Zero zone in the refrigerator: purpose, operating principle and rules use

Have you ever noticed that some foods in the refrigerator spoil faster than you would like? Meat loses color, herbs wilt, and fish acquires an unpleasant odor - even if you store them on the shelf at the lowest temperature. The reason often lies in the wrong choice of storage area. Modern refrigerators are equipped with special compartments, one of which - zero zone - has become a real breakthrough in preserving food freshness.

This article will help you understand what a zero zone is, how it works and why it is often confused with a freshness zone or a regular freezer. We will tell you in detail about temperature conditions, suitable products, and also give practical advice on setup and care. If you want to extend the shelf life of perishable foods without freezing, this material is for you.

What is the zero zone and how does it work

Zero zone (sometimes called 0°C zone or BioFresh y Liebherr, FreshZone y Samsung, VitaFresh y Bosch) is a special compartment in the refrigerator where the temperature is maintained from -2°C to +3°C. The main feature is that the products here are not frozen, but also not exposed to higher temperatures, as on standard shelves (+4...+6°C).

This mode creates optimal conditions for storing fresh meat, fish, dairy products, greens and even some fruits. Unlike the freezer, where products lose some of their taste and texture due to the formation of ice crystals, the zero zone preserves them almost in their original form, but much longer than on conventional shelves.

Technically, this is achieved due to:

• 🔄 Separate cooling circuit —in some models, the zero zone has its own compressor or air exchange system, not connected with the main one compartment.
• 🌬️ Controlled air circulation - uniform distribution of cold without sudden temperature changes.
• 💧 Optimal humidity level - usually about 50-70%, which prevents food from drying out (unlike the freezer, where moisture crystallizes).
• 🛡️ Isolated compartment —often the zero zone is located in a separate box with a sealed lid or door.

It is important to understand that the zero zone is not the same as the freshness zone (which usually operates at +2...+5°C). The latter is suitable for vegetables, fruits and ready-made dishes, but does not provide the same long-term preservation for meat or fish.

Why do we need a zero zone: advantages over conventional shelves

The main advantage of the zero zone is extending the shelf life of perishable foods by 1.5–3 times compared to standard refrigerator shelves. For example:

• 🥩 Fresh meat (beef, pork, poultry) remains suitable for consumption 5-7 days instead of 2–3.
• 🐟 Fish and seafood remain fresh up to 3-4 days (versus 1-2 on regular shelves).
• 🧀 Soft cheeses, cottage cheese, sour cream are not become covered with mold and do not turn sour up to 10–14 days.
• 🥬 Greens (parsley, dill, lettuce) do not wither or turn yellow 7–10 days.

In addition, the zero zone decides several key problems:

1. Preservation of taste and texture. Products do not freeze (as in the freezer) and do not dry out (as on the top shelves), so after defrosting or cooking they remain juicy.
2. Safety. A temperature of about 0°C slows down the growth of bacteria (for example, salmonella or listeria), but does not kill them completely - this is important for raw products that will not be cooked (for example, sushi or carpaccio).
3. Saving space in the freezer. Many foods that are usually frozen “just in case” (for example, meat that is planned to be cooked in 2-3 days) can be stored in the zero zone without loss of quality.

However, there are limitations. For example, not all products are suitable for storage at 0°C:

• ❌ Tropical fruits (bananas, pineapples, mangoes) - spoil faster due to low temperatures.
• ❌ Bread and pastries - become too dry.
• ❌ Canned food and food in glass jars may burst due to temperature changes.

What products can and cannot be stored in the zero zone

To make the most of the zero zone, it is important to select the products correctly. Below is a table with storage recommendations:

Particular attention should be paid product packaging. In the zero zone, the humidity is higher than on ordinary shelves, therefore:

• 📦 Use sealed containers or vacuum bags for meat and fish.
• 🧻 Wrap vegetables and herbs in paper towels before placing in the container.
• 🚫 Avoid plastic bags without a zipper —they contribute to the accumulation of condensation.

⚠️ Attention: Do not store products that have already begun to deteriorate (odor, mucus, mold) in the zero zone. Low temperature slows down but does not stop the decay process. Such products should be disposed of immediately.

