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Lennox AC Age: How To Find The Year Of Manufacture

By October 11, 2021No Comments
Lennox Air Conditioner

This guide can show you how to find the year of manufacture for Lennox Air Conditioners and Heaters/Air Handlers.

Related articles: A/C unit lifespan. What is HVAC?

Lennox AC Age

There are 4 different types of serial numbers to decipher the Lennox AC Age.

Lennox AC Label
Lennox AX Label Type 1

Type 1

This is the most common type. This type has 4 digits, a letter, and four other digits. The second two digits are the year and the letter is the month of manufacture.

Use the table below to find the month of manufacture.

A is JanuaryE is MayJ is September
B is FebruaryF is JuneK is October
C is MarchG is JulyL is November
D is AprilH is AugustM is December
Lennox AC Age Letter Code For Month of Manufacture

For example, 1215M1234 would be December 2015.

Type 2

This type has 9 characters in the following order: Letter, 5 Numbers, 3 Letters. The first two digits are the year. The second to last letter is the month. Use the chart below to decode the month of manufacture.

A is JanuaryE is MayJ is September
B is FebruaryF is JuneK is October
C is MarchG is JulyL is November
D is AprilH is AugustM is December
Lennox AC Age Letter Code For Month of Manufacture

Type 3

This type has 2 numbers, a letter, followed by 2 numbers, two letters, and three digits. The first two digits are the day, the letter is the month, and the following two numbers are the year **in reverse**. Use the chart below to find the letter’s respective month of manufacture.

A is JanuaryE is MayJ is September
B is FebruaryF is JuneK is October
C is MarchG is JulyL is November
D is AprilH is AugustM is December
Lennox AC Age Letter Code For Month of Manufacture

For example, 12A56JK123 would be January 12, 1965.

Type 4

This type is all numbers. The last 4 are the year of manufacture and week of manufacture, respectively.

For example, 1234560212 would have a year of manufacture of 2002, week 12.

Lennox Heater/Air Handler Age

Lennox Air Handler:Heater

The air handlers and heaters for Lennox units follow the same types above for air conditioners.

Lennox Air Handler:Heater Label
Lennox Air Handler/Heater Label & Serial Number Type 1

Conclusion

More details can be found from Lennox

If you have additional questions leave them in the comments below.

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