Have you ever noticed that some refrigerators have a separate compartment marked «0°C» or «BioFresh»? This is not just a marketing ploy by manufacturers - it is zero zonespecially designed for optimal storage of perishable products. Unlike conventional shelves, where the temperature ranges from +2°C to +8°C, a stable microclimate is maintained here on the verge of freezing, but without ice formation.
Why is this important? The fact is that many products - from fresh meat to herbs - spoil not so much from time as from the wrong temperature. In a standard refrigerator compartment, they either freeze (losing texture and flavor) or remain too warm, accelerating the growth of bacteria. The zero zone solves this problem, prolonging freshness by 2-3 times. But how to use it correctly? And are there any nuances that are not mentioned in the instructions? Let's figure it out in order.
What is the zero zone and how does it work?
The zero zone (also called fresh zone or BioFresh compartment) is the compartment of the refrigerator where the temperature is kept at 0…+1°C. This mode is created due to:
- 🔄 Separate cooling circuit —in premium models (for example, Liebherr BioFresh or Samsung Twin Cooling Plus) the zero zone has its own fan and evaporator not connected to the main chamber.
- 🌬️ Controlled air circulation —flows are distributed so as to avoid temperature changes and condensation formation.
- 💧 Optimal humidity —some models have adjustment (for example, «Dry» for meat/fish and «Humid» for vegetables/fruits).
The main difference from the freezer is the lack of ice. Food does not freeze, but does not spoil either: at 0°C, bacteria practically do not multiply, and enzymes that cause rotting slow down their activity. For example, fresh meat in the zero zone will remain suitable for cooking for 5-7 days (versus 2-3 days in a regular refrigerator).
However, not all zero zones are the same. In budget models (for example ATLANT XM 4021-000) this can simply be a separate shelf with a reduced temperature, and in top-end models it can be a full-fledged compartment with automatic humidity control and antibacterial coating. To understand what exactly your refrigerator offers, take a look at the technical data sheet or the manufacturer’s website.
What products can be stored in the zero zone
Despite its versatility, the zero zone is not suitable for all products. Here's what you should put there:
- 🥩 Meat and poultry - fresh or defrosted (up to 7 days). Ideal for storage before cooking.
- 🐟 Fish and seafood —up to 3-4 days (longer only in the freezer). Especially relevant for delicacies such as oysters or salmon.
- 🧀 Dairy products —cottage cheese, cheese (except hard varieties), yoghurts without sugar.
- 🥬 Greens and vegetables —parsley, dill, lettuce, spinach (in high humidity mode).
- 🍓 Berries and fruits - strawberries, raspberries, grapes (no more than 5 days).
And here's what not keep in zero zone:
- ❌ Tropical fruits (bananas, pineapples) - they spoil at temperatures below +8°C.
- ❌ Bread and baked goods - will become stale due to low humidity.
- ❌ Canned food and sauces —they do not need such conditions.
- ❌ Eggs in shell —it is better to store at +2...+5°C.
Important: even in the zero zone, products must be stored in airtight containers or cling film. This will prevent cross-contamination with odors (for example, when fish “smells” like onions) and protect against excessive loss of moisture.
How to set the temperature correctly
In most refrigerators with a zero zone, the temperature is regulated separately from the main chamber. Here's how to do it:
Find the control panel. In models Bosch Serie 6 or Siemens iQ700 it is usually located on the door, in LG InstaView inside the chamber.
Select the mode for the zero zone. The options may have different names:
BioFresh(Liebherr),FreshZone(Samsung),VitaFresh(Bosch).
Set the temperature in the range 0…+1°C. In some refrigerators (for example Miele K 12020 S-2) you can set the exact value in increments of 0.5°C.
If necessary, adjust the humidity:
- High humidity (85–95%) - for vegetables, herbs, fruits.
- Low humidity (50–60%) - for meat, fish, cheeses.
Overloading the compartment. If you put too many foods, air circulation will be disrupted and the temperature will become uneven. The optimal load is no more than 2/3 of the volume.
Storage in the original packaging. Meat or fish from the supermarket in foam trays must be transferred to sealed containers - otherwise they will dry out or absorb foreign odors.
Ignoring hygiene. The zero zone requires regular cleaning (once every 2 weeks) using a vinegar solution or special products (for example "Topperr for refrigerators"). Otherwise, mold or bacteria may appear on the walls.
Improper arrangement of products. Do not place meat next to vegetables - this disrupts the microclimate. Use separate containers or shelves.
If your refrigerator does not have a digital display (for example Indesit ITF 118), adjustment is carried out with a mechanical slider. In this case, rely on a refrigerator thermometer (costs about 200–300 rubles) - place it in the zero zone for 12 hours to check the accuracy.
☑️ Checking the operation of the zero zone
⚠️ Attention: If ice or condensation forms in the zero zone, this is a sign of a malfunction. Possible reasons: clogged drainage, broken temperature sensor or problems with the seal. In this case, diagnostics from a service center is required.
