Ruud

 

Style 1:

The Date of Manufacture is in the first four digits of the serial number and represent the month and year of production:

1204D01224

12 04 D01224

Month 12

Year 04

 

Style 2:

The Date of Manufacture is in the ninth through twelfth digits of the serial number and represent the week and year of production:

CB5D302F099903546

CB5D302F 09 99 03546

Week 09

Year 99

 

Style 3:

The Date of Manufacture is in the sixth through ninth digits of the serial number and represent the week and year of production:

7021 M3405 09839

7021 M 34 05 09839

Week 34

Year 05

 

Style 4:

The Date of Manufacture is in the last four digits of the nine digit serial number and represent the week and year of production:

129451872

12945 18 72

Week 18

Year 1972

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HVAC Consulting

6701 Carmel Road

Suite 116

Charlotte, NC 28226

888-406-0980

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