HVAC Serial Number Lookup
Daikin Serial Number Lookup
Daikin is part of the Daikin. Enter the serial from the data plate below to get the manufacture date with a character-by-character explanation, the unit's age, its refrigerant era, and the warranty picture.
Decode schemes compiled from manufacturer literature and inspector references, cross-checked across two sources wherever possible (Daikin sources: building-center.org + inspectorhandbook + abihomeservices + pickhvac; building-center.org + hvacserialnumber.com + stewartchi.com). Single-sourced rules are labeled low confidence instead of being presented as fact. A date stamped or printed on the data plate always outranks a serial decode.
Daikin Serial Number Formats
| Format | Era | Example | Confidence |
|---|---|---|---|
| 10 digits; digits 1-2 = year, digits 3-4 = month | Goodman since at least 1997; Janitrol 1982-1992; Daikin US unitary 2013+ | 9704011000 = April 1997 | high |
| 14 characters; characters 5-6 = year, characters 7-8 = month | 2000s to present (Japan/Thailand/Mexico-built mini splits) | FBOU0905048200 = May 2009 | medium |
Worked Example: Daikin 1602393269
Expected decode: February 2016 (Daikin unitary). Character by character:
16 = year 2016 (digits 1-2)
02 = February (digits 3-4)
393269 = production sequence
Daikin Refrigerant Timeline
| Manufacture year | Typical refrigerant | Notes |
|---|---|---|
| through 2012 | R-410A or R-22 | Pre-Goodman-era Daikin US products vary; check the spec sheet. |
| 2013 to 2023 | R-410A | Goodman-built Daikin unitary (DX prefix) ran R-410A. Mini splits were mostly R-410A through the early 2020s, but Daikin moved US ductless to R-32 ahead of the unitary lines; the model's spec sheet governs. |
| 2024 and later | R-32 | Daikin committed its US residential portfolio to R-32; Goodman-built R-32 lines started production mid-2024. For mini splits, decode refrigerant from the model spec sheet, not the year. |
The refrigerant printed on the nameplate is authoritative; this timeline tells you what is typical for the age, not what is in a specific unit.
Daikin Warranty Baseline
Current policy: 12-year parts limited warranty plus 6-year unit replacement on eligible residential systems registered within 60 days, the strongest baseline in this tool. Verify the unregistered fallback (commonly cited as 5-year parts) on daikincomfort.com.
Source: daikincomfort.com standard warranty page. Decode the manufacture date above, then confirm coverage through the manufacturer's own serial-number warranty lookup.
Frequently Asked Questions
How old is my Daikin unit?
Decode the serial number from the data plate. The dominant Daikin format (2013 to present, Goodman-built US unitary) is: 10 digits; digits 1-2 = year, digits 3-4 = month. Example: 1602393269 decodes to February 2016 (Daikin unitary). Subtract the decoded year from the current year for the age. Units past 15 years are replacement candidates, and past 20 a major repair rarely pays off.
Which brands share the Daikin serial number format?
Daikin is part of the Daikin, alongside Goodman, Amana, and Janitrol. These brands come off shared production lines with the same data plates, so one decode rule dates all of them, and the refrigerant and warranty picture is the same across the family.
What refrigerant does a Daikin unit use?
By manufacture year: through 2012: R-410A or R-22; 2013 to 2023: R-410A; 2024 and later: R-32. The refrigerant printed on the nameplate is authoritative; the year-based mapping tells you what is typical for the age, not what is in a specific unit.
Is my Daikin unit still under warranty?
Current policy: 12-year parts limited warranty plus 6-year unit replacement on eligible residential systems registered within 60 days, the strongest baseline in this tool. Verify the unregistered fallback (commonly cited as 5-year parts) on daikincomfort.com. Decode the manufacture date above, then confirm coverage by running the full serial through the manufacturer's own warranty lookup. Terms shown are the current policy; older units often carried different terms.
Why do some Daikin serial numbers refuse to decode?
Many Daikin mini splits and applied units do not encode a date in the serial at all. Those carry a separate MFG DATE box on the data plate (for example 2008-1); read it directly.
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