Goodman furnace and AC age by serial number
Goodman serial numbers are all digits, and the first four are the year and month the unit was made. Type the serial from your furnace, air conditioner or heat pump into this Goodman serial number lookup to read the Goodman manufacture date.
Where do I find the serial number?
On a Goodman furnace the serial plate is inside the blower compartment, so remove the lower front panel to see it. Goodman outdoor condensers and heat pumps have the plate on the cabinet, usually on the side closest to the house.
How to read a Goodman serial number
A Goodman serial is nine or ten digits long with no letters. Digits one and two are the year and digits three and four are the month, so 1609123456 was made in September 2016. Everything after that is a sequence number.
- Used
- 1980s to present
- Format
- Year, month, sequence (all digits)
- Example
- 1609123456
Example, read
Nine-digit and ten-digit serials both start with the year and month.
Some websites read these four digits as week and year. The better sources agree they are year, then month.
Where to find the serial number
On a Goodman furnace the serial plate is inside the blower compartment, so remove the lower front panel to see it. Goodman outdoor condensers and heat pumps have the plate on the cabinet, usually on the side closest to the house.
Brands with the same format
Questions
How old is my Goodman AC?
Take the first four digits. 9901123456 reads as January 1999, because 99 is the year and 01 is the month.
Is a Goodman serial week and year, or year and month?
Year and month. Some websites describe it as week and year, but the better sources agree on year then month, and that is the rule we use.
My Goodman serial is only nine digits. Does that matter?
No. Nine-digit and ten-digit Goodman serials both start with the year and month. The sequence at the end is just shorter.
Why won't a serial starting 1613 decode?
The third and fourth digits are the month, and there is no month 13. Check each digit against the plate, since a misread digit is the usual cause.
Do Amana and Daikin units use the same format?
Amana and Daikin use the same serial format as Goodman for their current all-digit serials. Older Amana units also have a shorter format with a dash.
Can I look up a Goodman model number here?
No. We decode age, not model numbers. A Goodman model number spells out the kind of equipment and its capacity, which is useful when ordering parts or sizing a replacement.