LG Appliance Age
LG puts the build date at the very start of the serial number: one digit for the year and two for the month. The catch is that the digit carries no decade, so the decoder lists every year it could be.
Part of the appliance age lookup
Serial number age lookup
Where to find the serial number
LG prints the model and serial numbers on a rating label. The usual places are:
- Refrigerator: inside the fresh-food compartment on a side wall near the top, and sometimes on the back of the unit.
- Washer and dryer: on the door frame or the inside of the door opening, or on the back of the cabinet.
- Dishwasher: along the edge of the door or on the tub frame.
- Range: on the frame of the oven door or behind the storage drawer.
The serial number is the line labelled “SERIAL” or “S/N”. It is usually twelve characters long and starts with three digits.
How the LG code works
The three digits at the start are a date:
| Characters | What they mean | Example 503… |
|---|---|---|
| 1st digit | Last digit of the year of manufacture | 5 (2005, 2015 or 2025) |
| 2nd and 3rd digits | Month of manufacture, 01 to 12 | 03 (March) |
| The rest | Plant, line and sequence | Not used by the decoder |
- Year
- Month
- Not part of the date
Worked examples
| Serial | Built |
|---|---|
| 503KWXY12345 | March 2025 or March 2015, March 2005 |
| 711ABCD54321 | November 2017 or November 2007 |
| 612KWXY12345 | December 2016 or December 2006 |
Example serials are made up to show the format; they don't belong to real units.
Reading an example
A serial that starts with 811 was built in November of a year that ends in 8. That is November 2008 or November 2018 (November 2028 has not happened yet, and the decoder never reports a date in the future), so it shows November 2018 first and November 2008 as the alternative.
What this decoder does not know
LG’s support site states the three-digit layout, with one digit for the year and two for the month, on its help page for air conditioners and describes it as how LG serial numbers start. It does not give a full table for refrigerators, washers and the rest, and it does not say how to choose between decades. The appliance rule on this page therefore rests on that statement plus trade references that agree with it, so the decoder still carries a “being verified” flag. We start the decade search at the year 2000. If your appliance is older than that, or its serial starts with letters instead of three digits, the decoder will say it does not recognize the format.
Choosing the decade
A year digit leaves two or three candidates. These checks usually settle it in a minute:
- Printed date. Some labels print a manufacture date next to the serial. Use that.
- Purchase records. A receipt, a delivery slip, a credit-card statement or the warranty registration email will give you the year to the nearest month.
- Features. A refrigerator with a door-in-door panel, Wi-Fi or an app, or a washer with a touch display and smartphone control, is recent. A unit with a plain mechanical dial and no connectivity is likelier to be from the earlier candidate.
- The house. If the appliance came with the home, the year the home was built or last renovated is an upper limit.
What the age means for an LG appliance
LG appliances follow the same planning numbers as other makes. The NAHB’s 2007 study of home components, which we use for all appliance lifespans, gives the typical standard refrigerator about 13 years, a dryer 13, a washer 10, a dishwasher 9, an electric range 13 and a gas range 15. Those are for first-owner use and are not guarantees.
Newer appliances add electronics. A control board or a sensor can fail long before the drum or compressor does, and a repair quote on a ten-year-old connected washer or refrigerator is more likely to be for a board than for a mechanical part. If a board repair is more than half the price of a comparable new machine, replacement usually makes more sense. The guides on refrigerators, washers, dryers and dishwashers cover the repair-or-replace decision in more detail.
If the serial is not recognized
- Check that you copied the serial and not the model number. LG model numbers also begin with letters.
- Count the characters. A serial much shorter than ten characters or longer than thirteen will not match.
- Watch for lookalikes: zero and the letter O, one and the letter I.
- Look for a printed manufacture date and enter it in the tool above.
- If the serial starts with letters, it is either not an LG appliance serial or in a format we have not verified. Send it to us with the wrong-result form so that we can look at it.
Getting the exact date
For a warranty or insurance claim, contact LG customer support with the model and serial number. They can state the manufacture date, which the serial alone only estimates. For planning, such as deciding whether to budget for a replacement, the decoded month and year are accurate enough.
Frequently asked questions
How do I tell how old my LG appliance is?
Read the first three digits of the serial number. The first digit is the last digit of the year of manufacture, and the next two digits are the month, from 01 to 12. A serial starting 503 was built in March of a year ending in 5.
Why does the tool show more than one year for my LG?
The serial holds only the last digit of the year, so 5 can mean 2005, 2015 or 2025. The decoder shows the most recent year that has already happened and lists the earlier ones. Your purchase receipt, the unit's features and its warranty paperwork settle which decade is right.
Is the first digit of an LG serial always the year?
For LG appliance serials that start with three digits, that is the layout LG describes on its own support site, where it says LG serial numbers start with three digits, the first for the year and the next two for the month. Trade references say the same for appliances. LG gives no year-to-decade key, so if a label prints a manufacture date, trust that over the decoded result.
What do the letters and digits after the first three mean?
They identify the plant, the line and the production sequence. The decoder ignores them.
Where can I get an official answer from LG?
LG customer support can look up a build date from the model and serial number. That is the route to take if you need the date for a warranty or insurance claim, since our decoder gives an estimate.
Does this apply to LG air conditioners and HVAC equipment?
This page covers LG kitchen and laundry appliances. LG heating and cooling equipment is a different product line, and we have not verified its serial format.
Sources and accuracy
The LG appliances decoder is built from these references and cross-checked between them. Facts are restated in our own words; any mistakes are ours.
- LG support: locating the model/serial number tag (serial starts with 3 digits, year digit then 2-digit month)
- ServiceMag: how to read your appliance model and serial number, brand by brand (2026)
- HomeSpy: LG serial number format
Status: being verified against real data plates. Rules last reviewed 2026-10-18; page updated 2026-11-10. Not affiliated with LG appliances. Report a wrong result.
Part of the appliance age lookup
This page covers one brand. For all refrigerator, washer, dryer, dishwasher and range brands, go to the appliance age lookup.