How to read LG heating and cooling serial numbers

Reading it yourself

• Twelve characters that start with three digits. The first digit is the last digit of the year, and the next two are the month. The year digit repeats every ten years, so check the date printed on the label too.

  Example: 407HAVN79423 was made in July 2014 or July 2024.

This is the date the unit was made. It was usually installed soon after, but it can be later. If a serial doesn’t fit any of these patterns, look on the label for a printed manufacture date.

Sources

Checked in October 2026.

• Locating the model and serial number tag on air conditioners, LG Canada
• LG HVAC age, Building Intelligence Center