The rear grille of the refrigerator is one of those parts that is rarely paid attention to until it begins to rattle, rust, or interfere with cleaning. Meanwhile, this element plays a key role in the operation of the equipment: it is responsible for compressor coolingprotecting internal components from dust and mechanical damage. But what is this grill made of? Why is it plastic in some models and metal in others? And does the material affect the durability of the refrigerator?
In this article we will take a detailed look at what materials manufacturers use (Indesit, Samsung, LG, Atlant etc.), their advantages and disadvantages, and also give practical advice on care. You will learn why the grilles in modern models are often made of plastic, although metal used to dominate, and how the material affects noise, heat dissipation and even energy consumption the refrigerator.
Spoiler: the choice of material is not an accident, but the result of engineering calculations. And if your grille begins to rust or deform, this is a signal not only about the need for replacement, but also about possible hidden problems in the operation of the equipment.
1. Why does a refrigerator need a rear grille: functions and design
The grille (also called condenser grille or rear panel) is not just a decorative element. Its main tasks are:
- 🔥 Heat dissipation: the refrigerator compressor heats up during operation, and the grille dissipates this heat into the environment. Without it, the equipment would overheat and fail.
- 🛡️ Protection: prevents dust, dirt and foreign objects from entering the condenser tubes and other internal components.
- 🔊 Noise absorption: in some models, the grille acts as an additional damper, reducing vibration of the compressor.
- 🔄 Air circulation: the correct design of the grille ensures uniform air flow, which is critical for cooling efficiency.
In most refrigerators, the grille is located on the back wall and is a perforated panel. However, in models with a system No Frost or Frost Free it can be integrated into the side walls or even hidden under decorative panels (as, for example, in some Liehberr or Bosch).
It is interesting that in old Soviet refrigerators (for example, ZIL or Minsk) the grille was often open - without a protective panel. This simplified maintenance, but increased the risk of damage to the capacitor. Modern manufacturers make a compromise: the grille covers critical components, but remains easily removable for cleaning.
2. Basic materials for. gratings: comparison of pros and cons
The material of the grating directly affects its strength, thermal conductivity and resistance to corrosion. Let's consider the most common options used by manufacturers.
2.1. Metal gratings: steel and aluminum
Metal is a classic material for gratings that is still used today. in budget and some premium models. Most often it is:
- ⚙️ Galvanized steel: coated with a layer of zinc to protect against rust. Cheaper than aluminum, but heavier and can corrode over time if the coating is damaged.
- ♻️ Aluminum: lightweight, corrosion-resistant, with high thermal conductivity. Used in mid- and high-class models (for example, Samsung RB or LG DoorCooling+).
Metal advantages:
- ✅ High strength - withstands mechanical loads (for example, when moving a refrigerator).
- ✅ Better thermal conductivity compared to plastic - more effectively removes heat from the compressor.
- ✅ Durability - with proper care, lasts for decades.
Disadvantages:
- ❌ Tendency to corrosion (especially steel) with high humidity or damage to the protective layer.
- ❌ Higher price (aluminum) or weight (steel).
- ❌ It can rattle when the compressor vibrates if dampers are not provided.
2.2. Plastic grilles: why are they replacing metal
Plastic is the leader today. in the segment of mid-budget refrigerators (Atlant, Indesit, Beko). For the manufacture of grilles they use:
- 🔶 ABS plastic (acrylonitrile butadiene styrene): durable, resistant to shock and temperature changes.
- 🟢 Polypropylene: cheaper ABS, but less resistant to UV radiation (may turn yellow over time).
- ⚫ Polystyrene with reinforcement: used in premium models to increase rigidity.
Advantages of plastic:
- ✅ Does not rust or corrode - ideal for wet rooms (for example, if the refrigerator is in the kitchen without a hood).
- ✅ Light weight - simplifies transportation and installation.
- ✅ Low price - reduces the final cost of the refrigerator.
- ✅ Silence - does not resonate the vibration of the compressor.
