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

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

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

Example serial number styles/formats found:

  • Style 1: 369300456

Style 1:   369300456

Description: Nine (9) character numerical Serial number.
Work week of manufacture is 1st-2nd character numerical digits
Year of manufacture is 3rd-4th 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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