2 or 4 on the refrigerator - which temperature is colder? Full analysis with examples

You are standing in front of the refrigerator, trying to figure out what the mysterious numbers on the temperature controller mean. “2” or “4” - which one is colder? Why don't manufacturers write degrees directly on the pen? And most importantly, how not to spoil the products by choosing the wrong mode?

This confusion arises due to the fact that different brands use different designation scales. Somewhere the numbers mean cooling power level (the higher the number, the colder), and somewhere - target temperature (the higher the number, the warmer). In this article we will understand how the regulator works in Samsung, Indesit, Atlant and other popular brands, and also give clear recommendations for setting for different types of products.

Spoiler: in 90% of modern refrigerators, the number “4” means a colder mode than “2”, but there are exceptions - we will also consider them. And you will also learn why you can’t set the regulator to maximum “just like that” and how to save energy without risking food.

Why are there no degrees on the refrigerator - only numbers?

Manufacturers deliberately avoid indicating the exact degrees on the regulator according to three reasons:

• 🔹 Temperature range by zone. In the freezer compartment -18°C, and in the “freshness zone” +2°C - how to indicate this in one number?
• 🔹 External factors. The temperature depends on the load on the refrigerator, the frequency of opening the door and even the time of year.
• 🔹 Scale versatility. The same regulator can be installed on models with different compressor power.

Instead of degrees, arbitrary unitsare used, where:

• 🔘 1–2 — gentle mode (suitable for minimum load or warm climate).
• 🔘 3–4 —standard mode (recommended by most manufacturers).
• 🔘 5–7 —intensive cooling (for heat or an overloaded refrigerator).

⚠️ Attention: In refrigerators Bosh and Siemens with the system VarioInverter the scale can be inverted - there “1” corresponds to the maximum cold, and “7” to the minimum. Always check the instructions for your specific model!

If the instructions are lost, be guided by compressor sound: when switching from “2” to “4” it should start working longer and louder. If the sound has not changed, most likely you have an “inverted” scale.

Comparison table: 2 vs 4 in refrigerators of different brands

Please note: in the table indicated approximate values. Actual temperature may differ by ±2°C due to:

• 🔹 Refrigerant type (for example, R600a cools faster than R134a).
• 🔹 The presence of a No Frost system (it maintains a more stable climate).
• 🔹 Sensor location (in some models it measures the temperature of the air, not the food).

What happens if you constantly keep the regulator at “4”?

Many users mistakenly believe that “the colder, the better” In practice, constant. operation at maximum settings leads to:

1. ❄️ Icing of products. Vegetables and fruits in the “freshness zone” will be covered with ice, and the meat will become “dry” due to dehydration.
2. ⚡ Increased energy consumption. 15–20%.
3. ❌ Wear of equipment. Compressor life is reduced by 30% with constant operation at high speeds.

Exception - hot summer (above +30°C in the room) or loading a large amount of warm products (for example, after shopping). In such cases, you can temporarily set "4", but not longer than 12-24 hours.

How to set the temperature correctly: step-by-step instructions

To set the refrigerator optimally, follow this algorithm:

Check the average occupancy (empty/full/average)|

Determine the temperature in the room (below +20°C / 20–25°C / above +25°C)|

Set the regulator to “3” and wait 6–8 hours|

Measure the temperature in the middle of the main chamber (ideally +4°C)|

Adjust the setting (if too warm - +1 division, if cold - −1)-->

For accurate temperature measurement:

1. Place refrigerator thermometer (or a regular street one in a sealed bag) on the middle shelf.
2. Wait at least 6 hours without opening the door.
3. Compare the readings with the norm:
   • 🥦 Freshness zone: +0...+3°C (for greens, meat, fish).
   • 🧀 Middle shelves: +3...+5°C (dairy products, sauces).
   • 🍎 Bottom drawers: +5…+7°C (fruits, vegetables).
   • ❄️ Freezer compartment: −18...−20°C (for long-term storage).

⚠️ Attention: If after setting the temperature in the refrigerator differs from set at more than 3°C, this may indicate thermostat malfunction or refrigerant leakIn this case, a specialist diagnosis is required.

Features of adjustment in refrigerators with No Frost and drip system

Cooling technology directly affects how the temperature regulator works:

• 🌬️ No Frost (without defrosting):
  • The numbers on the regulator correspond target temperature, not power.
  • The difference between “2” and “4” is usually 3–4°C (for example, +7°C and +3°C).
  • Fans distribute the cold evenly, so the difference between the shelves is minimal.
• 💧 Drip system (manual defrosting):
  • The numbers indicate the intensity of the compressor.
  • The temperature on the upper shelves may differ from the lower ones by 2-3°C.
  • With mode “4”, more ice forms on the back wall, requiring defrosting.

