Modern LG refrigerators are equipped with many smart features that are designed to make the user’s life easier and keep food fresh for as long as possible. One of these key options is the Quick Freeze mode, often indicated as Express Freeze or simply “Quick Freeze” on the control panel. This technology not only speeds up the process of reducing the temperature in the freezer, but also radically changes the structure of the ice crystals that form inside the food.
When you place fresh berries, meat or ready-made meals as usual, the water inside the cells of the product freezes slowly, forming large, sharp crystals that destroy the cell walls. As a result, after defrosting, you get “porridge” with leaked juice. Fast freezing in refrigerators LG prevents this process, creating conditions for instant moisture setting, which preserves texture and taste.
In this article we will analyze in detail how exactly this system works in various models of LG refrigerators, when necessary activate the mode manually, and when smart technology does it for you. Understanding these processes will help you operate the device more efficiently and save energy.
The principle of operation of fast freezing technology
The basis of the fast freezing system in LG refrigerators is the intensive operation of the compressor and system fans No Frost. When the function is activated, the controller commands maximum cooling power, ignoring standard shutdown cycles. The temperature in the freezer compartment drops well below the standard -18°C, reaching values around -24°C or even -30°C depending on the model.
The key point here is the speed of the phase transition of water into ice. The faster this process occurs, the smaller the size of the ice crystals. Microscopic crystals do not damage the structure of the product, unlike large ice needles formed during slow freezing. Inverter compressor, which most modern LG models are equipped with, allows you to achieve such temperature conditions smoothly, without sudden voltage surges and excessive noise.
⚠️ Attention: Long operation in fast freezing mode without loading food, it leads to excessive energy consumption and increased wear on the compressor. Do not leave this function enabled all the time.
The system also takes into account the thermal load. If you have loaded a large amount of room temperature food into the chamber, the sensors will detect a sharp increase in the temperature inside the chamber and can automatically extend the operation of the intensive cooling mode until the indicators stabilize.
When it is necessary to turn on the intensive cooling mode
Many equipment owners mistakenly believe that the quick freezing function needs to be turned on every time they put something in the freezer. This is wrong. The mode is designed for specific situations involving a large volume of warm or room mass. The optimal time for manual activation is a few hours before loading products or immediately at the moment of placing a large amount of fresh food.
There are several scenarios when using this function is most justified:
- 🍖 You have purchased a large amount of fresh meat or fish for the week and plan to portion it out.
- 🍓 The harvest season has arrived, and you want to freeze berries, fruits or vegetables raw to preserve vitamins.
- 🍲 You have prepared a large volume of soup, broth or main dish and want to quickly cool and freeze it so that bacteria do not have time to multiply.
- ❄️ You have just defrosted the refrigerator, washed it and loaded all the products back - the mode will help quickly restore the temperature.
It is important to understand the difference between super freezing and normal operating mode. The standard mode maintains the temperature, but does not have enough power to quickly freeze a large volume of warm mass. If you put a hot pan in normal mode, the temperature in the entire chamber will rise, and already frozen food may begin to thaw, losing its properties.
Automatic and manual activation of the function
LG refrigerators have two ways to start intensive freezing, and it is important know which one is available in your model. In older or basic models, control is entirely manual via the control panel on the door. You need to press the button Freeze or Express Freeze and hold it for 3 seconds until the corresponding indicator appears.
Modern models with intelligent control (Smart Diagnosis, ThinQ) are equipped with an automatic mode. In this case, you don't need to click anything. Temperature sensors inside the freezer monitor the heat load. When you open the door and load the groceries, the air temperature rises sharply. The electronics detect this change and independently launch the fast freezing mode for a certain time (usually several hours) until the temperature returns to the set values.
How to disable the automatic mode?
If the automatic mode works for too long or you think it turned on by mistake, you can disable it manually. Press the Freeze button on the control panel once or through the LG ThinQ app on your smartphone. The indicator on the panel will go out and the refrigerator will go into standard temperature maintenance mode.>
Manual control gives you complete control over the process. You can activate the function in advance, for example, in the morning before going to the store, so that the camera is guaranteed to cool down before the groceries arrive. In this case, the indicator on the panel will light up, signaling operation in enhanced mode.
The influence of quick freezing on the quality of products
The main purpose of using the quick freezing function is to preserve the organoleptic properties of products. During slow cooling, large ice crystals form in the cells of vegetables, fruits and meat, which rupture the cell membranes. After defrosting, such a product loses juice, becomes flabby and less tasty. Quick freezing minimizes this effect.
