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How old is my Luxaire unit?

Luxaire is part of Bosch Home Comfort (ex JCI / York). 4 serial formats sourced across central air conditioner, heat pump, furnace.

Serial number decoder for Luxaire

Serial no.

Type the serial from the data plate, not the model number. Nothing is sent anywhere; the tables are in this page.

Format example: W0K5896070

Luxaire air conditioner serial numbers in the 2004 to present format encode the year as digit 2 + digit 4 concatenated (0+5 = 2005) and the month as letter 3 (table below) (source: building-center.org).
Example: serial W0K5896070 decodes to September 2005.
Luxaire air conditioner serial numbers in the 1971 to 2004 format encode the year as letter 3 via 21-letter table (table below) and the month as letter 2 (A-N, I/J skipped like style 1) (source: building-center.org).
Example: serial WAKM011379 decodes to 1980 or 2001 (January).
The 1971 to 2004 format is ambiguous: Letters A-N repeat (1971-1984 vs 1992-2004): 21-year cycle. Some serials carry a parenthesized leading letter e.g. (S)EBHM062202 - ignore it. Style ran to Oct 2004, so 2004 has BOTH styles.
Luxaire air conditioner serial numbers in the era not stated format encode the year as digits 1-2 (YY = 1997) and the month as digits 3-4 (10 = October) (source: building-center.org).
Example: serial 97104119 decodes to October 1997.
Luxaire's official lookup at york.bosch-hcgroup.com returns warranty details ('HVAC WARRANTY LOOKUP').

Decoder pages by product

2004 to present VERIFIED
A#A#######Central Air Conditioner, Heat Pump, Furnace, Packaged Unit
1971 to 2004 VERIFIED
AAAA######Central Air Conditioner, Heat Pump, Furnace
era not stated VERIFIED
########Central Air Conditioner, Heat Pump, Furnace, Packaged Unit
era not stated PARTIAL
AA######Central Air Conditioner, Heat Pump, Furnace, Packaged Unit

Official lookup: the authority

Open the official Luxaire lookup takes serial; returns warranty details ('HVAC WARRANTY LOOKUP'); URL partial

Open the official Luxaire 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.

The era not stated format is only partially confirmed (PARTIAL).
The era not stated format is documented but not decodable here: example HM409295 does not decode with the derived engine.
Styles 1 & 4 = York rules; style 3 = Coleman pre-1992 MMYY; style 2 (8-digit YYMM) and style 5 (2-letter) added; style 6 undecodable per source.