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

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

Parent Company: GE

Example serial number styles/formats found:

Style 1:      ZTN730A100AC

Style 1:    ZTN730A100AC

The date of manufacture is coded in the 1st & 2nd characters of the serial number and represent the year and month of manufacture
(See charts below).

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.

Page last updated: 26 July 2017