Rheem furnace age??

Specific Inspection Topics Inspecting HVAC Systems
1

trying to figure a furnace age. model number got me to between 1996 - 2005.
ser #FD5D302F400006727. Need some help.

2

Before 1974 the first 2 digits indicated the year and the next digit the
month. Example: 732xxx = February 1973.
Since then, the age is coded into the last four digits of the serial number by week and
year.

3

I know, but it don’t fit Wayne

4

2002
was there not a space somewhere there?

5

dont use model number use the serial number.

6

40th Week of 2000

7

40000 6727

8

John has it correct…

1st two digits, after the “F”, is the week and the 2nd two digits, after the “F”, is the year.

9

Thanks guys, was there a few years that the numbers were coded different?. This is what I got off the internet some time ago:
Rheem/Ruud: Before 1974 the first 2 digits indicated the year and the next digit the
month. Example: 732xxx = February 1973.
Since then, the age is coded into the last four digits of the serial number by week and
year. Therefore xxxx2302 = 23rd week of 2002.