Why does the refrigerator turn yellow and how to prevent it
Yellowness on the inner walls of the refrigerator is a problem that every second home cook faces after 3-5 years of operation. Even with regular cleaning, the plastic loses its original white color and becomes covered with a grayish coating or stains. The reason lies not only in poor-quality care: chemical reactions between plastic and food fumes are to blame, as well as oxidation of polymers under the influence of ultraviolet radiation (if the door is often open).
Refrigerators with ABS plastic - are especially vulnerable. it is cheaper, but absorbs odors and changes color faster. Premium models (for example, Liebherr or Samsung Family Hub) often use polystyrene with antibacterial coating, which retains whiteness longer. However, even such surfaces require proper cleaning. If you ignore yellowing, over time the plastic will become brittle, and bacteria will multiply in microcracks.
Before you start bleaching, check type of coating your refrigerator. To do this, look at the instructions or inspect the internal walls: glossy surfaces are usually covered with a protective layer, matte surfaces are more porous and require delicate processing.
Preparing the refrigerator for bleaching: 5 required steps
Improper preparation can ruin all efforts. For example, if food debris is not removed, the active ingredients in bleaches will react with fats, and the yellowness will only intensify. Follow this algorithm:
- Turn off the refrigerator from the network and wait for complete defrosting (if there is ice). In models with
No Frostit is enough to remove the food and wipe off the condensation. - Remove all shelves, drawers and grilles. Soak them in warm water with soda (2 tablespoons per 5 liters) for 15–20 minutes.
- Remove visible dirt with a damp sponge. For greasy stains, use dishwashing detergent (for example, Fairy or Ecover).
- Wipe the rubber door seals with a solution of vinegar (1:1 with water) - this will remove mold and prevent its appearance.
- Check the integrity of the plastic. If there are cracks, do not use abrasive agents - they will aggravate the damage.
☑️ What needs to be done before bleaching
Suitable for door seals special gel for rubber (for example, Top House or Mellerud). Never use chlorine-containing bleaches - they destroy the rubber structure and the seal will lose elasticity.
⚠️ Attention: If your refrigerator is equipped with a system Air Flow or Multi Air Flow (for example, in models Bosch Serie 6), avoid getting liquid into the ventilation holes. This may cause a short circuit the next time you turn it on.
Top 7 ways to whiten the inside of the refrigerator: from folk to professional
The choice of method depends on the degree of yellowing and the type of plastic. We tested 7 methods on refrigerators of different brands (Indesit, Atlant, LG) and identified the most effective ones. Important: before using any product, test it on a small area of plastic. (for example, on the back wall) - some compositions can cause darkening.
| Method | Suitable for | Pros | Cons | Exposure time |
|---|---|---|---|---|
| Hydrogen peroxide 3% | Slight yellowness, ABS plastic | Safe, disinfects | Weak effect on old stains | 10–15 minutes |
| Soda + vinegar | Medium stains, polystyrene | Removes odors, non-toxic | Requires thorough rinsing | 20–30 minutes |
| Toothpaste | Local stains, glossy surfaces | Soft abrasive, brightens | Apply for a long time to large areas | 5-10 minutes |
| Citric acid | Strong yellowness, all types of plastic | Dissolves plaque, whitens | Can damage rubber seals | 15–20 minutes |
| Special bleaches (for example, Cillit Bang) | Advanced cases | Quick results | Aggressive composition, requires hand protection | 5–10 minutes |
Step-by-step instructions for each method
1. Hydrogen peroxide
Mix peroxide with water in a 1:1 ratio. Apply to the walls of the refrigerator with a soft sponge, avoiding the seals. After 10 minutes, wipe with a clean cloth. To enhance the effect, add 1 teaspoon of ammonia. alcohol per 1 glass of solution.
2. Soda + vinegar
Make a paste of soda and water (3:1). Apply to the yellowed areas, then sprinkle with vinegar (it will sizzle). After 5 minutes, rinse with warm water. smells of fish or onionswhich are often absorbed into the plastic.
What to do if there are stains left after baking soda?
If after washing off the soda there are white stains left, wipe the surface with a solution of vinegar (1 tablespoon per 1 liter of water), then wipe dry with a microfiber cloth. with a rag.
3. Toothpaste
Use whitening toothpaste without granules (for example, whitening paste without granules (for example, Colgate Optic White) Apply to yellow spots, rub with a soft-bristled toothbrush. Rinse off after 5. minutes. The method is ideal for door shelves and small areas.
4. Citric acid
Dissolve 2 tbsp of acid in 1 liter of warm water. corners. For rubber seals, use a separate solution (1 teaspoon per 1 liter of water). Citric acid not only whitens, but also removes black mold. If after cleaning there is a lemon smell, put an open pack of soda in the refrigerator for 12 hours - it will neutralize the aroma. data-i="146">What you should not do to bleach a refrigerator: 5 dangerous mistakes black mold.