Consider the effect on different product groups:
| Product type | Result of conventional freezing | Result of quick freezing (LG) |
|---|---|---|
| Berries (strawberries, raspberries) | Turn into puree after thawing | Retain shape and elasticity |
| Fresh meat | Loses a lot of juice, becomes dry | Remains juicy, retains color |
| Ready dishes | They may separate, sauces lose texture | Retain uniformity and taste |
| Greens | Turns black and withers | Remains bright and fragrant |
Fast freezing is especially critical for products with high water content. Watermelons, cucumbers, tomatoes turn into an unappetizing mass during normal freezing, but even they have a better chance of maintaining their structure when using the mode Express Freezealthough freezing them is still not recommended for consumption raw after defrosting.
Energy consumption and compressor efficiency
Using the mode Fast freezing inevitably leads to increased energy consumption. The compressor operates at the limit of its capabilities, and the fans circulate air at maximum speed. However, in LG refrigerators with inverter compressors, this increase is not catastrophic.
Inverter technology allows the motor to operate continuously, but with varying power, which is more efficient than constantly turning on and off a conventional compressor. However, it is worth saving resources. There is no point in turning on “turbo mode” if you only put one package of dumplings in the chamber. The standard power of the refrigerator is quite enough to maintain the temperature of a small volume.
The average operating time of the quick freezing function is from 3 to 12 hours, after which many models automatically return to normal mode. If you turned on the function manually, do not forget to turn it off when the food freezes, otherwise the refrigerator will “waste” the cold.
Typical errors when using the function
Despite the simplicity of control, users often make mistakes that negate the efficiency of the refrigerator or even harm the equipment. One of the most common mistakes is loading food into the chamber whose temperature is significantly higher than room temperature.
Even the fast freezing mode is not intended for freezing boiling soups or hot fried meat. A sudden surge of heat can stun sensors, cause condensation on interior walls and adjacent products, and place excessive stress on the cooling system. Products must cool to at least room temperature before going into the freezer.
- 🚫 Error: Turning on the empty chamber mode “just in case.” This simply wastes the compressor's resource.
- 🚫 Error: Loading the chamber to capacity with one type of product (for example, only meat). This disrupts the circulation of cold air, and the food in the center may not freeze quickly.
- 🚫 Error: Using plastic bags without removing air. The air gap acts as a heat insulator, preventing rapid freezing.
⚠️ Attention: Do not cover the ventilation holes inside the freezer with food or packaging. Impaired air circulation in the fast freezing mode can lead to local overheating of the compressor.
Packaging tips for maximum efficiency
In order for the fast freezing function in your LG refrigerator to work with maximum efficiency, it is important not only to set up the equipment, but also to properly prepare the products. The packaging plays the role of a barrier that protects against “frost burn” (drying of the surface of the product) and foreign odors.
Use special freezer bags, which differ from regular food bags in being more dense and resistant to low temperatures. Remove as much air as possible from the bag before sealing or tying it. This can be done using a cocktail straw (suck out the air and squeeze quickly) or a special vacuum sealer. Flat bags freeze faster than bulky lumps.
It is also worth observing the “first shelf” rule. It is better to place freshly loaded products that require quick freezing closer to the source of cold (usually the back wall or special quick freezing shelves), and not in the door or at the entrance. After complete freezing (after 12-24 hours), they can be moved to long-term storage areas.
Frequently asked questions (FAQ)
How long should the fast freezing mode work?
Usually 3-5 hours are enough for a small volume of products and up to 12-24 hours for a complete one. camera loading. After this, the food has already frozen, and further work in an enhanced mode does not make sense.
Is it possible to turn on quick freezing if the freezer is almost empty?
Technically it is possible, but not advisable. The refrigerator will quickly cool a small volume of air, but this will lead to unnecessary energy consumption. The mode makes sense when loading at least 1-2 kg of food.
Why does the quick freeze indicator light up even though I didn’t turn it on?
In models with automatic load detection, the refrigerator itself turned on the mode, recording an increase in temperature after opening the door and loading the products. This is normal operation of the system.
Does frequent use of quick freezing harm the refrigerator?
Provided the equipment is in good working order and an inverter compressor is used (as in most LGs), no. However, you should not keep the mode on for days unless necessary.
Is it possible to freeze hot foods in the fast freezing mode?
It is strictly not recommended. Even a powerful system is not designed to remove heat from a boiling liquid. This will cause ice to form, increase the temperature in adjacent cells and stress the compressor. Let the food cool.