Carrier HVAC Age by Serial Number Lookup
Parent Company: Carrier
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😊The age of your Carrier HVAC system CAN be determined by the serial number located on the data plate.
😊The age of your Carrier HVAC system CAN be determined by a manufactured date located on the data plate.
Many manufacturers such as Carrier, encode the date of manufacture in their serial number. Fortunately Carrier does!
Carrier HVAC Age by Serial Number Lookup Format 1:

Carrier Serial Number Lookup Format 1 Sample #1:

Carrier HVAC Age by Serial Number Lookup Format 1 Sample #2:
The below unit was manufactured the 23rd week of 2021.
Thus the JUN 2021 stamped date.

Carrier HVAC Age by Serial Number Lookup Format 1 Sample #3:
The below unit was manufactured the 50th week of 2013.
Thus the DEC 2013 stamped date.

Other Formats To Determine Carrier AC or HVAC Age
| Type | Identifying Feature | Year | Month |
Format 2 |
Nine (9) character all numerical Serial number. YYMM followed by 5 numbers; primarily used in the 80’s. | First 2 Numbers | Second 2 Numbers |
Format 3 |
Eight (8) character serial number begins with one (1) letter followed by one (1) numerical digit and then another letter digit then 5 numbers; primarily used in the 80’s. | First Digit is the Year | View Letter Chart |
Format 4 |
Seven (7) digit serial number that begins with a letter and ends with six (6) numerical digits. Letter followed by a number; only used in 1970’s. | First Digit is the Year in 197(x) | View 2nd Letter Chart |
Letter Chart For Format 3 ONLY
| Letter | Month | Letter | Month |
| M | January | T | July |
| N | February | V | August |
| P | March | X | September |
| Q | April | X | October |
| R | May | Y | November |
| S | June | Z | December |
Letter (MONTH) Chart For Format 4 ONLY
| Letter | Month | Letter | Month |
| A | January | G | July |
| B | February | H | August |
| C | March | I | September |
| D | April | J | October |
| E | May | K | November |
| F | June | L | December |
Number (YEAR) Chart For Format 4 ONLY
| Number | Year | Number | Year |
| 0 | 1970 | 5 | 1975 |
| 1 | 1971 | 6 | 1976 |
| 2 | 1972 | 7 | 1977 |
| 3 | 1973 | 8 | 1978 |
| 4 | 1973 | 9 | 1979 |
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About Carrier
Founded by the inventor of modern air conditioning, Carrier is a world leader in high-technology heating, air-conditioning and refrigeration solutions. Carrier experts provide sustainable solutions, integrating energy-efficient products, building controls and energy services for residential, commercial, retail, transport and food service customers. Carrier is a part of Carrier Global Corporation, global leader in intelligent climate and energy solutions that matter for people and our planet for generations to come.
Carrier HVAC equipment life expectancy
Many homeowners want a Home Inspector to predict how long their HVAC equipment will last. This is simply impossible and beyond the scope of a Home Inspection — depending on the model, installation, maintenance, and fuel source its lifetime could be anywhere between 1 to 30 years or more.
The first step you should take when determining the HVAC equipment’s age is to check the manufacturer’s label attached to the unit.
The label will often include pertinent information including:
- Manufacturer Name
- Brand Name
- Manufacture Date
- Model Number
- Serial Number
If you can’t determine the installation date of the HVAC Equipment, it’s worth checking to see if you’re nearing time for a replacement based on the manufactured date/age. You can use the model number in conjunction with the serial number of the unit in order to determine the HVAC equipment’s age.
Here is a list of additional HVAC Manufacturers.
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Last Updated on 2 years ago