How not to bleach a refrigerator: 5 dangerous mistakes
Some "folk" tips can irreversibly damage plastic or rubber. Here is what is strictly prohibited:
- 🧼 Chlorine bleach (type "Whiteness") - destroys the structure of the plastic, leaves toxic fumes.
- 🔥 Boiling water - deforms the shelves and can damage the thermostat.
- 🧴 Acetone or solvents - dissolves the protective coating, leaving cloudy spots.
- 🧽 Hard brushes or metal sponges - scratch the surface, dirt accumulates faster in microcracks.
- 🌿 Essential oils (tea tree, eucalyptus) - leave greasy stains, which then turn yellow.
Be especially careful with sealing rubber bands. They cannot be cleaned with products containing more than 10% alcohol - this will lead to cracking. For rubber, use only soap solution or special compounds (for example, Topperr 3104).
⚠️ Attention: In refrigerators with air ionizer (for example, Panasonic NR-B57) you cannot use acidic agents (vinegar, citric acid). They neutralize the effect of the ionizer, and the function will stop working.
How to whiten rubber seals: separate instructions
Seals turn yellow faster than plastic due to constant contact with moisture and temperature changes. To clean them you will need:
- 🧴 Dishwashing gel (no abrasives).
- 🧼 Toothbrush with soft bristles.
- 🍋 Citric acid solution (1 tsp per 1 liter of water).
- 🧴 Silicone grease (for example, WD-40 Specialist) to restore elasticity.
Step-by-step algorithm:
- Wipe the seal with a damp cloth to remove surface dirt.
- Apply dish gel to the toothbrush and clean all the folds of the rubber.
- Rinse with clean water and wipe with a solution of citric acid.
- After drying, apply a thin layer of silicone grease - this will prevent cracking.
If the seal still remains yellow, try whitening pencil for rubber (sold in auto stores). Apply it for 5 minutes, then rinse off. This method is suitable for refrigerator seals Stinol And Biryusa, where rubber is especially susceptible. yellowing.
Prevention of yellowing: how to maintain whiteness for a long time
Even after successful bleaching, yellowness will return in 6-12 months if you do not follow simple rules:
- 🍎 Store food in containers —especially citrus fruits, tomatoes and spices (they release pigments).
- ☀️ Do not place the refrigerator next to a window —UV rays accelerate the oxidation of plastic.
- 🧼 Wash the refrigerator every 2 weeks weak vinegar solution (1 tbsp per 1 liter of water).
- 🌡️ Watch the temperature: in the freezer it should be −18°C, in the main chamber +4°C. Temperature changes destroy the plastic.
- 🔄 Defrost the refrigerator (if not
No Frost) at least once every 3 months.
For additional protection you can use PVC film (sold in rolls) to cover shelves and walls - it prevents plastic contact. with food dyes. The film is easy to wash and replace every 1-2 years.
In refrigerators with antibacterial coating (for example Samsung RB37J5240) it is enough to wipe the walls with a damp cloth once a week. This coating itself prevents the formation of plaque, but does not protect against mechanical contamination.
What to do if nothing helps: radical measures
If the yellowing is deep and cannot be cleaned, there are two options left:
- Painting with special enamel. Use acrylic paint for plastic (for example, Kudo or Plasti DipBefore applying, degrease the surface with alcohol and prime the paint. 2–3 years, but requires careful application.
- Replacement of internal panels. In service centers you can order new walls for refrigerators of popular brands (Atlant, Indesit, BekoCost - from 3,000). up to 8,000 rubles depending on the model.
Before painting, be sure to remove door handles and shelves - this will simplify access to difficult places. If you decide to replace the panels, check with the service whether the warranty will still apply (in some cases, you can repair them yourself). cancels).
⚠️ Attention: In refrigerators with electronic control (for example, LG InstaView) when replacing panels, you may need to re-flash the module. Check with the technician before starting work.
FAQ: Frequently asked questions about bleaching the refrigerator
Is it possible to use fabric bleach (for example, "Vanish")?
No, such bleaches contain optical brightness, which do not remove yellowness, but only mask it. In addition, they can leave a sticky residue on the plastic.
Will a melamine sponge help?
Melamine removes surface stains, but does not bleach deep stains. It can be used for local cleaning (for example, stains). sauces), but not for the entire refrigerator.
How to whiten a refrigerator with stainless steel inside?
For stainless steel, use special polishes (for example, Autosol). a rag, wipe the surface along the metal fibers. Do not use abrasives - they will leave scratches.
How long after bleaching can you turn on the refrigerator?
Minimum time - 2 hours. This is necessary for all chemical vapors to evaporate. If vinegar is used. or ammonia, it is better to wait 4-5 hours.
Why did the plastic become cloudy after cleaning?
This means that the protective coating was damaged (for example, acetone or a hard brush will help to restore the shine polish for plastic (for example, Sonax Plastic Polish).