Refrigerators LG are one of the most popular on the market due to their reliability and innovative technologies. But even the most advanced equipment requires maintenance, especially when it comes to refrigerant. Freon is the “lifeblood” of the refrigeration system, on which the cooling efficiency and durability of the unit depend. If your refrigerator LG stops freezing, a strange noise appears or ice forms on the walls, the problem may lie precisely in a leak or aging of freon.
In this article we will examine what freon is used in LG refrigerators of different generationshow to determine its type by model, what signs indicate the need for replacement, and whether you can cope with this task yourself. You will also learn why modern refrigerants are more environmentally friendly than old ones and how this affects the operation of equipment. The information will be useful both to owners of new models LG InstaView or LG Door-in-Door, and to those who operate refrigerators that are 10 years old.
What types of freon are used in LG refrigerators?
The company LG has been changing the refrigerants in its refrigerators for decades, following global environmental standards and technological innovations. Today, most models use freons. Let's look at each type in more detail. R-134a And R-600a, but in older units (manufactured before 2010) you can find R-12 or even R-22. Let's look at each type in more detail.
R-134a (tetrafluoroethane) is the most common refrigerant in refrigerators LG over the last 15 years. It belongs to the group of hydrofluorocarbons (HFCs) and is considered safer for the ozone layer compared to its predecessors. This freon is used in most models of the middle and premium segment, including the LG GR, LG GC i LG GBseries. Its advantages:
- 🌱 Low ozone depletion potential (ODP = 0)
- ⚡ Good energy efficiency
- 🔧 Compatible with most modern compressors
R-600a (isobutane) is a natural refrigerant, which LG began to be actively used in environmentally friendly models after 2015. It is used in refrigerators with energy consumption class A+++ and higher, for example, in series LG InstaView Door-in-Door or LG ThinQ. Main advantages:
- 🌍 Zero impact on the ozone layer and minimal greenhouse effect
- 💰 Low cost (compared to synthetic analogues)
- 🔋 High energy efficiency (10–15% better than R-134a)
Outdated refrigerants (R-12 and R-22are rare today, but they can still be found in refrigerators LG manufactured before 2005–2010. These freons are banned from production due to their environmental hazards, but they are still used in older systems. For example, R-12 (difluorodichloromethane) had a high ozone depletion potential (ODP = 0.82), and R-22 (chlorodifluoromethane) - ODP = 0.05. Replacing them with modern analogues often requires modification of the refrigeration circuit.
How to determine the type of freon in your LG refrigerator?
There are several ways to find out exactly what refrigerant is charged into your refrigerator. The most reliable is to look at nameplate (metal plate) with technical data. It is usually located on the rear wall of the unit, next to the compressor, or inside the chamber (on the side wall). Look for inscriptions like:
Refrigerant: R-134aGas: R-600aHFC-134aorIsobutane (R-600a)
If the nameplate is worn out or missing, the type of freon can be determined by year of manufacture and model series. Here is the general classification for refrigerators LG:
| Year of manufacture | Model series | Freon type | Examples models |
|---|---|---|---|
| Before 2005 | GR-, GA-, GB- (early) | R-12 or R-22 | LG GR-389SQF, LG GA-B419SLR |
| 2005–2015 | GR-, GC-, GB- (late) | R-134a | LG GR-B207JHL, LG GC-B247JLV |
| 2015–2020 | InstaView, Door-in-Door | R-134a or R-600a | LG GC-B247SLUV, LG GR-B207JLQZ |
| After 2020 | ThinQ, InstaView (new) | R-600a | LG GR-D247SLZ, LG GC-X247CLAV |
Another indirect sign - compressor type. Refrigerators are usually equipped with inverter compressors, which are quieter and consume less energy. If your model has such a compressor, with a 90% probability it uses isobutane. R-600a usually equipped with inverter compressors LG Smart Inverter, which are quieter and consume less energy. If your model has such a compressor, there is a 90% chance that it uses isobutane.
Signs of a freon leak: when is it time to sound the alarm?
