How old is my Daikin unit?
Daikin is part of Daikin Industries. 7 serial formats sourced across central air conditioner, heat pump, furnace, mini split, packaged unit.
Serial number decoder for Daikin
Type the serial from the data plate, not the model number. Nothing is sent anywhere; the tables are in this page.
Format example: 1602393269
- Daikin air conditioner serial numbers in the 2012 to present format encode the year as digits 1-2 (YY) and the month as digits 3-4 (source: building-center.org).
- Example: serial 1602393269 decodes to February 2016.
- Daikin air conditioner serial numbers in the era not stated format encode the year as digits 5-6 (YY, after the 4 prefix letters) and the month as digits 7-8 (source: building-center.org).
- Example: serial FBOU0905048200 decodes to May 2009.
- Daikin's official lookup at warranty.goodmanmfg.com returns entitlement.
Decoder pages by product
Central Air Conditioner1 formatHeat Pump2 formatsFurnace1 formatMini Split3 formatsPackaged Unit3 formats
Format eras
- 2012 to present VERIFIED
##########Central Air Conditioner, Heat Pump, Furnace, Mini Split - 2000 to present VERIFIED
##############Mini Split - 1995 to 1999 VERIFIED
##A#######Packaged Unit - 1977 to 1989 VERIFIED
#########Heat Pump, PTAC - 1971 to 1994 VERIFIED
#AA#######Packaged Unit - era not stated VERIFIED
A######Mini Split - era not stated VERIFIED
AAAA##########Packaged Unit
Official lookup: the authority
Open the official Daikin lookup takes serial; returns entitlement; URL verified live
Open the official Daikin 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 is documented but not decodable here: no pattern (no date encoded, or format unknown).
- The 2000 to present format is documented but not decodable here: example 20444501000138 does not decode with the derived engine.
- building-center lists 10 styles; most are Daikin-McQuay (Daikin Applied) commercial formats, referenced to McQuay replacement-parts manuals. Houston-built Daikin-brand residential units (Daikin Manufacturing Company L.P.) use the Goodman YYMM###### style (style 10). Japan/Thailand-built ductless & VRV serials (e.g. 7-digit A000129) do NOT encode the date; read the MFG. DATE printed on the plate (style 1). Warranty lookup URL returned 200 this session (sources/daikincomfort_com_...html).
Sources
- https://www.building-center.org/daikin-hvac-age/
- img: DAIKIN10-HVAC-Age.png (Daikin Manufacturing Co. plate photo)
- img: DAIKIN1-HVAC-Age.jpg
- img: DAIKIN2-HVAC-Age.jpg (ref McQuay parts list 552250.pdf)
- img: DAIKIN3-HVAC-Age.png (ref McQuay 7000016.pdf)
- img: DAIKIN4-HVAC-Age.png (ref McQuay 55205900.PDF)
- img: DAIKIN5-HVAC-Age.png (ref McQuay 552250.pdf)
- img: DAIKIN6-HVAC-Age.png (ref McQuay 552316.PDF, 55210900.pdf)
- https://warranty.goodmanmfg.com/entitlement/GenericEntitlementLookup.htm?site=Daikinofficial
- https://daikincomfort.com/my-daikin-systems/standard-warranty-information/warranty-lookupofficial