SerialAtlas
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HVAC date-code guide

Daikin (North American ducted) serial number lookup

Many Daikin ducted products built through the Goodman platform use the same front-loaded year-and-month serial logic. Mini-split and imported product lines can use different systems.

Parent
Daikin Comfort Technologies
Common code
The first two digits are the year and the next two digits are the month (YYMM).
Reviewed
August 8, 2026

Instant equipment lookup

Decode the manufacturing date

Runs on this device
Equipment type

Using The first two digits are the year and the next two digits are the month (YYMM).

Type exactly what is printed. Spaces and dashes are ignored.

Optional: add model number for capacity cluesAdd model

Model decoding is labeled as a clue unless the exact format is documented.

No signupNo uploadNo serial-number tracking

EQUIPMENT DATA
MODEL24ABC636A003
SERIAL5019X30312
WeekYear

See exactly how the code was read

SerialAtlas highlights the date characters, names the matching rule, and shows alternative interpretations when the code is ambiguous.

  • Current age calculated automatically
  • Confidence and rule source shown
  • Optional model-capacity clue

Evidence-led route update

Daikin ducted date-code evidence

If you need to estimate a Daikin ducted unit’s manufacture age, confirm that the equipment is the North American ducted platform represented by this guide.

Confirm the North American ducted platform before using YYMM

The first two digits are the year and the next two digits are the month (YYMM). The catalogued ducted family uses the Goodman-platform YYMM evidence: first two characters year, next two month. Mini-split and imported Daikin lines are intentionally outside that assumption. The catalogued Daikin ducted family uses Goodman-platform YYMM evidence: the first two serial digits are year and the next two month. This is a platform-specific read, not a claim about every Daikin mini-split or imported line.

Worked example: 0809123456

0809123456 — The verified decoder reads this fixture as September 2008. The date is a manufacture estimate, not an installation date.

When a Daikin label is imported or mini-split

A different market or product line can invalidate the ducted-platform assumption. Record the indoor/outdoor pairing and use Daikin support when the label does not identify the North American ducted family.

Model number vs. serial number

The Daikin model identifies the platform and configuration; the serial supplies the date only after that platform check. Record the outdoor and indoor model/serial pairing and use Daikin support when the platform or market is unclear.

Limits and official support

Imported and mini-split Daikin lines can use another serial format. If the result affects warranty, registration, parts, safety, or replacement decisions, use the complete model and serial with the manufacturer or a qualified professional. SerialAtlas is an independent reference, not an official warranty lookup or warranty coverage decision.

Open Daikin (North American ducted) support route

How to read a Daikin (North American ducted) serial number

The first two digits are the year and the next two digits are the month (YYMM). SerialAtlas removes spacing and punctuation, then applies only the documented rule families mapped to Daikin (North American ducted). The lookup remains in the browser.

Try this documented-style example0809123456Load example

Equipment covered

  • air conditioners
  • heat pumps
  • furnaces
  • air handlers
  • packaged systems

Commercial, imported, very old, specialty, and private-label equipment can use a different code. Confirm the full rating plate before accepting a result.

Where to find the rating plate

  • Outdoor condenser or heat-pump cabinet, usually near the service valves
  • Inside the furnace or air-handler access panel
  • On the packaged-unit rating plate
  • Near the electrical disconnect or wiring diagram

Why more than one date can appear

Two-digit years and repeating letter cycles can point to more than one era. SerialAtlas ranks the plausible dates but keeps materially different alternatives visible. Label design, refrigerant, installation records, and product literature can resolve the era.

Source and verification

Inspector Handbook open reference data (CC BY 4.0). Independently implemented and reviewed August 8, 2026.

Open reference source

What this result does not prove

A manufacture date is not an installation date, warranty decision, recall match, condition assessment, or replacement recommendation. Confirm high-stakes decisions with the manufacturer or a qualified professional.