Freon circulates in a closed circuit of the refrigerator, and its leak is a serious problem that requires immediate attention. Here are the key symptoms indicating loss of refrigerant:
- ❄️ The refrigerator does not cool, but the compressor is running without stopping. The temperature in the chambers rises above +10°C, food spoils.
- 🔊 Extraordinary sounds: gurgling, hissing or whistling from the back of the refrigerator (a sign of depressurization of the tubes).
- 🧊 Evaporator freezing or back wall. If a thick layer of ice forms on the walls, this may indicate a freon leak or a clogged capillary tube.
- 💨 Warm air from the ventilation grilles (in models with the system No Frost).
Leak R-600a (isobutane) is especially dangerous, since this gas is flammable. If it leaks in the room, a faint odor of gas (reminiscent of propane) may appear. If you smell a characteristic odor, immediately unplug the refrigerator and ventilate the room - isobutane in high concentrations is explosive!
What to do if the refrigerator stops freezing?
If the unit is turned on but is not cooling, first check:
1. Is it connected to the network (are the indicators lit?).
2. Is the defrost mode set (Defrost).
3. Is the freezer compartment overloaded (this interferes with air circulation).
If everything is in order, but the temperature does not drop, the freon or compressor is most likely to blame.
It is important to distinguish a freon leak from other faults. LG s No Frost stopped cooling, but the fan is working, the problem may be:
- 🔋 Temperature sensor malfunction;
- 🧊 Drainage system clogged;
- ⚡ Board failure controls.
Is it possible to replace freon in an LG refrigerator yourself?
Theoretically You can fill the refrigerator with freon yourself, but in practice it an extremely risky undertakingThe fact is that working with refrigerants requires:
- 🛠️ Special equipment (vacuum pump, pressure gauge manifold, cylinder with freon);
- 🔧 Skills in soldering copper tubes (to eliminate leaks);
- 🧪 Knowledge of the pressure in the system and types of oils for the compressor.
In addition, R-600a (isobutane) is explosive, and if refueled incorrectly, it can lead to water hammer of the compressor. If you decide to repair it yourself, here is the minimum set of actions: R-134a If filled incorrectly, it can lead to water hammer of the compressor. If you still decide to repair it yourself, here is a minimum set of actions:
Find and eliminate the leak (most often these are locking connections or aluminum tubes)
Connect the pressure manifold to the service port
Pump out the remaining freon and evacuate the system (at least 30 minutes)
Fill in a new one refrigerant, monitoring the pressure using a pressure gauge
Check the operation of the compressor and the temperature in the chambers -->
However, even with successful charging, there is no guarantee that the system will work correctly. For example, if moisture remains in the circuit, it will lead to corrosion and repeated leakage. Therefore we recommend contacting LG service centerswhere:
- 🔍 Diagnostics are carried out using a leak detector;
- 🛡️ The tightness of the system is guaranteed;
- 📝 A certificate of completion of work is issued indicating the type of freon and its quantity.
How much does it cost to replace freon in an LG refrigerator?
The cost of replacing freon depends on several factors:
- 📅 Type refrigerant (R-134a cheaper R-600a);
- 🔧 Difficulties of leakage (soldering the tube or replacing the evaporator);
- 🏠 Region (in Moscow and St. Petersburg prices are higher than in the regions).
Approximate prices in service centers (2026):
| Type of work | Cost (rub.) | Notes |
|---|---|---|
| Leak diagnostics | 1 500–2 500 | Includes leak detector testing |
| R-134a refill (up to 150 g) | 3 000–4 500 | Without leak repair |
| R-600a refill (up to 100 g) | 4 000–5 500 | Isobutane is more expensive and requires caution |
| Soldering 1-2 leak points | 2 000–3 500 | Price per connection |
| Full refill with vacuum | 5 000–8 000 | Includes replacement filter-drier |
Please note: if the leak occurs due to corrosion of aluminum tubes (a common problem in refrigerators LG 2010–2015), the entire circuit may need to be replaced, which will cost $ 15,000–25,000 rubles. In such cases, the feasibility of repair depends on the age of the equipment.
