Almost every owner who plans to sell equipment, issue a warranty, or order spare parts is faced with the need to find out the exact production date of a household appliance. Often buyers in the secondary market want to make sure that age of the unit corresponds to what the seller stated, and does not hide ten years of use. Manufacturers do not indicate the production date in the usual format DD.MM.YYYY in a visible place, preferring to encode this information in long alphanumeric sequences.
Finding the necessary data can turn into a real quest, since the location of the information sticker and the encryption logic serial number are radically different for different brands. In some cases, just looking at the nameplate is enough to understand when the device came off the assembly line; in others, you will need a calculator and knowledge of the specific coding of a particular plant. Understanding how to decipher this data will help you avoid buying an “old” product at the price of a new one or correctly calculate the remaining life of the compressor.
In this article we will analyze in detail where to look for the factory markings, how to read the codes of popular manufacturers and why year of manufacture may differ from the year of purchase, which is critical for correct countdown of the warranty period. We will collect the latest decoding algorithms for dozens of brands so that you can quickly get reliable information about your device.
Location of the manufacturer's markings on the case
The first step in finding information about the production date is to locate the manufacturer's sticker, which is technically called a nameplate. Most often, manufacturers place this sticker on the inside wall of the refrigerator, usually in the upper left or right corner, so that it is easy to find when the door is open. However, if there is nothing on the internal walls, you should carefully inspect the base part of the unit from the front or look at the rear wall of the case, where technical documentation and nameplates are often attached.
It is important not to confuse the sticker with the production date and the sticker with energy consumption class or advertising information about functions that are usually glued to the facade. The label you are looking for contains technical information: model, voltage, refrigerant, weight and, most importantly, serial number (S/N). It is in this sequence of characters, and not in the date of sale, that the moment the device left the factory is encrypted.
Some built-in models have access to the back wall or base can be difficult, so manufacturers often duplicate the nameplate on the end of the door or even on the inside of the door itself. If you find several stickers with different dates, focus on the one where it is indicated serial number, since the dates on the box or waybill may relate to components or packaging.
General logic for decoding serial numbers
Despite the huge variety of brands, the logic for encoding the production date in the serial number, as a rule, obeys several standard algorithms. Most often, the first two digits after the letter prefix indicate the year, and the next two indicate the week or month of production. However, there are also more complex schemes where the year is encoded with one letter or the last digit of the decade, which requires knowledge of the specifics of a particular manufacturer.
To read the code correctly, you need to understand that serial number (Serial Number) and model number (Model Number) are different things. The model number may also contain numbers indicating the year the series was developed, but they do not reflect the date of assembly of a particular example. Therefore, always look for the S/N, SN or Factory No field, where the information you are looking for is hidden.
Why may the dates on parts be different?
The compressor, door or electronic module could have been produced in a few weeks or even months before final assembly of the refrigerator. Therefore, the dates on individual units may differ slightly from the date on the general nameplate.
It is worth considering that coding algorithms may vary within the same brand, depending on the manufacturing plant. For example, refrigerators of one brand assembled in Poland may have one designation system, while those assembled in Russia or China may have another. Therefore, if the standard decoding does not give a logical result (for example, the year 99 or 00 in 2026), it is worth checking alternative options for reading the code.
Deciphering the codes of European and Russian brands
European manufacturers, such like Bosch, Siemens, Liebherr, as well as Russian brands like Indesit and Hotpoint-Ariston, often use a fairly transparent coding system. Most of them have the first two digits of the serial number indicating the year of manufacture, and the next two indicating the week. For example, if the number begins with 503..., then the device was manufactured in 2015, in the 3rd week. For models released after 2020, accordingly, the numbers will be 20..., 21... and so on.
However, the company Bosch i Siemens (BSH Group) has a nuance: 20 years are often added to the year of production if we are talking about modern models, but in older series (up to 2000s) the first digit could indicate the decade. U Indesit i Ariston (Whirlpool company) in the first 7 characters of the code, the 5th and 6th digits often indicate the year and month. For example, code ...1905... will mean May 2019.
| Brand | Position in S/N | Format | Example (2023) |
|---|---|---|---|
| Bosch / Siemens | 1-2 digits | YY (year) | 23456789 (2023) |
| Indesit / Ariston | 5-6 digits | YYMM | FC122305... (May 2023) |
| Liebherr | 9-10 digits | YY | ...23... (2023) |
| Beko | 1-2 digits | YY | 2312345 (2023) |
When deciphering the codes Beko you should be careful: their first two digits are the year, and the next two are a week. But sometimes there is a format where the year is indicated by one letter at the beginning of the code, although this is rather an exception for older models. If you see a code starting with 23, it is almost guaranteed to be produced in 2023.
Specifics of labeling of Asian manufacturers
Asian giants such as Samsung, LG, Haier i Atlant (although this is a Belarusian brand, the logic is often similar to Asian due to the localization of production), they use their own unique systems. Y Samsung the first two digits of the serial number are the year, the next two are the month, then two are the day. For example, code 230815-ABCD means that the refrigerator was assembled on August 15, 2023. This is one of the most convenient systems for the consumer.
The company LG uses alphanumeric coding, which can confuse an unprepared person. The first two digits indicate the year, but the letter following them indicates the month of production (A - January, B - February, ..., L - December, excluding I). For example, 13L... means December 2013. It is important not to confuse this letter with the designation of the color or type of compressor, which may follow.
- 📅 Samsung: Format YYMMDD at the beginning of the number (210520 = May 20, 2021).
- 📅 LG: Two digits of the year + letter of the month (A-L) at the beginning or middle of the code.
