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How to Decode an LG Appliance Serial Number (The Year-Month Format Explained)

ApplianceIQ Editorial·May 4, 2026·6 min read
LG 404KAEN12345 Apr 2024 DECODED MANUFACTURING DATE
Quick answer

LG appliance serials begin with three numerical characters: the first is the last digit of the year (so a serial starting "5..." was made in 2005, 2015, or 2025 — context-dependent), and the next two digits are the two-digit month (01–12). Because LG omits the decade, you must use the model number, factory code, or physical condition to lock the decade. This is the one rule everyone gets wrong.

The LG Three-Character Date Prefix

LG major appliances encode the manufacturing date in the first three characters of the serial number:

  • Character 1: Last digit of the year (0–9)
  • Characters 2–3: Two-digit month (01–12)

Example: Serial starting 603 = year ending in 6 + March. Could be March 2006, March 2016, or March 2026.

10 yrs
LG year codes repeat on a 10-year cycle — the tightest cycle of any major appliance brand, making decade disambiguation more important.
Source: HomeSpy LG Documentation

Why the Decade Is Missing

LG's encoding system was designed in an era when appliance lifespans meant a 10-year repeat cycle was considered sufficient. In practice, it means every LG serial number is genuinely ambiguous without additional context — a serial starting "503" is factually valid for March 2005, March 2015, or March 2025.

This is not a gap in the documentation; it is a structural feature of LG's encoding. Every guide that gives you a single year for an LG serial without explaining decade disambiguation is giving you incomplete information.

Four Ways to Resolve the Decade

  1. Model number design year: LG model numbers often contain a suffix letter or number that corresponds to the model year. For example, DLEX7600WE — the "WE" suffix and "7600" series places this in the 2016–2018 range.
  2. Factory code letters (positions 4–5): KW = Korea Changwon plant (dominant 2000–2016); PN = China; newer 2020+ US-assembled units may show different codes.
  3. Physical condition and styling: LG's design language changed significantly between decades. A front-load washer from 2006 has different styling cues than one from 2016.
  4. ApplianceIQ: Our decoder cross-references model + serial to resolve decade automatically using the model series database.

Worked Examples

Example 1 — Front-load washer: Serial 603TAGH22222

  • Characters 1–3: 6, 03 = year digit 6, month March
  • Characters 4–5: TA = factory code (Korea, Changwon, older variant)
  • Model WM2016CW introduced ~2006: March 2006.

Example 2 — Dryer DLEX7600WE: Serial 603KWWZ73713

  • Characters 1–3: 6, 03 = year digit 6, month March
  • Characters 4–5: KW = Korea Changwon (2016 era plant code)
  • Model design year 2016: March 2016.
2015–2025
LG decade disambiguation: the same serial prefix "5" is valid for 2005, 2015, or 2025. Model number cross-check is mandatory for accurate dating.
Source: tab-tv.com LG Serial Documentation

Factory Code Letters (Positions 4–5)

LG factory code reference
CodeFactoryEra
KWChangwon, South KoreaDominant 2000–2018
PNChina (Nanjing or Shenyang)2008–present
VWUSA (Clarksville, TN)2019–present (washers)

LG By Category — Where to Find the Label

  • Refrigerators: Top-right interior wall of the fresh-food section, or behind the vegetable crisper
  • Front-load washers: Door rim label (visible with door open)
  • Dryers: Inside the drum lip, or on the back panel
  • Dishwashers: Inside the door, upper edge of the tub

More from the Serial Decoding Hub

Frequently Asked Questions

My LG serial starts with a letter, not a number — is it wrong?
Older models or non-major-appliance product lines (HVAC, etc.) may use a different format. Confirm you have the appliance serial, not a TV or phone serial.
Could the same serial be valid for both 2009 and 2019?
Yes — that is the core structural limitation of LG's encoding. Use the model number or factory code to resolve the decade.
Where is the LG washer serial label?
On the door rim (visible with door open) for front-loaders, or on the back panel for top-loaders.
Is the LG model number useful for dating?
Yes — it's actually more useful than the serial for decade disambiguation. LG model design years are encoded in the model suffix letters.
Does ApplianceIQ handle LG decade disambiguation automatically?
Yes — ApplianceIQ cross-references the model series against its product database to determine the correct decade, resolving the ambiguity automatically.
GE DR123456 Apr 2018 DECODED MANUFACTURING DATE