Disadvantages:
- ❌ Worse thermal conductivity - may require additional ventilation holes.
- ❌ Less strength - may crack with a strong impact or careless cleaning.
- ❌ Over time, it turns yellow or fades (especially cheap polypropylene).
Critical fact: in refrigerators with plastic grilles, manufacturers often install more powerful fans to compensate for poorer heat transfer. This can increase energy consumption by 5-10% compared to metal counterparts.
| Material | Thermal conductivity | Strength | Corrosion resistance | Noise | Price |
|---|---|---|---|---|---|
| Galvanized steel | High | Very high | Medium | High | Medium |
| Aluminium | Very high | High | High | Low | High |
| ABS plastic | Low | Medium | Very high | Very low | Low |
| Polypropylene | Low | Low | High | Very low | Very low |
⚠️ Attention: If your refrigerator was manufactured before 2010, there is a high probability that its grille is made of non-galvanized steel. Such models require special care - regular drying and treatment with anti-corrosion compounds, otherwise rust can damage the condenser.
3 How to determine the material of the grille in your refrigerator
It is not always possible to immediately understand what the grille is made of, especially if it is painted or covered with a decorative film. Here are several ways to determine the material:
- Visual inspection:
- 🔍 Metal usually has a characteristic shine (even under paint), and plastic is matte.
- 🎨 If the grille is painted, scratch an inconspicuous area with your fingernail: a trace of zinc or aluminum will remain on the metal, a white mark will remain on the plastic.
- Tactile signs:
- ✋ Metal is colder to the touch than plastic (especially if the refrigerator is working).
- 🔨 Knock on the grill: metal makes a ringing sound, plastic makes a dull sound.
- Documentation:
- 📄 Look at the instructions for refrigerator - in the "Technical Specifications" or "Device" section information about materials may be indicated.
- 🔍 On the manufacturer's website, the model card sometimes indicates the type of grille (for example, "plastic back panel with perforation").
- 🏷️ Budget models (Indesit, Beko, Atlant) are often equipped with plastic grilles.
- 💎 Premium brands (Liehberr, Miele) can use aluminum or combined materials.
If you are still in doubt, take a photo of the grille and compare with images on the Internet. For example, metal grilles often have a characteristic perforation pattern (round or rectangular holes), while plastic ones have a smoother surface with small cracks.
☑️ How to distinguish a metal grill from a plastic one
4. Why manufacturers are abandoning metal in favor of plastic
The trend for plastic grilles began in the 2010s, and today they dominate the market. Why?
Economic reasons:
- 💰 Plastic is cheaper than metal in production (especially aluminum). This allows you to reduce the price of the refrigerator without losing functionality.
- 🏭 Easier to process - does not require welding or painting like metal.
Technical advantages:
- 🔇 Less noise - plastic dampens compressor vibration, which is important for models with inverter motors (for example, Samsung Digital Inverter).
- 🌡️ Less condensation - metal can “cry” during temperature changes, plastic does not have this.
- 🔄 Simplified design - plastic grilles are easier to integrate into modern cases with rounded shapes.
Ecology and safety:
- ♻️ Plastic is easier to recycle (although this is a controversial point - not all types of plastic are recyclable).
- ⚡ Less risk of short circuit - a metal grill can become a conductor if the insulation is damaged.
However, switching to plastic is not always justified. For example, in hot climates, a metal grill works better. with heat dissipation. Some manufacturers (for example, Gorenje) are returning to combined solutions: a plastic panel with a metal frame inside.
5. rust, cracks and deformations
The material of the grating determines what problems may arise during operation. Let's consider typical malfunctions and their causes.
5.1. Rust on metal gratings
Corrosion is the main problem of steel gratings. It occurs due to:
- 💧 High humidity in the room (for example, if the refrigerator is next to the sink or stove).
- 🧂 Salty air - relevant for coastal regions or if the refrigerator is on the balcony.