- 📅 Haier: The first 8 digits often contain the date in YYMMDD format, but can be shifted.
- 📅 Atlant: An 11-digit code is often used, where the 5th and 6th digits are the year, the 7th and 8th are the month.
What does the letter "S" mean in the LG code?
In some cases, the letter "S" at the beginning or end of the LG code may indicate the manufacturing plant (for example, Russia or China), but not the date.
Technology Haier is characterized by the use of long numerical sequences, where the date you need to look for it by trial, although most often it is also placed at the beginning of the line. If your refrigerator is assembled at a factory in Russia under the brand Haier, the logic can be simplified to the YYMM standard. Always check that the month does not exceed 12, and the day does not exceed 31, this will help weed out incorrect decoding options.
Encoding features of Candy, Electrolux and others
Brands included in the concern Electrolux (including Zanussi, AEG, Kuppersberg), often use an 11-digit serial number. In it, the first two digits are the year, and the next two are the week. For example, 1905... means the 5th week of 2019. However, for older models or specific lines, the first digit could indicate the year (9 - 2009, 0 - 2010, 1 - 2011), which requires care when analyzing used equipment.
Refrigerators Candy (and Hotpoint in some regions) have their own unique 16-digit code. The first two digits are the year, the next two are the week. But there is an alternative option for older models, where the year is encrypted in letters or one number. For example, a letter J can correspond to 2018, K — 2019, L - 2020 and so on, continuing the alphabet sequence.
☑️ Checking the correctness of the date
⚠️ Attention: With brands Electrolux i Zanussi in the period from 2010 to 2012, there was confusion in the numbering of weeks. If the date falls at the junction of years (for example, the 53rd week), check the adjacent values so as not to be mistaken for the year.
It is also worth mentioning the brand Stinol (not currently produced, but many are in use), where the date was often written in clear text or in the DDMMYY format at the end of the line. If you are the owner of a rare Stinol, look for numbers similar to the date at the end of the nameplate. For modern models produced at the same facilities (for example, Indesit), the rules of the Whirlpool concern apply.
The influence of assembly location on labeling
The globalization of production has led to the fact that the same brand can have different plants in different countries, and each plant can use its own labeling standards. For example, refrigerators Samsungassembled in Russia (Kaluga region) may have markings similar to European ones, while models from Vietnam or Thailand may have their own Asian markings. This is especially true for brands that have only recently localized production.
The country of origin is often indicated as a separate line on the nameplate (Made in Poland, Made in Russia, Made in China). Knowing the country, you can narrow down the search for a decryption algorithm. For example, for equipment Bosch Russian assembly is characterized by the European format (the first two digits are the year), and for Chinese assemblies of some other brands the YYMMDD format can be used in its entirety.
- 🌍 Russia/CIS: The simplified digital format YYMM or YYMMDD is often used.
- 🌍 Europe (Poland, Germany): Strict adherence to brand standards, often a week of production.
- 🌍 Asia (China, Thailand): Variations with letter designations of months are possible.
It is important to understand that the localization of the assembly does not always change the logo, but it changes the “handwriting” of the engineers who applied the markings. Therefore, if the standard decoding for the brand does not work, try to apply the logic specific to the country indicated in the column Country of Origin.
Typical errors when determining the age of a refrigerator
One of the most common errors is confusion between the year of manufacture of the model and the year of production of a particular instance. The product line may be developed in 2015, but the particular refrigerator in your kitchen may be released in 2023. You need to focus specifically on the serial number of a specific device, and not on general data about the series on the Internet.
Another mistake is ignoring the month of production. If you buy a refrigerator in early 2026, and it was manufactured in December 2022, it is technically over a year old. This can be critical for the guarantee if the period is counted not from the moment of purchase (according to the receipt), but from the moment of production (which happens when the receipt is lost). A difference of one and a half years for complex equipment is a significant service life.
⚠️ Attention: When purchasing used equipment, always check the date on the nameplate with the date on the warranty card. If the difference is more than 2-3 months without explanation (for example, long-term storage in a warehouse), this may indicate a refurbished device or a “display” sample.
Also, users often try to find the year in the model number (Model No). For example, in the model RL-34 numbers 34 can mean volume or series, but not year. An attempt to decipher the model number as a production date almost always leads to erroneous conclusions. Serial number is the only reliable source of information about age.
Frequently asked questions (FAQ)
Is it possible to find out the year of manufacture of a refrigerator without nameplate?
Without a factory sticker or documents (receipt, warranty card, box), it is almost impossible to determine the exact year of manufacture. Internal components (compressor, board) may have been replaced or have different dates from the main body assembly date. In extreme cases, you can contact the service center with photographs of internal components, but this will not give a 100% guarantee.
Does the production date affect the service life of the refrigerator?
Yes, it does indirectly. The service life is counted from the moment of use. If a refrigerator has been in a warehouse for 3 years, its lifespan has decreased by this time, even if it did not work. In addition, older models (produced 2010-2015) may have less energy efficient compressors compared to models 2023-2026.
What to do if the date in the serial number indicates the future?
If the decoding shows, for example, 2026, and now it is 2026, then You have incorrectly defined the encoding format for this brand. Try shifting the positions of the numbers or using an alternative algorithm (for example, counting the week rather than the year, or vice versa). Errors in factory markings are extremely rare.
Is the warranty counted from the date of issue or purchase?
Officially, the warranty is counted from the date of purchase, confirmed by a receipt. However, if the receipt is lost, many service centers and stores count the warranty period from the production date indicated in the serial number, adding 3 months to it (for storage and logistics). Therefore, knowing the issue date is critically important in case of loss of documents.