How to determine the date of production/manufacture or age of Pennco® HVAC Systems.

The date of production/manufacture or age of Pennco® HVAC equipment can be determined from the serial number located on the data plate.

Parent:  Pennco
Sister or similar Brands Include: AIRCO®, ARGO®, Dunkirk®, ECR®, EMI®, E-verter®, Olsen®, Oneida Royal®, Pennco®, RetroAire®, Ultimate®, and Utica®

Example serial number styles/formats found:

  • Style 1: P360400133

Style 1:   P360400133

Description: Ten (10) character Serial number begins with the letter “P” followed by (9) numerical digits.
(Note: Pennco Serial Numbers all begin with the letter “P”).
Work week of manufacture is 2nd & 3rd character numerical digits
Year of manufacture is 4th & 5th character numerical digits.

ECR® Brands and Serial Number Styles:

A quick reference guide published by ECR® that is included here for your convenience.

Page last updated: 7 Sep 2015

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