Olsen®

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

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

Parent Company:  Olsen

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

Style 1:   1207A012064

Description: Eleven (11) character Serial number begins with four (4) numerical digits followed by one (1) letter and ends with six (6) numerical digits.

Year of manufacture is 3rd-4th character numerical digits

Month of manufacture is 5th character letter digit (see chart below)

Style 2:   HTYL54759

Description: Nine (9) character Serial number begins with four (4)character letters followed by five (5) character numerical digits

Month of manufacture is 1st character letter digit (see chart below

Year of manufacture is 2nd character letter (see chart below)

Style 3:   27191 BCKLU

Description: Ten (10) character Serial number begins with five (5)character numerical digits followed by five (5) character letter digits.

Month of manufacture is 6th character letter digit (see chart below).

Year of manufacture is 7th character letter digit (see chart below).

Style 4:  79766 BCOL

Description: Nine (9) character Serial number begins with five (5) character numerical digits followed by four (4) character letter digits

Month of manufacture is 6th character letter digit (see chart below).

Year of manufacture is 7th character letter digit (see chart below).

Style 5:   R-2880

Description: Six (6) character Serial number (includes dash) begins with one (1)character letter followed by a dash and ends with four (4) character numerical digits

Unfortunately we are unable to determine the date of manufacture or age of these units. Perhaps you can assist us in our research with additional information.
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Using the ANSI or CSA standards to determine approximate Date of Manufacture.

Most manufacturers today are required to include the manufacture compliance standard on the data tag. For the U.S. the compliance standard is typically from the American National Standards Institute (ANSI). For Canada, a common standard compliance is through the Canada Standards Association Group (CSA). Many times both standards are listed. Regardless, the specific standard will normally be listed on the data tag/plate and followed by the YEAR of the last revision (often the year is placed in parenthesis or follows the hyphen after the specific standard number). As these standards are revised or renewed approximately every 4 to 6 years, one can reasonably estimate the year of manufacture within 4-6 years from (after) the standards date.

ECR® Brands and Serial Number Styles:

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