for vegetables and fruits) or low (for meat and fish). Engineers have created a complex air circulation system that isolates this compartment from the warm currents entering when the main door is opened.
⚠️ Attention: Setting the thermostat of the main refrigerator to the minimum value will not replace a full-fledged fresh zone. You will simply freeze the food in the main chamber, ruining its texture, and the special drawer may not reach the desired mode without a separate cooling circuit.
Some advanced models are equipped with a separate compressor or evaporator for this compartment, which allows you to independently control the climate inside. However, even simpler systems use a damper to regulate the flow of cold air from the freezer compartment, which ensures stable conditions.
Types of freshness zones: dry and wet
When choosing a refrigerator or studying the instructions for an existing unit, you may encounter a division into “dry” and “wet” zones. This is not a marketing gimmick, but an important technical difference that determines which products should be placed in which box.
The wet zone (often indicated by a picture of a fruit or a drop) is intended for storing vegetables, fruits, herbs and berries. Here the humidity is maintained at 90-95%. The design of the box is made in such a way as to minimize the evaporation of moisture from the products themselves, while preventing the formation of condensation, which could lead to rotting.
In turn, dry zone (with a picture of fish or meat) has a humidity of about 50%. This is critical for protein products. If you store meat in a humid environment, it will quickly become covered in mucus and spoil. Dry cold allows you to preserve the color and elasticity of fillets, fish or cheeses for several days without losing taste.
- 🥦 High humidity is critical for greens and salads, otherwise they will wilt in a few hours.
- 🥩 Meat and fish require low humidity to the surface remained dry and non-slippery.
- 🧀 Hard cheeses and sausages are better preserved in a dry zone without becoming moldy.
- 🍓 Berries and soft fruits feel ideal in the wet compartment, maintaining elasticity.
In two-chamber systems, these zones can be separated by different drawers, and in simpler models - represented by one volume with adjustable humidity dampers. Understanding this difference helps to avoid the common mistake of adding vegetables to meat, accelerating the spoilage of both products.
Comparison of shelf life of products
The main question that worries users: how effective is this technology really? The difference in storage time can be colossal. If a prepared salad or an open package of cold cuts lives on a regular refrigerator shelf for 1-2 days, then under special conditions this period increases 2-3 times.
Below is a table showing the approximate shelf life of various categories of products depending on where they are placed in the refrigerator.
| Product | Regular shelf (+5°C) | Fresh zone (0...+3°C) | Freezer compartment |
|---|---|---|---|
| Fresh meat (chilled) | 1-2 days | 3-5 days | 6-12 months |
| Fish and seafood | 1 day | 2-3 days | 3-6 months |
| Greens and salads | 2-3 days | 5-7 days | Not recommended |
| Hard cheeses (sliced) | 3-4 days | 7-10 days | Changes the structure |
| Ready meals (chilled) | 2 days | 4-5 days | 1-3 months |
As can be seen from the data, maximum efficiency is achieved specifically for products planned for consumption in the next few days. This eliminates the need to freeze meat that you plan to cook tomorrow or the day after tomorrow, maintaining its juiciness after defrosting.
It is worth noting that the timing may vary depending on the initial freshness of the product. If you bought meat that has been lying in a supermarket warehouse for a day, then even ideal conditions in the fresh zone will only slightly extend its life, but will not make the spoiled product fresh.
Design features and location
The location of the fresh zone in the refrigerator depends on the model and manufacturer. Most often, this compartment is located at the bottom of the refrigerator compartment, since cold air is heavier than warm air and naturally sinks down. This allows you to save energy on maintaining a low temperature.
In some models Liebherr, Bosch or LG the freshness zone can occupy a significant part of the volume, sometimes up to 30%. The boxes are made of special impact-resistant plastic that holds the temperature well. An important element is the sealing system, which isolates the interior of the drawer when it is closed.
Why can drawers freeze?
Sometimes users encounter the fact that the freshness zone drawer freezes to the body. This occurs due to high humidity and water droplets hitting the guides. To avoid this, periodically wipe the slides and seals dry.
Climate control can be mechanical (rotary humidity controls on the box lid) or electronic. In expensive models, there is a display on the door or inside the chamber where you can accurately set the temperature in increments of 0.1 degrees. This is especially true for storing delicate products, such as expensive fish or specific cheeses.
⚠️ Attention: Do not overload the freshness zone drawers to capacity. For proper air circulation, there must be free space between products. Dense packing will disrupt heat transfer and lead to a local increase in temperature.
Proper operation and care
For the freshness zone to work effectively, it must be properly cared for. The accumulation of food residues, juice from berries or blood from meat can lead to an unpleasant odor and the growth of bacteria, which will negate all the advantages of the technology.
Regular washing of boxes with warm water and a mild detergent is a mandatory procedure. Particular attention should be paid to ventilation holes and sensors if they protrude into the camera. Contamination of the temperature sensor can lead to incorrect operation of the entire cooling system.
☑️ Monthly care of the freshness zone
It is also important to ensure that the products are not touched the back wall of the box if it is a cooling element. Contact can lead to freezing of food at the points of contact, which is especially undesirable for vegetables and fruits, which thereby lose their taste.
If you notice that food in the freshness zone has begun to deteriorate faster than usual, check the tightness of the refrigerator door and the drawer itself. A loose fit leads to a constant flow of warm air from the room, and the system does not have time to compensate for heat loss.
Frequently asked questions (FAQ)
Is it possible to freeze food in the freshness zone?
No, this is impossible and not necessary. The temperature in this compartment is kept above the freezing point of water (0°C). The food will remain chilled, but will not turn into ice. To freeze, use the freezer.
Why do vegetables freeze in the freshness zone?
This can happen if the refrigerator thermostat is set to maximum cooling, and the freshness zone does not have its own precise settings. Try increasing the overall temperature in the refrigerator a little or moving sensitive vegetables closer to the drawer door.
Is BioFresh different from Multi Air Flow?
Yes. BioFresh (Liebherr brand) is a specific fresh zone technology with humidity control. Multi Air Flow is a multi-flow cooling system that evenly distributes cold throughout the chamber, but does not necessarily create separate climatic zones with zero temperature.
Does it need to defrost the freshness zone?
In refrigerators with the No Frost system, the freshness zone does not require manual defrosting, since the condensation evaporates automatically. Drip systems may require periodic defrosting of the entire refrigerator, including this compartment, approximately every 6-12 months.