In refrigerators with No Frost you can safely set “4” in the summer - the system will regulate the humidity itself, but for drip models it is better not to rise above “3” to avoid frequent defrosting.

Why is there no dial with numbers in the freezer?

In most refrigerators, the freezer has a separate regulator with precise temperature designations (for example, −16°C, −20°C, −24°C) or an “Eco/Normal/Maximum” switch. This is due to the fact that for freezing it is critical to comply. the standard is −18°C, and conventional numbers are inconvenient here. The exception is budget models, where the freezer is controlled by the same wheel as the refrigerator compartment.

If you have just such a refrigerator, remember: when the regulator is set to “4”, the temperature in the freezer will be about −20...−22°C, and “2” - −14…−16°C.

Top 5 mistakes when setting the temperature (and how to avoid them)

Even experienced users sometimes make mistakes that lead to product damage or equipment breakdown. Here are the most common:

1. 🔥 Ignoring the external temperature. In summer, when it’s hot, the refrigerator needs to be switched to a colder mode (from “2” to “3–4”), and in winter, on the contrary, reduced (from “4” to “2–3”).
2. 🧊 Storing liquids in the door. The temperature on the door shelves is 2–3°C higher than in the chamber. Milk or juices spoil quickly here.
3. 📦 Overloading the shelves. If the products are tightly adjacent to the back wall, they will freeze, even if the regulator is set to “2”.
4. 🕒 Frequent opening of the door. Each time it is opened, the temperature inside rises by 1–2°C. If this happens frequently, the compressor does not have time to restore the cold.
5. ❄️ Refusal to defrost. The ice on the walls acts as an insulator - the refrigerator begins to “lie” and show the wrong temperature.

To avoid these mistakes, use a simple life hack: once a month put it on the middle shelf a glass of water. If after 24 hours the water has not frozen or become warm, the mode has been selected correctly.

FAQ: Frequently asked questions about setting the temperature

Is it possible to set the regulator to “0” (turn off cooling)?

No, position “0” or “Off” completely turns off cooling, but not powering the refrigerator. This is only needed for defrosting or transportation. If you leave the refrigerator in this mode for more than 1-2 hours, the food will begin to deteriorate, and condensation will appear on the walls.

Exception - models with the "Vacation" function (Holiday), where "0" activates minimum cooling (+10...+15°C) for saving energy in the absence of energy for a long time.

Why is it −24°C in the freezer compartment, and +8°C in the refrigerator, although the regulator is at “4”?

This is a typical problem for refrigerators with one compressor i one regulator. In such models, the cold is distributed according to the principle “first the freezer, then the refrigerator.” If the freezer is overloaded or the door does not close well, the refrigerator compartment does not receive enough cold.

Solution:

• Unload the freezer.
• Check the rubber seals on the door.
• Set the regulator to “3” and observe for 24 hours.

How does the “Super Freeze” function affect the temperature?

The “Super Freeze” mode (Super Freeze) temporarily lowers the temperature in the freezer to −26...−30°C to quickly freeze fresh food. In the refrigerator compartment, the temperature may drop by 1–2°C (for example, from +4°C to +2°C).

Important: this mode needs to be turned off manually after 24 hours, otherwise:

• Energy consumption will increase by 30–40%.
• Food in the refrigerator compartment may freeze.
• The compressor will wear out.

What to do if the refrigerator does not cool even at “5”?

If, at maximum settings, the temperature in the chamber is above +10°C, the reasons may be the following:

• 🔌 Electronics failure (temperature sensor does not work).
• ❄️ Leakage freon (refilling required).
• 🔊 Failure of the compressor (no characteristic humming can be heard).
• 🚪 Wear of the seal (the door does not close hermetically).

For diagnostics:

1. Unplug the refrigerator for 10 minutes, then turn it on again.
2. Listen to see if the compressor starts (you should hear a click and a slight vibration).
3. Check whether the indicators on the panel are lit.

If After these steps, nothing has changed - call a specialist. Repairing a refrigerant or compressor yourself is dangerous!

How to save energy without sacrificing food freshness?

Here are 5 working methods:

1. 🌡️ Set the regulator to “3” (not “4”). The difference in temperature will be only 1-2°C, and the savings will be up to 10%.
2. 🧊 Defrost the refrigerator every 3-6 months (ice increases the load on the compressor).
3. 🔄 Do not place the refrigerator next to the stove or radiator. The optimal distance is 50 cm.
4. 📦 Fill the chamber by 60–70%. An empty refrigerator wastes energy on cooling the air.
5. 💡 Replace the incandescent lamp with an LED (if the model has backlighting).

Additionally: use night mode (if any), which reduces the cooling power during peak tariff hours.