Modern refrigerators are complex climate systems in which air purity plays no less important role than temperature. Many equipment owners do not even suspect that inside the chamber, often in the upper part or on the back wall, there is a special one responsible for neutralizing unpleasant odors and ethylene. It is this gas that accelerates the ripening and deterioration of vegetables, fruits and herbs, reducing their shelf life by several times. carbon filter, responsible for neutralizing unpleasant odors and ethylene. It is this gas that accelerates the ripening and spoilage of vegetables, fruits and herbs, reducing their shelf life by several times.
Ignoring the maintenance of this unit leads to the fact that the air inside ceases to be renewed, and the products begin to absorb foreign aromas. In addition, an element clogged with dust creates additional resistance for the system fan No Frost, forcing the compressor to work with increased load. This is a direct path to increasing electricity bills and reducing engine life.
In this article we will look in detail at how to determine the type of your filtration system, where to find hidden elements and how to properly clean or replace them. You will learn why certain types of fillers should not be wetted and how often preventative maintenance is required for different models of equipment.
Types of filtration systems in refrigerators
Before taking active steps, you need to understand what kind of design you are dealing with. Manufacturers use different air purification technologies, and the methods of caring for them are radically different. Incorrect determination of the filter type can lead to damage to an expensive component or even damage to the refrigerator itself.
The most common carbon filters, which work on the principle of adsorption. Activated carbon in their composition retains molecules of odorous substances. Such elements can be disposable (require complete replacement) or reusable (allow regeneration by heating or ventilation). They are found in models of brands LG, Samsung, Bosch and others.
The second type is antibacterial coatings based on silver ions or special catalysts. They are often built directly into the plastic housing of the air duct or are a removable cassette with mineral filler. They cannot be washed with water, as this will wash away the active layer. The third option is simple mechanical meshes that trap large dust and lint, which are easily washed under the tap.
⚠️ Attention: Do not try to wash cartridges labeled “Deodorant” or “Carbon” with water unless the instructions clearly indicate that they are reusable. Water can destroy the structure of activated carbon or cause molding of organic fillers inside the case.
To accurately identify your device, it is best to refer to the technical data sheet. The marking and type of consumables used are always indicated there. If the documentation is lost, a visual inspection and searching for the model on the Internet will help determine the strategy for further action.
Where the filter is located: searching for the element
The location of the filter element depends on the layout of the refrigeration chamber and the manufacturer's brand. In most modern models with the system No Frost it is located in the upper part of the refrigerator compartment, often hidden behind a decorative plastic panel. To gain access to it, sometimes it is enough to simply pull the cover towards you, in other cases you will need to unscrew the mounting screws.
In some designs, for example, in a number of models Atlant or Indesit, the filter can be built into the back wall of the camera or located next to the lighting shade. If you don't see any obvious holes or removable blocks, check the evaporator area. Sometimes access to it is possible only after partial disassembly of the internal space, which requires caution.
It is worth mentioning separately drainage holes, which are often confused with air filters, but they have a different function - condensate removal. They are located at the bottom of the rear wall of the refrigerator compartment. Although this is not an air filter, their cleanliness is critical to the proper operation of the system. The blockage here causes puddles to appear on the shelves and bottom of the refrigerator.
If you find an element that looks like a grid cassette, carefully remove it. Pay attention to the fasteners: they should not break if handled carefully. If the plastic has become brittle from time and cold, act especially carefully; you may need to warm your hands first.
Instructions for cleaning the carbon filter
The cleaning process depends on whether your filter is regenerable. If this is an ordinary cassette with coal granules, which the manufacturer does not provide for washing, then “cleaning” consists of restoring its cleaning properties. To do this, the filter is removed and left in the open air (not in the sun) for 24 hours to remove the accumulated odor and moisture.
If the design allows maintenance (for example, it is a metal mesh with carbon coating or a removable reusable cartridge), the algorithm of actions is as follows. First, the element must be carefully removed from large dust. Then you can rinse it with warm water without using aggressive chemicals. Soap or dishwashing detergent can leave an odor, which the coal will then absorb and begin to give off to the products.
To disinfect the mesh elements, it is allowed to use a weak solution of citric acid. This will help remove grease deposits, which often settle on the filter along with dust if the refrigerator is located next to the stove. After washing, the element must dry completely at room temperature before installing it back.
☑️ Checklist for cleaning the filter
Even after high-quality regeneration, it loses its properties. If, after drying and installation, the smell in the refrigerator returns after a couple of days, it means that the adsorbent has completely exhausted its resource and requires replacement with a new original or compatible analogue.
Maintenance of the drainage system
Although the drainage is not technically an air filter, its condition directly affects the hygiene inside the refrigerator. Food particles, mold and mucus get into the condensate drain hole, forming a plug. To clean this assembly you will need soft wire, a brush or a special flexible knitting needle, as well as a blower for washing.