What will happen if unsuitable products are stored in the zero zone?

Tropical fruits (bananas, pineapples) at a temperature of about 0°C begin to darken and lose taste due to damage to cell membranes. Bread and pastries become tough and stale 2–3 times faster than at room temperature. Canned food in glass jars can crack due to the temperature difference between the contents and the walls of the container.

How to correctly set the temperature in the zero zone

The optimal temperature in the zero zone depends on the type of stored products and the model of the refrigerator. Most manufacturers recommend setting the mode in the range from -2°C to +2°C, but there are nuances:

• 🥩 For meat and poultry: ideal temperature - 0…+1°C. This slows down the growth of bacteria, but does not lead to freezing.
• 🐟 For fish and seafood: it is better to set –1…0°C, as they spoil faster than meat.
• 🧀 For dairy products and cheeses: suitable +1…+2°C.
• 🥬 For herbs and vegetables: optimal +1…+3°C at high humidity.

In most refrigerators with a zero zone, the temperature is controlled:

1. Through touch panel on the door (for models Samsung, LG).
2. Using mechanical regulator inside the compartment (at Indesit, Atlant).
3. Automatically - in models with the function AutoDefrost or SmartFresh (y Liebherr, Bosch).

Example of setting for a refrigerator Bosch Serie 6:

1. Press the button VitaFresh on the control panel.
2. Select mode DrySafe (for meat/fish) or HydroSafe (for vegetables/greens).
3. Set the temperature using the buttons +/–.
4. Confirm the choice by pressing OK.

⚠️ Attention: If your refrigerator is equipped with the NoFrostfunction, make sure that the zero zone vents are not blocked by food. This can lead to uneven cooling and ice formation.

Make sure the temperature is set correctly|Check the seals for tightness. compartment|Arrange the products so that there is space between them for air circulation|Use containers or packaging recommended for the zero zone|Do not load the compartment to more than 70% of the volume-->

Zero zone vs fresh zone vs freezer: what is the difference

Many people confuse the zero zone with the fresh zone or freezer, but each compartment has its own purpose. Let's figure out how they differ:

The main difference between the zero zone and the freezer is lack of ice crystals. In the freezer, the water in the products freezes, damaging the cell walls, which leads to loss of juice during defrosting. In the zero zone, the products remain cooled, but not frozen, so they can be consumed immediately, without prior preparation. thawing.

But the freshness zone is more suitable for vegetables, fruits and ready mealsthat do not require such low temperatures. For example, it is good to store there:

• 🍎 Apples, pears, grapes.
• 🥕 Carrots, cucumbers, peppers.
• 🍲 Soups, sauces, leftover prepared dishes.

If your refrigerator has both zones, use them according to purpose: zero - for raw perishable products, freshness - for everything else.

How to care for zero zone: cleaning and defrosting

For the zero zone to work effectively, it must be cleaned and defrosted regularly. Unlike a freezer, ice forms less often here, but condensation and bacteria can accumulate faster due to the higher temperature.

Recommended maintenance frequency:

• 🧼 Weekly cleaning: wipe the shelves and walls of the compartment with a damp cloth and a mild detergent (for example, soda solution).
• ❄️ Defrosting: once every 2-3 months (if the model is not equipped NoFrost).
• 🔍 Checking the seals: once a month - they should fit tightly, without cracks and contamination.

Step-by-step instructions for defrosting the zero zone:

1. Disconnect the refrigerator from the network or switch it to mode Holiday (if any).
2. Take out all the products and place them in a cool place (for example, in a cooler bag).
3. Put towels or sponges on the bottom of the compartment to absorb melt water.
4. Leave the door open for 1-2 hours (the ice should melt naturally).
5. Wipe all surfaces with a vinegar solution or a specialized product for refrigerators (for example, Topperr 3101).
6. Dry the compartment and turn on the refrigerator 30 minutes before loading food.

For models with NoFrost defrosting is not required, but cleaning must be done regularly, since the ventilation system can spread odors and bacteria.

⚠️ Attention: Never use a hair dryer, hot water or sharp objects (knives, forks) for defrosting - this can damage the plastic or seals. Also avoid aggressive chlorine-based detergents - they can. leave a persistent odor.

