In the fall, when the summer season is coming to an end, or when moving to a new apartment, owners of household appliances often face a dilemma: where to put a large unit if there is no free space in a warm house? Many people decide to take it refrigerator to a glazed balcony, leave it in an unheated garage or in the vestibule of a private house, believing that nothing will happen to it when it is turned off. However, such a solution requires careful preparation, since low temperatures, changes in humidity and direct sunlight can cause serious damage to the internal components of the device.
Modern equipment is designed to operate in a strictly defined climate class, which usually implies a temperature range from +10°C to +32°C or +43°C. Exceeding these values, even when the device is turned off, creates extreme conditions for the materials. The plastic becomes brittle, the rubber seals lose their elasticity, and physical and chemical changes occur inside the compressor, which can lead to breakdown at the first start after wintering.
In this article we will look in detail at how to properly preserve equipment so that it survives the cold season without loss. You will learn about the risks associated with moisture condensation, oil thickening and deformation of parts, and also receive a step-by-step algorithm for actions before sending the refrigerator for winter. Ignoring these rules often leads to expensive repairs or complete replacement of the unit.
Critical risks of storage in the cold
The main danger for equipment left in the cold lies not so much in the fact of low temperature, but in the properties of materials and working fluids when exposed to them. Compressor oil, which is in engine, when the temperature drops below +5°C it begins to thicken, and in severe frosts it can completely freeze. If you turn on the refrigerator immediately after bringing it in from the cold, the thickened lubricant will not be able to ensure proper sliding of the parts, which will lead to dry operation and rapid wear or jamming of the piston group.
Moisture is another enemy. In an unheated room, where the temperature fluctuates (warmer during the day, colder at night), it forms on the internal and external surfaces of equipment. Water penetrates the electrical contacts, oxidizing them, and enters the thermal insulation layer. Wet insulation loses its properties, and ice that forms inside porous materials during expansion can destroy the structure of the body from the inside. condensation. Water penetrates the electrical contacts, oxidizing them, and enters the thermal insulation layer. Wet insulation loses its properties, and ice that forms inside porous materials during expansion can destroy the structure of the body from the inside.
It is also worth considering the effect of ultraviolet radiation on external elements. If the equipment is placed near a window or on an unglazed balcony, the sun's rays accelerate the aging of the plastic. Control panels turn yellow, become brittle, and rubber ones dry out and crack, losing their tightness. This means that even if the motor survives the winter, the refrigerator will no longer keep the cold due to the loose fit of the doors. door seals dry out and crack, losing their tightness. This means that even if the motor survives the winter, the refrigerator will no longer keep cold due to the loose fit of the doors.
⚠️ Attention: A sharp temperature change when bringing an ice unit into a warm room causes abundant condensation not only outside, but also inside the electronic boards. Connecting a wet device to the network is guaranteed to result in a short circuit.
Do not forget about rodents. During the cold season, mice and rats seek shelter and often choose the warm insulation of household appliances to do so. They can gnaw wires, make passages in polyurethane foam and make nests, which will require complete disassembly and disinfection of the equipment before use.
Preparing the refrigerator for the winter period
To minimize risks, it is necessary to properly prepare the equipment before sending it to an unheated room. This process takes no more than an hour, but saves you from many problems. The first and most important step is complete defrosting. Even if you plan to store the refrigerator in the “no frost” mode, residual moisture in the drainage channels and pan may freeze and rupture the tubes or plastic elements.
After defrosting, the unit must be thoroughly washed and, most importantly, dry. Use a soft cloth and leave the doors open for several hours in a warm room to evaporate any moisture from hard-to-reach areas. Cleanliness inside the chamber will prevent the appearance of mold and an unpleasant musty smell, which is very difficult to remove later.
☑️ Checklist for preparing for wintering
Pay special attention to transportation. If you transport the refrigerator yourself, it must be securely secured in the body or trunk to prevent shock and vibration. The compressor is mounted on springs, and strong shocks can lead to broken tubes or damage to the motor mount. It is recommended to transport equipment in an upright position, although some models Liebherr or Bosch allow transportation on its side (but not on the back or front panel).
After delivery to the storage location, the refrigerator should be placed on a flat surface. Don't place it directly on the concrete floor of a garage or balcony - use a wooden pallet or mat. This will create an air layer that protects against dampness coming from the ground and will prevent corrosion of the bottom and lower part of the body.
The influence of climate class on safety
Each refrigerator is marked with a climate class, which indicates the range of ambient temperatures at which it can operate. However, these same parameters indirectly affect storage conditions. Understanding these differences will help you assess the risks for your specific model.
| Class | Temperature Range | Storage Recommendations |
|---|---|---|
| N (Normal) | +16°C to +32°C | Only heated rooms, risk of damage at t < +10°C |
| SN (Subnormal) | from +10°C to +32°C | Permitted in hallways, on closed verandas (not lower than +5°C) |
| ST (Subtropical) | from +18°C to +38°C | Only warm regions, absolutely not allowed in the cold |
| T (Tropical) | from +18°C to +43°C | Extremely hot climate, storage only in heat |
As can be seen from the table, even the most “cold-resistant” class does not provide for work or long-term stay at negative temperatures temperatures. Most household models belong to classes N or SN. If your balcony freezes to -5°C or -10°C, this is already beyond any acceptable standards for refrigerator components.
