Zero zone in the refrigerator: what is it for and how to use it

Have you ever noticed a compartment with a temperature in the refrigerator about 0°C, which manufacturers often call the “zero zone” or “freshness zone”? This is not just a marketing ploy - this solution radically changes the approach to food storage. Unlike standard shelves with +4...+5°C, conditions are created here that are as close as possible to the natural cooling environment, which allows you to preserve the freshness, taste and beneficial properties of products 2-3 times longer.

But how exactly does this compartment work? Why is it often confused with a regular freezer or vegetable area? And most importantly, which products are really worth storing there, and which ones can spoil faster? In this article we will analyze physical principles the zero zone, its difference from other sections, and also give practical recommendations for setup and use. You will learn how to avoid typical mistakes (for example, storing milk or eggs in this area) and why some models of refrigerators Samsung, Liebherr or Bosch equipped with two such compartments with different modes at once.

We will pay special attention critical temperature of 0°C - the threshold at which bacteria stop multiplying, but food does not freeze. This is a key difference from the freezer, where low temperatures destroy the cellular structure of food. Learning to properly use the zero zone means reducing food waste by 30-40% and saving on the purchase of new products.

What is the zero zone and how does it work

Zero zone (or BioFresh, FreshZone, CoolSelect Zone - names depend on the brand) - this is the compartment of the refrigerator where the temperature is maintained from −1°C to +1°C. The main task: to slow down oxidative processes and the growth of microorganisms without freezing products. Unlike a freezer (−18°C and below), ice crystals do not form here, which means the structure of meat, fish or herbs is not destroyed.

Technically, this is achieved due to:

• 🔄 Separate cooling circuit (in premium models) or precise control of air flows from main compressor.
• 🌡️ Temperature sensors with an error of no more than 0.5°C, which adjust the cooling in real time.
• 💨 Controlled humidity (usually 50-70%) - this prevents the greenery from withering and drying of meat.
• 🛡️ Antibacterial coatings on the walls (for example, silver ions in models Panasonic).

It is important to understand that the zero zone not replaces the freezer. It is intended for short-term storage (from 3 to 7 days) products that spoil most quickly: fresh meat, fish, seafood, dairy products (except cottage cheese), some fruits and vegetables. For example, salmon in vacuum packaging will last here for up to 5 days without loss of taste, whereas on a regular shelf (+4°C) it will have to be cooked in 1-2 days.

The difference between the zero zone and the freezer and other compartments

Many users confuse the zero zone with the freezer or vegetable compartment. Let's look at the key differences in the table:

The main advantage of the zero zone is preservation of texture and taste. For example, strawberries in the freezer turn into porridge after defrosting, but in the zero zone they remain elastic: at −18°C the fibers tear due to ice crystals, but at 0°C they remain elastic. juiciness.

⚠️ Attention: In some models (for example, Samsung RB37J5240SA), the zero zone can automatically switch to freezer mode if the temperature in the main chamber rises above +5°C. Check the settings through the control panel!

What products can and cannot be stored in the zero zone

Not all products tolerate temperatures of 0°C equally well. Here is a checklist of what should and should not be kept in this compartment:

And now - what is not allowed store in the zero zone:

• 🥛 Milk and cream —may sour due to unstable temperature on the verge of freezing.
• 🥚 Eggs —at 0°C the white becomes watery and the shell may burst.
• 🍌 Bananas, avocados, tomatoes —at low temperatures they turn black and lose their taste.
• 🧀 Soft cheeses (brie, camembert)—become crumbly.
• 🥖 Yeast baked goods —stale 2 times faster than at +4°C.

They require special attention vacuum packaging. They can be stored in the zero zone longer, but only if the packaging is not damaged. For example, vacuum-sealed beef will last here for up to 10 days, whereas in regular packaging - a maximum. 5.

How to properly set up the zero zone: step-by-step instructions

Many refrigerators (for example Liebherr CNef 4315 or Bosch KAN92VI30R) allow you to fine-tune the zero zone parameters. Here's how to do it:

1. Check factory settings. By default, the temperature can be set to +2°C - this is not optimal. Use the control panel or touch display to set. data-i="152">Check the factory settings. 0°C.
2. Adjust the humidity. For meat and fish, select the mode Dry (low humidity), for vegetables and herbs - Humid (high).
3. Activate the "SuperCool" mode. This function (available in Siemens i Gorenje) quickly cools food to 0°C in 2-3 hours, and then maintains the temperature.
4. Control the load. Do not fill the compartment more than 70% - this interferes with air circulation.

In some models (for example, LG Instaview Door-in-Door) the zero zone is divided into two parts with different modes:

• 🥩 Fresh Balancer (+1°C, high humidity) - for meat and fish.
• 🍎 Fresh Converter (0°C, average humidity) - for fruits and vegetables.