- 🔧 Damage to the protective layer (zinc or paint) during cleaning or transportation.
How to prevent rust:
- 🧴 Once every 6 months, treat the grille with an anti-corrosion spray (for example, WD-40).
- 🧽 After wet cleaning, wipe the grille dry.
- 🔧 If the first signs of corrosion appear, clean off the rust with sandpaper and cover the area with special metal paint.
⚠️ Attention: If the rust has eaten through the grille, do not try to restore it - replace the part. Corrosion can damage the condenser tubes, which will lead to freon leakage and damage to the refrigerator.
5.2. Cracks and deformations of plastic grilles
Plastic is fragile and can be easily damaged by:
- 🧹 Aggressive cleaning with hard brushes or abrasive detergents.
- 🚛 Careless transportation (for example, if the refrigerator was dropped while moving).
- ☀️ Prolonged exposure to direct sunlight (UV destroys the structure of the plastic).
What to do if the grille is cracked:
- 🔧 Small cracks can be repaired with epoxy glue or a special plastic welder device.
- 🆕 If the damage is serious, replace the grill with a new one. For popular models (Atlant, Indesit), spare parts can be easily found in online stores.
- 🛡️ To prevent cracks, clean the grill with a soft sponge and non-abrasive products (for example, Mr. Muscle for plastic).
Deformation plastic grille is usually associated with heating. If the refrigerator is too close to the stove or radiator, the grille may “lead.” In this case, only replacement will help.
5.3. Rumble and vibration: when the problem is in the grille
If the refrigerator starts to hum loudly, the reason may be:
- 🔊 Resonance of the metal grill - it increases the vibration of the compressor Solution: place rubber gaskets under the fastenings.
- 🌀 Poor fixation of the plastic grille - if the latches are broken, the panel may rattle. Solution: Replace the fasteners or the entire grille.
- 🌀 Condenser contamination —dust and dirt behind the grille cause the compressor to wear out, increasing noise.
If the hum appears suddenly, check to see if a foreign object has fallen behind the grille (for example, a piece of cling film or a jar lid).
6. How to properly care for the refrigerator grill
The grill requires regular maintenance, otherwise it will stop performing its functions.
6.1. Cleaning the grill: step-by-step algorithm
- Unplug the refrigerator and let it sit for 10-15 minutes (to allow the compressor to cool down).
- Remove the grill:
- If it is latched, carefully pry it off with a flat-head screwdriver sting.
- If there are screws, unscrew them and remove the panel.
- Remove dust:
- 🧹 Use a vacuum cleaner with a narrow nozzle or a soft brush.
- 🚫 Do not blow with your mouth - dust may get into your eyes or respiratory tract!
- Wash the grill:
- 🧼 For metal: warm soapy water + soft sponge. For stubborn dirt - dishwashing detergent (Fairy, AOS).
- 🧴 For plastic: avoid abrasives and solvents (for example, acetone). Use special products for plastic or diluted vinegar (1:1 with water).
- 🌬️ Wipe the grill dry with a microfiber cloth.
- 🔧 Make sure that all fasteners are in place, and fix the panel.
Cleaning is recommended every 3-6 monthsIf there are animals in the house or the kitchen is very dusty (for example, due to renovation), care for the grill more often.
6.2. cleaning: what can and cannot be used
| Grill material | Approved means | Prohibited means |
|---|---|---|
| Galvanized steel | Soap solution, WD-40 (for protection against rust), vinegar (diluted) | Abrasive powders, bleach, acids (hydrochloric, sulfuric) |
| Aluminium | Aluminum cleaning products (Aluminium Cleaner), soft gels | Alkaline detergents, sandpaper, metal brushes |
| ABS plastic | Plastic cleaners (Mr. Muscle), diluted alcohol, microfiber cloth | Acetone, gasoline, solvents, abrasives |
| Polypropylene | Warm soap solution, soda (in the form of a paste), soft napkins | Hot water (can deform), aggressive alkalis |
⚠️ Attention: If your refrigerator is equipped with a system No Frost, be careful when cleaning the grille - there may be fans and electronics behind it. Before removing the panel, read the instructions or watch the video disassembly for your model at YouTube.