It is important to note that the climate class affects the viscosity of the oil and the pressure of the refrigerant. Tropical models use freon with different characteristics, and the oil is designed for high temperatures. When such a system is cooled, the properties of the substances change critically, which makes them even more vulnerable to cold than conventional models.
What happens to the refrigerant in the cold?
With strong cooling, the freon pressure in the system drops. If you try to turn on the refrigerator, the pressure may become insufficient for normal circulation, and the oil will not be able to return to the compressor, which will lead to water hammer.
Packaging and protection from external factors
Proper packaging is the second front of defense after proper preparation. The main task of packaging in this case is not to protect against shock (as during transportation), but to provide ventilation and protection from dust, rodents and direct sunlight. It is strictly forbidden to wrap the refrigerator in thick plastic film or stretch tape “with your head.”
Polyethylene creates a greenhouse effect. When the temperature fluctuates, dew will constantly fall inside such a “cap,” which will immediately be absorbed into the thermal insulation and metal parts. The best solution would be to use breathable materials: old cotton sheets, burlap or special covers made of spunbond. These materials allow air to pass through, but retain dust.
If storage takes place in a garage where work with chemicals or gasoline is possible, make sure that vapors of these substances do not enter the vicinity of the refrigerator. Plastic and rubber parts can absorb odors and be destroyed by aggressive chemicals. In such cases, additional insulation of the room or a sealed (but ventilated!) box for equipment is required.
Do not forget about protection from rodents. Place repellers around and inside (in the chambers), for example, cotton wool soaked in vinegar, or special ultrasonic devices, if they can be powered. Mice often chew the wires going to the compressor or make their way through the soft insulation.
Rules for the first start after winter
Winter has passed, and you have decided to use the refrigerator again. Don’t rush to plug it into the outlet right away! This is the most common mistake that negates all efforts to preserve equipment. The unit must go through the process of acclimatization.
Bring the refrigerator into a warm room and leave it in the packaging (or just standing) for at least 24 hours. If the frosts were severe (below -15°C), it is better to wait two days. During this time, the compressor oil will warm up, become liquid and drain into the crankcase, and the condensate formed on the electronic boards will completely evaporate.
⚠️ Attention: An attempt to start (the compressor) with frozen oil is equivalent to running a car engine without lubrication. The risk of jamming of the piston group in the first seconds of operation is more than 80%.
After the equipment has stood, remove the packaging, check the integrity of the power cord and wiki. Make sure the inside is dry and free of rodents. Only after this can you carefully plug the device into the network. For the first few hours, it can work in enhanced mode or, conversely, take long pauses - this is normal for a system that has not worked for a long time.
Is it possible to store a working refrigerator in the cold?
The question often arises: is it possible not to turn off the refrigerator, but simply leave it working on the balcony, for example, to store food there as in a freezer? The answer from the experts is clear: no, you cannot. Operating the refrigerator at a temperature below the minimum threshold specified in the instructions (usually +10°C or +5°C) is prohibited.
The problem is in the thermostat. If it’s +5°C outside, and you set the room to +4°C, the thermostat will “think” that the cold has already been reached and will not give the command to turn on the compressor. As a result, the food in the main chamber will begin to deteriorate. If we are talking about a freezer, then at an outside temperature of -10°C the compressor may also not turn on, and the temperature inside will begin to rise, since the thermal insulation is not designed to operate in “thermos” mode at extremely low temperatures outside.
In addition, working in the cold leads to the same problems with oil and refrigerant mentioned above, but in dynamic mode. This is a guaranteed path to compressor failure and circuit depressurization. Even if the manufacturer claims an extended range, we are usually talking about short-term exposure, and not about constant operation in an unheated shed.
Frequently asked questions (FAQ)
Is it possible to store a new refrigerator in unheated box in the cold?
Original packaging (cardboard, foam, film) is intended to protect against scratches and shocks during transportation, but not for thermal insulation. The box creates the effect of a thermos, but moisture from the air will condense inside, since cardboard is hygroscopic. In addition, technological residues of moisture often remain in factory containers. It is better to unpack the equipment, dry it and preserve it correctly.
What will happen if you do not remove the shipping bolts before storage?
The shipping bolts secure the compressor so that it does not dangle during transportation. You can leave them for storage, this is even useful - the suspension springs will be in a compressed or fixed state, which will reduce the risk of their deformation during a long period of inactivity. However, before turning them on for the first time, they must be removed, otherwise the compressor will burn out or vibrate strongly.
How to get rid of the smell of dampness after winter storage?
If the smell does appear, wash the chambers with a weak solution of soda or vinegar. Then place an open container of activated carbon, ground coffee, or a special odor absorber for refrigerators inside. Keep the doors open until the aroma disappears completely. Do not use aggressive chemicals, they can damage the plastic.
Do you need to lubricate the seals before storage?
Yes, this is a great idea. Rubber seals (cuffs) become tanned in the cold. Wipe them with a soft cloth soaked in silicone grease or glycerin. This will preserve the elasticity of the rubber and prevent the appearance of microcracks through which the cold will subsequently escape.
Is it dangerous to store a refrigerator next to a radiator or heater?
Yes, it is dangerous. Overheating of the rear wall (where the condenser is located) and side panels can lead to deformation of the plastic and delamination of the thermal insulation. In addition, high temperatures accelerate the aging of rubber components. The distance to heating devices should be at least 50 cm.