⚠️ Attention: If your refrigerator is equipped with a No Frostsystem, make sure that ice does not accumulate in the zero zone. Once a month, wipe the seals and walls with a weak solution of vinegar (1 tablespoon per 1 liter of water).

What to do if the zero zone stops cooling?

Check whether food is blocking the ventilation holes. In models with Twin Cooling (for example, Samsung RF23J9011SG), a separate compressor for the zero zone may turn off if the main unit overheats. Try restarting the refrigerator (unplug for 5 minutes). If the problem persists, call a technician to diagnose the thermostat or sensor.

Top 5 mistakes when using the zero zone

Even experienced users sometimes make mistakes that negate all the advantages of the zero zone. Here are the most common ones:

1. Storing food in open containers. Without sealed packaging, meat or fish become chapped, and fruits lose moisture. Use containers with lids or cling film.
2. Ignoring deadlines. Zero zone prolongs freshness, but not indefinitely. For example, chicken fillet is stored here for up to 5 days, not 2 weeks.
3. Overloading the compartment. If the food is packed tightly, the cold does not circulate evenly. Optimal filling is 60-70% of the volume.
4. Storing hot dishes. Before placing in the zero zone, cool soups or main dishes to room temperature. A sharp temperature change disrupts the operation of the sensors.
5. Neglect of care. Once every 2 weeks, wash the compartment with a weak soda solution (1 teaspoon of soda per 1 liter of water) and wipe dry. This will prevent the appearance of mold.

Another typical problem is improper distribution of products on shelves. Inside the zero zone, the temperature can vary: closer to the back wall it is colder, near the door it is warmer. Place meat and fish on the bottom shelf (the coldest place), and fruits and vegetables above.

Zero zone in refrigerators of different brands: comparison of technologies

Manufacturers use different approaches to implementing the zero zone. Let's consider the key features of popular brands:

When choosing a refrigerator, pay attention to type of cooling:

• 🔄 Dynamic (No Frost) - uniform distribution of cold, but higher energy consumption.
• ❄️ Static —quieter and more economical, but requires defrosting 1-2 times a year.
• 🌬️ Hybrid (for example, Total No Frost v Gorenje) - combines the advantages of both systems.

⚠️ Attention: In refrigerators with a system No Frost the zero zone may freeze if the door is often opened. In this case, do not try to scrape off the ice with a knife - use a plastic scraper and warm water.

Practical tips: how to prolong food freshness in the zero zone

To make the most of the zero zone, follow these recommendations:

• 🍖 Meat and fish: Pack in parchment paper or special bags with oxygen absorbers. This will prevent oxidation.
• 🥬 Greens: Rinse, dry on a paper towel and store in a container with a lid, lined with a napkin.
• 🍓 Berries: Do not wash before storing! Humidity speeds up spoilage. Use containers with holes for ventilation.
• 🧀 Cheeses: Wrap in wax paper - it allows air to pass through but retains moisture.
• 🍞 Bread: To prolong freshness, place in a linen bag or bread bin with holes.

Useful for meat and fish vacuum sealers. For example, in packaging FoodSaver chicken will remain fresh for up to 10 days at 0°C. An alternative is sealed containers with a valve for pumping out air (for example, Lock&Lock).

If you often store prepared foods (soups, stews) in the zero zone, divide them into portions in small containers. This way they cool and heat more evenly, and the risk of bacterial growth is reduced.

FAQ: Answers to frequently asked questions about the zero zone

Can medicines be stored in the zero zone? wine?

No. Medicines require a stable temperature of +2...+8°C (as in the main chamber), and wine spoils at temperatures below +10°C. The zero zone is too cold for these purposes.

Why does ice form in the zero zone, although the refrigerator is No Frost?

This can happen. due to:

1. Frequent opening of the door (humid air gets inside).
2. Clogged drain hole (check and clean it with a cotton swab).
3. Faulty defrost sensor (diagnostics required).

B Normally, light frost may appear, but should not accumulate.

How much electricity does the zero zone consume?

On average, a refrigerator with a zero zone consumes 10-15% more energy than a model without it. For example, Liebherr CNef 4315 (class A++) consumes about 350 kWh per day. year, while a similar refrigerator without BioFresh is 300 kWh. However, savings on products (due to extended shelf life) usually cover these costs.

Is it possible to disable the zero zone if it is not needed?

Yes, in most models it can be disabled through the settings menu (for example, in Samsung — CoolSelect Zone → Off). However, this can lead to uneven distribution of cold in the main chamber. If you do not use the zone, it is better to keep it empty, but turned on.

How often do you need to defrost the zero zone?

Depends on the type of system:

• No Frost —no defrosting required, it is enough to wipe once a month.
• Static — defrost 1-2 times a year (or when ice forms more than 5 mm thick).

To defrost, turn off the refrigerator, remove the food, leave the door open for 3-4 hours. Speed up the process with a hairdryer or hot. water is not allowed!