How old is my Fujitsu mini split?

Serial number age decoder for Fujitsu mini splits: 1 format era, the decode rule in plain English, transcribed tables, and the official lookup.

Fujitsu's official lookup at access.fujitsugeneral.com returns warranty / registration lookup.

Format eras

era not stated UNSOURCED
AAA######

How to read the serial

era not stated formatUNSOURCED

Shape AAA###### · example LTN019205 · confidence low

Documented but not evaluated by the decoder: no pattern (no date encoded, or format unknown).

Trap: No documented date encoding. Shape is 3 letters + 6 digits (older: 1 letter + 6 digits, e.g. C001294). Use the official lookup or Fujitsu service line.

Where the data plate is on a mini split

Two plates: one on the side of the outdoor unit, one on the indoor head (lift the front cover or look under the unit). The two serials differ; decode the outdoor unit for the system age.

General guidance, not brand-specific: the owner's manual or the installer can point to the exact spot. See the data plate guide.

Official lookup: the authority

Open the official Fujitsu lookup takes serial number; returns warranty / registration lookup; URL verified live

This site is a reference built from published tables. The manufacturer's own lookup wins whenever the two disagree.

What we could not confirm

The era not stated format has no source we could check; it is shown for completeness only.
The era not stated format is documented but not decodable here: no pattern (no date encoded, or format unknown).
Manufacture date is NOT encoded in the serial (per Fujitsu, relayed by building-center). Official serial lookup at access.fujitsugeneral.com (200, behind a Turnstile human check) returns manufacture + install date for registered units; otherwise call Fujitsu service (866) 952-8324. Building-center suspects the 3-letter prefix encodes the year but has not cracked it: LTN019205=2014, KRN016785=2013, LUN038094=2014, FTN012306=2017, KSN021789=2014, EXN029093/EXA028248=2019, AEN008487=2016, DDN002064=2006, C001294=mid-1990s.