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Daikin / Goodman family

How old is my Daikin air conditioner?

Enter the serial number from the label. The date comes from Daikin's documented serial rules, not a guess.

Look for “Serial No.” or “S/N” on the label. Spaces and dashes are fine.

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How to read a Daikin air conditioner serial number

Daikin sells two very different kinds of equipment. Its ducted systems built in Houston (furnaces, air conditioners, heat pumps, air handlers and packaged units) use the Goodman family serial, which starts with the year and then the month. Daikin ductless mini-splits and VRV systems, made by Daikin Industries, don’t carry the date in the serial, so read the MFG. DATE on the plate instead.

  • Year + month (all-numeric)

    Example: 1602393269 (Daikin) was made in February 2016. Goodman, Amana and Daikin ducted serials start with the year and month: "16" is 2016 and "02" is February.

Not decoded yet: Daikin ductless and VRV units don't encode the date in the serial; use the MFG. DATE on the plate. Older dashed Amana serials are not decoded.

Where to find the serial number

The rating plate is on the outdoor unit, usually on the side or back of the cabinet near the electrical disconnect or the refrigerant line connections.

Don't open the unit's panels to look for it. If the plate is faded, the indoor coil or the installer's paperwork may also list the model and serial.

Daikin air conditioner model numbers

If the brand name isn't visible on the label, the model number can help. Model numbers like these follow Daikin's published nomenclature:

How long does a air conditioner last?

A typical air conditioner lasts about 10–15 years. That's a general estimate: maintenance, usage, climate and installation all matter, and age alone doesn't tell you a unit's condition. Some manufacturer pages cite 15–20 years for well-maintained systems.

Range from NAHB / Bank of America, Study of Life Expectancy of Home Components (2007, archived copy) and Carrier: AC replacement.

Daikin air conditioner recalls

From the U.S. Consumer Product Safety Commission, checked 2026-09-29. A decoded result checks your model number against recalls live.

Questions

Does a model number starting with D mean the unit is a Daikin?
Usually, on furnaces (DM96VC), outdoor units (DX14SA, DZ14SA) and packaged units (DP14). The exception is Goodman’s DSXC and DSZC outdoor units, where Goodman’s service manual defines D as “Deluxe Goodman”. Daikin-branded air handlers can also carry the shared A-prefix models, such as ARUF.
My Daikin serial starts with a letter. Why isn’t it decoded?
The Houston-built ducted serial is all digits, so a letter-first serial is a different format. On ductless units the date isn’t in the serial: one documented Daikin plate pairs serial A000129 with a separate MFG. DATE of 2008-1. Daikin PTAC letter formats aren’t decoded yet either.
How can I tell how old my Daikin air conditioner is?
Find the serial number on the rating plate and enter it above. Daikin air conditioners use the Daikin / Goodman family serial format, which includes the manufacture date. For example, 1602393269 was made in February 2016: Goodman, Amana and Daikin ducted serials start with the year and month: "16" is 2016 and "02" is February.
Where is the serial number on a Daikin air conditioner?
The rating plate is on the outdoor unit, usually on the side or back of the cabinet near the electrical disconnect or the refrigerant line connections. Don't open the unit's panels to look for it. If the plate is faded, the indoor coil or the installer's paperwork may also list the model and serial.
How long does a air conditioner usually last?
A typical service life is about 10–15 years. That's a general estimate: maintenance, usage, climate and installation all matter, and age alone doesn't tell you a unit's condition.
Do Goodman and Amana air conditioners use the same serial format?
Yes. Daikin, Goodman and Amana use the same serial-number conventions (Daikin / Goodman family), so the same decoding rules apply.
How reliable is the result?
The Daikin / Goodman family rules come from documented sources, but they're in Beta while we check more real-world examples, so results are capped at medium confidence. If a serial doesn't match a documented format, we say so instead of guessing.

Same serial format: Goodman air conditioner, Amana air conditioner

Other Daikin equipment: furnace, heat pump

Sources

Rules last reviewed 2026-09-28. These rules are in Beta while we verify more real-world examples, so results are capped at medium confidence.

Manufacture dates are decoded from manufacturer serial-number conventions and available documentation. Serial formats can change. Verify critical equipment information with the manufacturer when necessary.