Comparison of the zero zone with other compartments of the refrigerator
To understand the advantages of the zero zone, let's compare it with other compartments:
| Compartment | Temperature | Humidity | Shelf life of meat | Shelf life of greens |
|---|---|---|---|---|
| Zero zone | 0…+1°C | 50–95% (adjustable) | 5–7 days | 7–10 days |
| Main camera | +2…+8°C | ~60% | 2–3 days | 3–5 days |
| "Fresh zone" (without 0°C) | +2…+4°C | ~70% | 3–4 days | 5–7 days |
| Freezer compartment | −18°C and below | Low | 3–12 months | Not suitable |
Critical nuance: the zero zone does not replace the freezer! It is intended for short-term storage (up to 7–10 days), while freezing preserves food for months. For example, if you bought semi-finished products marked “store at −18°C”, they need to be placed in the freezer, and not in the zero zone.
Common errors when using
Even Experienced users sometimes make mistakes that negate all the benefits of the zero zone. Here are the most common:
⚠️ Attention: If you store raw meat or fish in the zero zone, place them on the bottom shelf (if the design allows). This will prevent drops of juice from getting on other products in case of accidental leakage.
Another typical problem is forgotten products. Due to the fact that food stays fresh longer in the zero zone, many people overlook expiration dates. To avoid this, use stickers with dates or reminder applications (for example, «Fridgely» or «Out of Milk»).
Zero zone vs. vacuum packaging: which is more effective
Many people wonder: if you use vacuum bags, can you do without zero zone? Let's compare:
- 🔹 Zero zone + regular packaging: extends the freshness of meat up to 7 days, greens - up to 10 days. Suitable for daily use.
- 🔹 Vacuum packaging + main chamber (+2...+4°C): meat is stored for up to 10-14 days, but requires additional costs for bags and vacuum sealer.
- 🔹 Vacuum + zero zone: maximum period - up to 2-3 weeks for meat and up to 2 weeks for greens.
Conclusion: vacuum packaging enhances the effect of the zero zone, but does not replace it in itself. For example, if you vacuumize chicken and put it in the main chamber (+4°C), it will last longer than without vacuum, but will still spoil faster than in the zero zone.
How to properly vacuumize products for the zero zone
1. Use bags with a corrugated inner surface - they remove moisture better. 2. Do not vacuum products with a high liquid content (for example, watermelon or cucumbers) - they will become deformed. 3. Before packaging, cool the product to +2...+4°C to avoid condensation inside the bag.
How to choose a refrigerator with a zero zone
If you decide to buy a refrigerator with a zero zone, pay attention to the following parameters:
| Criteria | What to look for | Examples of models |
|---|---|---|
| Zero zone type | A separate compartment with its own cooling (better) or a shelf in the main chamber | Liebherr CBNes 4855 (compartment), ATLANT MHM 2835-90 (shelf) |
| Volume | From 20 liters (for a family of 2-3 people) to 100+ liters (for gourmets) | Samsung RB37A52N0SA (37 l), Bosch KAN92VI30R (92 l) |
| Adjustment humidity | Two modes: «Dry» (for meat) and «Humid» (for vegetables) | Miele KFN 29092 D, Electrolux ERN3806AOW |
| Additional functions | Antibacterial coating, air ionizer, door open signal | LG GB-B539SLQZ (ionizer), Haier C2F636CWG (UV lamp) |
The cost of refrigerators with a full zero zone starts from 50,000 rubles (brands ATLANT, Indesit) and goes up to 200 000+ rubles (premium models Liebherr, Miele). Budget options often have a simplified cooling system, so before purchasing, read reviews about a specific model - some users complain about unstable temperatures or freezing.
⚠️ Attention: Technical characteristics (for example, the accuracy of maintaining temperature) may vary depending on the batch or region of sale. Check details with the seller or in the official documentation.
FAQ: Frequently asked questions about the zero zone
You can Is it possible to store defrosted food in the zero zone?
Yes, but not longer than 2-3 days. It is better to cook defrosted meat or fish as soon as possible, even if they were in the zero zone. Re-freezing is not recommended.
Why does ice appear in the zero zone?
This may be the case. caused by:
- Not tightly closed door (check the seal).
- Frequent opening of the compartment (warm air condenses).
- Failure of the temperature sensor or fan.
If the problem persists, contact a service technician center.
Is it necessary to wash the zero zone more often than the rest of the refrigerator?
Yes. Due to the high humidity and storage of raw foods, bacteria multiply faster here. Optimally, once every 2 weeks using baking soda or vinegar.
Is it possible to turn off the zero zone if it does not. is it necessary?
In most models - yes. For example, in refrigerators Bosch you can set the temperature to +4°C, and in Samsung you can completely turn off the air supply to the compartment. However, some budget models do not have this option.
Does the taste of food spoil? zone?
No, if you follow the storage rules. On the contrary, many products (for example, green vegetables or berries) retain their taste longer than in the main chamber, since they do not freeze or dry out.