Start with a visual inspection of the hole. If debris is visible, carefully remove it with tweezers. Then insert a flexible knitting needle or wire with a bent end (so as not to damage the plastic of the tube) and clean the channel with progressive movements. Be careful not to pierce the thin walls of the drainage tube, which may be located behind the back wall.
After mechanical cleaning, it is necessary to flush the channel. Fill a bulb or syringe without a needle with warm water and pour it into the hole under pressure. If the water quickly goes into the pan of the compressor compartment (located at the back, at the bottom of the refrigerator), then the system is free. If the water is standing, repeat the cleaning procedure.
| Type of contamination | Cleaning method | Frequency | Tool |
|---|---|---|---|
| Dust and lint | Dry brushing | Once every 3 months | Soft brush |
| Grease deposits | Rinse with warm water | Once every 6 months | Sponge, water |
| Food stopper | Mechanical cleaning | As it appears | Brush, knitting needle |
| Mold | Treatment with an antiseptic | If detected | Chlorhexidine |
To disinfect drainage, you can use a chlorhexidine solution or a weak soda solution. Pour the product into the hole, wait 10-15 minutes, and then rinse thoroughly with clean water. This will kill mold spores, which often cause a musty smell, even if the air filter is clean.
Replacement and disposal of consumables
The average service life of a carbon filter is from 6 to 12 months, depending on the intensity of use of the refrigerator and the number of stored products with a strong odor. When the filter becomes full, it stops working and can itself become a source of unpleasant odors. At this point, replacement is necessary.
When purchasing a new element, pay attention to the article number. Original filters Whirlpool, Electrolux or LG guaranteed to fit in size and fastening elements. However, there are many high-quality analogues on the market that are cheaper. The main thing is that the dimensions and shape of the case match the original.
Is it possible to use activated carbon in tablets?
Yes, this is a popular life hack. If the filter housing allows you to open it and replace the contents, you can pour out the old granules and add new crushed pharmaceutical charcoal. However, the efficiency of such a replacement is lower than the factory one, since the fraction and density of the original carbon are selected specifically for optimal air flow.
Old filters should be disposed of as normal household waste, unless they contain specific chemical fillers. Coal is safe for the environment, but it is better to recycle plastic casings if your region collects the appropriate type of plastic.
⚠️ Attention: When installing a new filter, remove all protective packaging from it, including plastic bags and plugs. A common mistake is installing an element in a package, which blocks air circulation and can lead to overheating of the fan.
Prevention and useful tips
To ensure that the filter lasts longer and the refrigerator always smells fresh, follow simple rules for storing food. All products with a strong odor (fish, smoked meats, opened cans) should be stored in airtight containers. This will reduce the load on the carbon element several times.
Regularly check the expiration dates of products in the door and on the shelves. A spoiled product is the main source of problems that even the most powerful filter cannot cope with. Also, do not put hot foods in the refrigerator: steam condenses, creating an ideal environment for bacteria and clogging the filter pores with moisture.
If you notice that the refrigerator has begun to hum louder than usual, check the filter. An element clogged with dust creates aerodynamic resistance, forcing the fan to work at its limit. Timely cleaning often solves the problem of noise without calling a specialist.
In conclusion, it is worth noting that caring for the filtration system takes no more than 15-20 minutes, but the result is felt immediately. Fresh air inside the chambers preserves the taste of the food, and you get rid of the need to constantly look for the source of the unpleasant odor.
How often should you change the carbon filter in the refrigerator?
Manufacturers recommend changing the filter every 6-12 months. However, the frequency depends on the load on the refrigerator. If you store a lot of products with a strong smell, it is better to replace them every 4-5 months. If the refrigerator is rarely used, the filter can last up to 1.5 years.
Can the filter be washed in a washing machine?
Absolutely not. The aggressive mechanical impact of the drum and the chemistry of the washing powder will destroy the structure of the activated carbon and the plastic case. Washing will make the filter useless.
What to do if the smell remains after cleaning?
If washing and drying did not help, it means that the adsorbent resource has been exhausted. Coal has a limit of saturation with odor molecules. In this case, only completely replacing the cartridge with a new one will help. Also check if there is a source of odor among the products or in the drainage hole.
Where to buy an original filter for a refrigerator?
Original consumables can be ordered at the brand’s authorized service centers, in large household appliance stores or on the official websites of manufacturers. Also, compatible analogs are often found in spare parts stores for household appliances and on marketplaces.
Does a dirty filter affect the operation of the refrigerator?
Yes, it does. A clogged filter interferes with air circulation in the No Frost system. This leads to uneven cooling of the chambers, the formation of ice on the evaporator and increased load on the compressor, which shortens the service life of the unit.