Determining the exact age of household appliances is a task that every owner faces when it is necessary to repair, purchase spare parts or estimate the residual value of the device before selling. Often the stickers on the body get lost, fade or come off completely, leaving the user alone with the question of how to find out what year his refrigerator is. This is not just idle curiosity, but a technical necessity, because the life of the compressor, the type of refrigerant and the compatibility of electronic modules directly depend on the date of assembly.
Modern manufacturers use complex coding systems, where information about the production date is “hidden” in a long line of the serial number (S/N). Serial number is a unique identifier assigned to each device at the factory. Unlike the model number, which is the same for the entire batch, the serial code is individual and carries encrypted data about the year, month and even day of production, as well as the manufacturer. Understanding the logic of these codes allows you to restore the history of the device even in the absence of documentation.
In this article we will analyze in detail the decryption algorithms for the most popular brands on the market. You will learn to find hidden markings, correctly interpret alphanumeric combinations, and avoid common mistakes when determining the age of equipment. Possession of this information will help you more accurately diagnose faults and select compatible components.
Where to look for the serial number and factory markings
The first step in the identification process is to find a nameplate - a special sticker or metal plate with technical information. The location of the label depends on the brand, model and year of manufacture of the refrigerator. Manufacturers often change placement standards, so several locations need to be inspected. Most often, the marking is located on the inside wall of the refrigerator compartment, usually on the left or right, at eye level or slightly below.
If there is no sticker inside the chamber, carefully inspect the back wall of the case. However, it is worth considering that the information on the back panel may be applied with paint, which will wear off over time, or the sticker may be damaged during transportation. In some models of built-in appliances, the nameplate is placed at the end of the door or even on the plinth below, where you need to look with a flashlight.
⚠️ Attention: Never use sharp objects (knife, screwdriver) to scrape dirt from the sticker if it is dirty. Aggressive cleaning can damage the protective layer and make the barcode or some of the numbers unreadable. Use a soft cloth and a little alcohol.
On the sticker itself you are interested in the margins Serial Number, S/N, No. or Factory No. It is this long combination of letters and numbers that contains the desired date. Also pay attention to the field Model or Mod —sometimes the year is encrypted in the model range, especially for equipment from Asian manufacturers. Make sure you are reading the serial number and not the lot number or part number.
Specifics of labeling of Bosch and Siemens refrigerators
The German brands Bosch and Siemens (BSH concern) use one of the most logical, but requiring care, coding systems. In the serial number of these refrigerators, the production date is usually encrypted in the first four characters. However, it is important not to confuse them with the factory code. The first two digits often indicate the manufacturer, but the next two (third and fourth positions) or a combination of letters may indicate the year.
To accurately determine the year of manufacture in Bosch technology, a letter designation is often used that follows the digital factory code. Each letter corresponds to a specific year in the ten-year cycle. For example, the letter "A" could mean 2010 or 2020, and "B" could mean 2011 or 2021, respectively. Without knowing the exact decade, you can be mistaken by 10 years, so it is important to compare the code with the appearance of the model and the year the series went on sale.
Let's consider an example of decoding. If the serial number begins with FD 908..., then "FD" is the Freiberg plant code. Do the numbers "90" indicate August (08) 2009 or 2019? Here you need to look for the following signs. Often the month and year are duplicated in the form of a separate code F-No (Fabrication Number), which can be found in the service menu or on a separate tag next to the main nameplate. In F-No, the first two digits are the year, the next two are the month.
- 🔍 Look for the code F-No on an additional narrow sticker - there the date is often written in clear text (for example, 09/15 - September 2015).
- 🔍 Pay attention to the letter index after factory numbers: Y=2000, A=2010, B=2011, C=2012, D=2013, E=2014, F=2015, G=2016, H=2017, J=2018, K=2019, L=2020.
- 🔍 Remember that Siemens rules may differ slightly in depending on the year of manufacture, so double-checking by F-No is required.
Why is there no number 0 for the month in the Bosch code?
In the month coding, September is indicated by the number 9, October by the letter A, November by B, December by C. This is done to maintain a fixed code length, but often confuses users expecting the number 10, 11, 12.
How to decipher the age of LG and Samsung refrigerators
Korean giants LG and Samsung apply similar principles, where the first characters of the serial number play a key role. For LG, the serial number usually starts with three characters indicating the manufacturer, followed by the date. In older models (before 2010), the year could be indicated by a single digit (for example, 9 - 2009), which created confusion when changing the decade. Modern models use a letter designation of the year.
At Samsung the situation is even more standardized. The serial number often begins with two letters identifying the plant, followed by two digits for the year and two digits for the month. For example, the code MA15... will mean that the refrigerator was released in 2015 (digits 15) in October (digit A, if hex encoding is used, or simply month 10). However, in recent models, Samsung has switched to more complex alphabetical codes for the year of manufacture to avoid confusion after 2020.
It is important to note that LG sometimes has a situation where the year is indicated by the last letter in the first group of characters. For example, in the code 608KWEU he letter "K" may indicate the year of manufacture 2019. To accurately decipher such cases, it is better to use official tables of letters corresponding to years, as they may change.
⚠️ Attention: For Samsung models released after 2020, the year encoding may have changed. If you see a letter that, according to old tables, means 2010, but the refrigerator is clearly new, look for current decoding tables for the current decade.