What is the danger of incorrect refilling of freon?
If freon is refilled in violation of the technology, this can lead to serious consequences:
- 💥 Compressor water hammer. If there is any moisture left in the system, it will freeze in the capillary tube and block the circulation of freon. The compressor will run dry and will burn out. Isobutane is flammable, and its accumulation in a room can lead to a fire.
- 🔥 Fire or explosion (if there is a leak R-600a). Isobutane is flammable, and its accumulation in a room can cause a fire.
- ❄️ Evaporator freezing. An incorrect amount of freon leads to uneven cooling and ice formation.
- 💸 Increased energy consumption. The compressor will work for wear, trying to compensate for the lack of refrigerant.
It is especially dangerous to mix different types of freons! For example, if you add c R-134a to the system, this will lead to a chemical reaction, damage to the seals and failure of the compressor. R-600a, this will lead to a chemical reaction, damage to the seals and failure of the compressor. Also, you cannot refill R-12 instead of R-134a —these refrigerants require different types of oils.
How to extend the life of freon in an LG refrigerator?
Although freon in a sealed system can last for decades, its life depends on operating conditions. Here are some tips to help avoid premature leakage:
- 🏡 Correct placement. The refrigerator should be placed on a flat surface, away from heat sources (radiators, stove). Vibration from an uneven floor can damage the soldering of the tubes.
- 🧹 Regular cleaning. Dust on the condenser (rear grille) impairs heat transfer and causes the compressor to work harder, which increases the load on the system.
- ❄️ Careful defrosting. Do not use sharp objects to remove ice; they may puncture the evaporator. In models with No Frost defrosting is enough to carry out 1-2 times a year.
- 🔌 Stable power supply. Frequent power surges harm the compressor and can lead to microcracks in the circuit. Use a voltage stabilizer.
You should also avoid Frequent transportation of the refrigerator. During transportation, the circuit tubes may become deformed, which will lead to microcracks. If moving is unavoidable, use the original packaging and clamps for the compressor.
Can an LG refrigerator be used after a freon leak?
Technically yes, but only after a complete repair. If you simply refill the freon without fixing the leak, it will leak again within a few months. In addition, operating the compressor without refrigerant leads to its overheating and shortens its service life.
FAQ: Frequently asked questions about freon in LG refrigerators
Is it possible to fill an LG refrigerator with another type of freon if the original one is not available?
No, this is strictly prohibited. Each refrigerant requires a specific type of compressor oil and system pressure. For example, replacing R-134a to R-600a will lead to compressor failure due to incompatibility with polyester oil. As a last resort, you can use drop-in replacements (for example, R-413A instead of R-12), but this should be done by a specialist.
How often do you need to change freon in an LG refrigerator?
Under normal conditions freon does not require replacement during the entire service life of the refrigerator (10–15 years). Refilling is only needed in case of a leak or after repair of the circuit. If your refrigerator operates stably, there is no reason to interfere with the system.
What is the difference between R-134a and R-600a in LG refrigerators?
R-134a is a synthetic freon, safe for the ozone layer, but with a moderate greenhouse effect. It is used in most models LG until 2020. R-600a is natural isobutane, completely environmentally friendly, but flammable. It is 10–15% more energy efficient, but requires more careful handling. Refrigerators with R-600a usually quieter and more economical.
Is it possible to find a freon leak in an LG refrigerator yourself?
It is difficult to detect a leak without special equipment, but you can try to visually inspect:
- Places where pipes are soldered (locking connections often leak);
- Aluminum evaporator tubes (they corrode over time);
- Condenser (rear grill) for oil stains (freon comes out along with the oil).
For accurate diagnosis you need an electronic leak detector or an ultraviolet additive in freon.
How much freon is needed to refill an LG refrigerator?
The amount of freon depends on the model and volume of the refrigeration system. On average:
- R-134a: 100–150 grams;
- R-600a: 50–100 grams.
The exact weight is indicated on the refrigerator nameplate in grams or ounces (for example, Refrigerant Charge: 120g).