Top 5 mistakes when using the zero zone

Even if you have a refrigerator with a zero zone, improper use can negate all its benefits. Here are the most common mistakes:

1. Storing food in its original packaging. supermarket. Polyethylene trays for meat or fish are not airtight, so food quickly weathers or absorbs odors.

   How to fix: Transfer products into vacuum bags or containers with a lid.

2. Compartment overload. If the products are placed too tightly, air circulation is disrupted and the temperature is distributed unevenly.

   How to fix: Fill the compartment no more than 70%, leaving gaps between products.

3. Ignoring the expiration date. Zero zone prolongs freshness, but does not make products last forever. For example, fish cannot be stored for longer than 4 days, even at -1°C.

   How to fix: Place stickers with the date of storage on the containers.

4. Storing hot or warm foods. This leads to an increase in temperature in the entire compartment and can cause condensation.

   How to fix: Cool foods to room temperature before storing.

5. Incorrect temperature setting. For example, setting +3°C for fish or -2°C for dairy products.

   How to fix: Use the manufacturer's recommendations (usually they are indicated in the instructions).

Another typical problem is forget to close the compartment lidIn some models (for example, Liebherr BioFresh) the zero zone is a drawer with a sealed lid. If it is not closed tightly, the temperature inside will rise and the food will begin to spoil faster.

FAQ: Frequently asked questions about the zero zone

Is it possible to store frozen food in the zero zone for defrosting?

Yes, but with reservations The zero zone is suitable for slow and even thawing meat, poultry or. fish (for example, if you plan to cook them in 6-12 hours). However, do not leave the food in the compartment for more than a day - after complete defrosting, they should be cooked or transferred to the refrigerator (+4°C).

It is not recommended to defrost in the zero zone:

• Large pieces of meat (weighing more than 2 kg) - they may not have time to thaw evenly.
• Semi-finished products (dumplings, cutlets) - it is better to defrost them in the microwave or on the refrigerator shelf.

Why ice forms in the zero zone, although the temperature is set right?

There may be several reasons:

1. Frequent opening of the lid —warm air gets inside, moisture condenses and freezes.
2. Faulty seal —if the rubber band is torn or dirty, the seal is broken.
3. Compartment overload —products are blocking the ventilation holes.
4. High humidity —some models require periodic drying (for example, wiping the walls).

If ice appears regularly, check the settings NoFrost (if any) or contact a service technician center.

Can I turn off the zero zone if I don’t use it?

In most refrigerators, the zero zone cannot be turned off - it is part of the overall cooling system. However, you can:

• Set the temperature to the maximum value (for example, +3°C) to reduce energy consumption.
• Leave the compartment empty but closed - this will not affect the operation of other departments.
• Some models (for example, Samsung Family Hub) have mode Energy Saving, which temporarily disables additional functions.

You can completely deactivate the zone only physically - by turning off the power to the refrigerator, which is impractical.

Which refrigerators with a zero zone are considered the best in 2026?

Among the popular ones models with a reliable zero zone:

• Liebherr CBNes 5155 —premium class with a system BioFresh and a separate compressor for the zero zone.
• Bosch KAN92VI30R —optimal price/quality ratio, function VitaFresh with adjustable humidity.
• Samsung RB37A52N0SA —a budget option with a zone FreshZone and a system NoFrost.
• LG GB-B509SLQZ —a compact model with technology DoorCooling+ for uniform cooling.

When choosing, pay attention to:

• The volume of the zero zone (from 20 to 100 liters).
• The presence of separate temperature control.
• Type of defrosting (NoFrost or drip system).

Is it possible to store medicines or cosmetics in the zero zone?

Theoretically, yes, but with caution. The zero zone is suitable for storage:

• 💊 Insulin (if a temperature of +2...+8°C is required).
• 🧴 Some creams and serums marked "store in the refrigerator."
• 🧪 Pregnancy tests or rapid tests (if indicated in the instructions).

However:

• Do not store medications near raw meat/fish - risk of cross-contamination.
• Check the temperature with thermometer - some medications require strictly +4°C.
• Avoid storing alcohol tinctures or essential oils - they can absorb odors.