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Gas Furnaces, Split AC & Package Units

How Old Is My Goodman?

Type the serial number from the rating label on your Goodman furnace, AC or heat pump to see when it was made and how much of its typical 14-year life is left.

Try an example:

Where to find the serial number on a Goodman

On an outdoor AC or heat pump, the rating plate is on the side of the cabinet near the copper lines. On a furnace, remove the upper front door; the label is on the inside wall or the door itself.

Tip: in a dark basement or closet, take a photo of the label with your phone's flash on and zoom in on the photo.

How to read a Goodman serial number

Year + month (10 digits)

Used 1975–today

Digits 1-2 are the year and digits 3-4 are the month. 1907 = July 2019.

Example: 1907543210 → July 2019

Common replacement parts for Goodman

Always match the part to the model number on your rating label, and have gas or refrigerant work done by a licensed technician.

Common questions about Goodman equipment

How do I decode a Goodman furnace serial number?

Read the first 4 numerical digits: the first two are the year, and the next two are the month. For instance, serial starting with 2109 was built in September 2021.

Does Goodman share serial number styles with Amana?

Yes. Goodman, Amana, and Daikin are manufactured by Daikin Comfort Technologies and use the exact same YYMM 10-digit serial numbering system.

How long does a Goodman furnace, AC or heat pump last?

About 14 years on average. Units that get yearly maintenance often last longer; units in hard-water areas, coastal air or unconditioned spaces often fail sooner.

Is the serial number the same as the model number?

No. The model number describes the product line, size and options. The serial number identifies your exact unit and contains the manufacture date. Both are printed on the same rating label.

How accurate is this age estimate?

The date comes from the published serial number formats for each brand. It is the factory date, not the installation date, and some formats repeat every 10 or 20 years. If the label shows a printed MFG. DATE, that date wins.