How old is my Bryant heat pump?
Serial number age decoder for Bryant heat pumps: 4 format eras, the decode rule in plain English, transcribed tables, and the official lookup.
Type the serial from the data plate, not the model number. Nothing is sent anywhere; the tables are in this page.
Format example: 4006A17330
- Bryant heat pump serial numbers in the 1980 to present format encode the year as digits 3-4 (2-digit year; century by context, 1980+) and the week as digits 1-2 (01-53) (source: building-center.org).
- Example: serial 4006A17330 decodes to week 40 of 2006.
- Bryant heat pump serial numbers in the 1980 to 1984 format encode the year as digit 2 (table below) and the month as letter 1 via table (M-Z skipping O and U) (source: building-center.org).
- Example: serial W4D14008 decodes to September 1984.
- Bryant heat pump serial numbers in the 1980 to 1984 format encode the year as digit 1 (table below) and the month as letter 2 via table (M-Z skipping O and U) (source: building-center.org).
- Example: serial 4WD14008 decodes to September 1984.
- Bryant's official lookup at bryant.com returns general parts warranty period.
Format eras
- 1980 to present VERIFIED
####A#####digits 3-4 (2-digit year; century by context, 1980+) - 1980 to 1984 VERIFIED
A#A#####digit 2: 0=1980 1=1981 2=1982 3=1983 4=1984 - 1980 to 1984 VERIFIED
#AA#####digit 1: 0=1980 .. 4=1984 - 1960 to 1979 VERIFIED
##A######first LETTER via table (L=1960 .. H=1979, cycles L-Z then A-H, skipping O, Q, Z)
How to read the serial
1980 to present formatVERIFIED
Shape ####A##### · example 4006A17330 · confidence high
- Year
- digits 3-4 (2-digit year; century by context, 1980+)
- Week or month
- week = digits 1-2 (01-53)
- Plant
- letter at position 5 (plant/line code; table not published)
Example: serial 4006A17330 decodes to week 40 of 2006.
Listed under Carrier in the source; Bryant is named in that format's family and the corporate link is an estimate, not a checked fact.
1980 to 1984 formatVERIFIED
Shape A#A##### · example W4D14008 · confidence high
- Year
- digit 2: 0=1980 1=1981 2=1982 3=1983 4=1984
- Week or month
- month = letter 1 via table (M-Z skipping O and U)
- Plant
- letter 3 = unknown code (not published)
| Year code | Year(s) |
|---|---|
| 0 | 1980 |
| 1 | 1981 |
| 2 | 1982 |
| 3 | 1983 |
| 4 | 1984 |
| Month code | Month |
|---|---|
| M | January |
| N | February |
| P | March |
| Q | April |
| R | May |
| S | June |
| T | July |
| V | August |
| W | September |
| X | October |
| Y | November |
| Z | December |
Example: serial W4D14008 decodes to September 1984.
1980 to 1984 formatVERIFIED
Shape #AA##### · example 4WD14008 · confidence medium
- Year
- digit 1: 0=1980 .. 4=1984
- Week or month
- month = letter 2 via table (M-Z skipping O and U)
| Year code | Year(s) |
|---|---|
| 0 | 1980 |
| 4 | 1984 |
| Month code | Month |
|---|---|
| M | January |
| N | February |
| P | March |
| Q | April |
| R | May |
| S | June |
| T | July |
| V | August |
| W | September |
| X | October |
| Y | November |
| Z | December |
Example: serial 4WD14008 decodes to September 1984.
1960 to 1979 formatVERIFIED
Shape ##A###### · example 46U152456 · confidence high
- Year
- first LETTER via table (L=1960 .. H=1979, cycles L-Z then A-H, skipping O, Q, Z)
- Week or month
- week = leading 1-2 digits (1-52)
| Year code | Year(s) |
|---|---|
| L | 1960 |
| M | 1961 |
| N | 1962 |
| P | 1963 |
| R | 1964 |
| S | 1965 |
| T | 1966 |
| U | 1967 |
| V | 1968 |
| W | 1969 |
| X | 1970 |
| Y | 1971 |
| A | 1972 |
| B | 1973 |
| C | 1974 |
| D | 1975 |
| E | 1976 |
| F | 1977 |
| G | 1978 |
| H | 1979 |
Example: serial 46U152456 decodes to week 46 of 1967.
Listed under Carrier in the source; Bryant is named in that format's family and the corporate link is an estimate, not a checked fact.
Where the data plate is on a heat pump
On the outdoor unit, same place as a condenser: a plate on the side or back of the cabinet near the line set. The indoor air handler carries its own plate with its own serial.
General guidance, not brand-specific: the owner's manual or the installer can point to the exact spot. See the data plate guide.
For scale only: the InterNACHI Standard Estimated Life Expectancy Chart for Homes lists Heat Pump at 10 to 15 years of expected service (nachi.org). That chart is a guideline, not a prediction for your unit.
Open the official Bryant lookup takes serial number + original-owner Y/N; returns general parts warranty period; URL verified live
This site is a reference built from published tables. The manufacturer's own lookup wins whenever the two disagree.
What we could not confirm
- Bryant is treated as sharing Carrier's format because the source lists it in that family; the corporate relationship itself is an estimate.
- Building-center Bryant page = Carrier styles 1-5 (0709G10932 WWYY-L-#####; 850304091 YYMM 1980s; W4D14008 1980-84 BDP; A167890 1970-79; 46U152456 1960-79). Warranty page has a serial-number lookup (curl 200, form text confirmed). BDP = Bryant/Day & Night/Payne, the Carrier subsidiary that built 1980s units.