For easy comparison of the main LG and Samsung codes, here is an approximate correspondence table (relevant for most models of the last 10 years):
| Brand | Position in S/N | Designation of the year | Designation of the month |
|---|---|---|---|
| LG | 4th character | Letter (A=2010, B=2011... K=2020) | 2 digits (01-12) |
| Samsung | 3-4 characters | Numbers (19=2019) or letter | 2 numbers or letter (A=10, B=11, C=12) |
| Samsung (new) | 3rd character | Letter (depending on the decade) | Next 2 characters |
Determination of the production date of Indesit, Ariston and Whirlpool
Appliances under the Indesit, Ariston and Whirlpool brands (often produced in the same factories) have their own unique system. Here the key element is service number, which may differ from the serial one embossed on the nameplate. It often starts with two letters. The first letter indicates the year of manufacture, and the second - the month. However, this system works cyclically, repeating itself every few years.
For example, for Whirlpool, the letter “A” can mean 2010, and after a cycle - 2020. To understand what decade we are talking about, you need to know the year the production of a specific model began or look at other indirect signs (design, presence of an inverter compressor, type refrigerant). In some cases, the year is indicated by the first two digits after the letter prefix.
Particular attention should be paid to refrigerators assembled in Russia at the factories of these concerns. Their encoding can be adapted to local marking standards, where the year and month are sometimes placed in a separate column Date of manufacture explicitly, without encryption. Look for lines with the date in the format DD.MM.YYYY.
- 🔍 For Ariston and Indesit, look for a 2-letter code: the first is the year, the second is the month (A=January, B=February... L=December, but there may be gaps).
- 🔍 Whirlpool often uses a 16-digit serial number, where the 4th and 5th characters can indicate the year and week of production.
- 🔍 Check for a separate sticker with a QR code - by scanning it with your smartphone, you can sometimes get a direct link to the product card with the release date.
Secrets of labeling Liebherr and ATLANT refrigerators
The German brand Liebherr is famous for its pedantry, and its labeling system is no exception. The Liebherr factory sticker almost always contains a separate field Fert.-Nr. (production number) or simply a date in the format TT.MM.JJ (Day.Month.Year). If there is no such obvious date, look at the serial number: the first two digits often indicate the week of production, the next two the year. For example, 3519 at the beginning of the code means the 35th week of 2019.
The Belarusian brand ATLANT uses a simpler system, typical for the post-Soviet space. The serial number, which is usually located on the back or inside the camera, often has the year of manufacture encoded in the first two or three digits. For example, in the number 700612345 the numbers "06" may mean 2006. However, in new models (after 2010), the encoding has changed: the year can be indicated with one number (6 - 2016) or a letter.
ATLANT is also characterized by the presence of a product passport, pasted inside the refrigerator compartment or included in the kit. In this passport, the date of issue is duplicated with an Quality Control Department stamp, which is the most reliable source of information if the sticker on the case is damaged.
☑️ Checking the data before purchasing spare parts
What to do if the sticker is lost or unreadable
The situation when the factory label is completely destroyed by time, aggressive chemicals or mechanical stress, it is not uncommon. In this case, it is too early to despair. There are several ways to indirectly determine age. The first and most reliable is document search. The warranty card, instructions or purchase receipt always indicates the date of sale or the date the warranty was issued, which allows you to set a lower limit for the age of the refrigerator.
The second method is to analyze the design features and components. For example, if your refrigerator uses refrigerant R134a, it was definitely produced after the mid-90s (after the ban on R12 freon). If the compressor is inverter and not linear, the model is most likely newer than 2005-2010. The presence of a display on the door, a No Frost system of a certain generation, also narrows the time frame.
The third, most technically complex method is connecting to the service menu or reading data from the control board. Many modern refrigerators store the date of first use or production date in the controller's memory. To access this data, special diagnostic equipment or button combinations are required, which are individual for each model.
⚠️ Attempts to enter the service menu without accurate knowledge of the codes for your model may result in a factory reset or locking of the control panel. Use this method only if you are confident in your actions.
You can also try contacting the brand's official customer service, naming the model and describing the appearance of the device. Service center databases often contain information about the years of manufacture of specific modifications. If you are planning a serious repair, the technician can read information directly from the memory chip during diagnostics.
Why is it important to know the exact year of manufacture
Knowing the exact age of the refrigerator is necessary not only to satisfy curiosity. When selecting spare parts such as thermostats, start relays, compressors or electronic modules, the year of manufacture is a critical parameter. Over the course of 10 years of production, the same refrigerator model could have gone through 3-4 upgrades, and parts from the 2010 version may not physically fit the 2018 version.
In addition, age affects efficiency and safety. Older models consume significantly more electricity (class A or even B by modern standards versus A++ and A+++ for new ones). Also, very old refrigerators (before 2000) may use flammable refrigerants or freon, which destroys the ozone layer, which is important to consider when recycling.
When selling used equipment, an honest indication of the year of manufacture increases buyer confidence. An experienced technician or an attentive buyer who checks the code will not be able to hide the real age by passing off a 2010 refrigerator as a 2015 model. This may cause the product to be returned or a conflict.
Is it possible to find out the year of manufacture by the refrigerator model?
Partly possible. The model number often contains a year or series code. For example, in the title Indesit C 138 G the number may indicate a series released in a certain period. However, the model has been produced for years, so only the serial number, not the model, will give the exact date (month and year).
What to do if the code indicates 2026, and now it is 2026?
This is normal for equipment produced at the end of the year. Manufacturers often label products released in November-December as the following calendar year, as they are intended for sales in the new season. This is not a sign of a fake or an error.
Does the country of assembly affect the date encoding?
Yes, it does. The same brand (for example, Bosch) can use different factories in Germany, Poland, Turkey or Russia. Each plant may have its own marking standards, although the general logic of the brand is usually maintained. Always check the tables for a specific manufacturer.