6.3. Prevention of problems: 5 rules of care
- 📅 Regularity: Clean the grill at least 2 times a year, even if it looks clean. Dust accumulates gradually and impairs heat transfer.
- 🌡️ Temperature conditions: Do not place the refrigerator near heat sources. (stove, radiator, heater). The optimal distance is 50 cm.
- 💧 Humidity: If the kitchen is humid, use moisture absorbers (for example, Silica Gel) next to the refrigerator.
- 🔌 Vibration: Make sure the refrigerator is level (adjust the legs). This will reduce the load on the grille and reduce noise.
- 🛠️ Spare parts: If the grille is damaged, do not use improvised materials for repairs (for example, tape or tape). This can worsen heat transfer.
What will happen if you don’t clean the grill?
A dirty grill impairs heat transfer, causing the compressor to work longer and louder. This increases energy consumption by 15–20% and shortens the life of the refrigerator by 2–3 years. In advanced cases, overheating of the compressor can lead to its breakdown (replacement cost starts from 5,000 rubles).
7. Replacing the grille: when is it needed and how to choose a new one
If the grille is severely damaged (rusted, cracked or deformed), it must be replaced. Here's how to do it right.
7.1. When replacement is required
Signs that it is time to change the grille:
- 🚨 Through corrosion - holes in the metal threaten to damage the capacitor.
- 🔊 Severe deformation - if the grille is bent so that it interferes with circulation air.
- 🧩 Broken fasteners - if the panel is not fixed and rattles.
- 🔥 Fusing - rare, but happens with a short circuit (requires checking the refrigerator's electrical system!).
If the damage is cosmetic (for example, minor scratches or minor rust), you can get by with repairs. But if the grille has lost more than 30% of its area or is deformed, replacement is required.
7.2. How to choose a new grill
To avoid making a mistake with your choice, follow the algorithm:
- Find out the model of the refrigerator:
- 🏷️ The sticker with the model is usually located on the inner wall of the refrigerator compartment or at the back.
- 📄 If the label worn out, look at the model in the warranty card or receipt.
- Find an original spare part:
- 🛒 Seal the grille according to the model on spare parts websites: 4holoda.ru, zapchasti-dlya-holodilnikov.ru or at official service centers.
- 🔍 If the original is not find, select an analogue in size and type of fastening (measure the old grille before purchasing).
- Check compatibility:
- 🔧 Make sure that the new grille fits:
- Dimensions (width, height, thickness).
- Type of fastening (screws, latches).
- Material (if you are replacing metal with plastic, check to see if the heat transfer will deteriorate).
- 🔧 Make sure that the new grille fits:
The cost of a new grille depends on the material and brand:
- 💰 Plastic: 500–1 500 rubles.
- 💰 Metal (galvanized): 1,000–2,500 rubles.
- 💰 Aluminum: 1,500–3,500 rubles.
⚠️ Attention: If you replace a metal grill with a plastic one (or on the contrary), the thermostat may need to be re-adjusted. Plastic dissipates heat less well, so the compressor may start working longer. In this case, contact the technician for diagnostics.
7.3. Replacing the grille with your own hands: step-by-step instructions
To replace you will need:
- 🔧 Screwdriver (Phillips or flat, depending on the fastenings).
- 🧲 Magnetic holder for screws (so as not to lose them).
- 🧴 Silicone grease (for plastic latches).
Action algorithm:
- Unplug the refrigerator and let it cool.
- Remove the old grill:
- If it is on screws, unscrew them counterclockwise.
- If it is on latches, carefully pry it off with a flat blade screwdriver, starting from the top corner.
- Clean the mounting area from dust and dirt.
- Install a new one grille:
- For screws: screw them diagonally to avoid distortion.
- For latches: press the panel until a characteristic click is heard.