United Refrigeration®

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

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

Parent Company:  Paloma

Example serial number styles/formats found:

The Serial Numbers shown are utilized with all Paloma Brand systems.
  • Style 1:     1204D01234
  • Style 2:     OR177 M2807 00097
  • Style 3:     W291013412
  • Style 4:     CB5D302F099903346
  • Style 5:      123451872

Style 1:   1204D01234

Month of manufacture can be determined by using the 1st  & 2nd numerical digits.
Year of manufacture can be determined by using the 3rd & 4th numerical digits.

Style 2:   OR177 M2807 00097

The Date of Manufacture is coded in the middle group of digits following a letter designation of either “F” or “M” and represent the week and year of production.

Style 3:   W291013412

Week of manufacture can be determined by using the 2nd & 3rd numerical digits.
Year of manufacture can be determined by using the 4th & 5th numerical digits.

Style 4:   CB5D302F099903346

The Date of Manufacture is coded in the middle group of digits following a letter designation of either “F” or “M” and represent the week and year of production.

Style 5:   123451872

The Date of Manufacture is coded in the last four digits of the 9 digit serial number and represent the week and year of production.

Page last updated: 7/30/2017

RHEEM Corporate Office
1100 Abernathy Road, Suite 1400
Atlanta, GA 30328

www.rheem.com

Any of the trademarks, service marks, collective marks, design rights or similar rights that are mentioned, used or cited in the articles of the Building Intelligence Center (www.buildingcenter.org) are the property of their respective owners. Their use here does not imply that you may use them for any purpose other than for the same or a similar informational use as contemplated by the original authors of these articles under the CC-BY-SA and GFDL licensing schemes. Unless otherwise stated Building Intelligence Center (www.buildingcenter.org) sites are neither endorsed by nor affiliated with any of the holders of any such rights and as such Building Intelligence Center (www.buildingcenter.org) cannot grant any rights to use any otherwise protected materials. Your use of any such or similar incorporeal property is at your own risk. This guide is intended to assist Commercial/Residential Building Inspectors, HVAC professionals, Facilities Managers, HOA’s, etc.., in determining the date of manufacture and/or age of HVAC equipment to determine the expected useful life (EUL). This web site should not be relied upon for commercial use or interpretations. Accuracy and reliability of the information provided is believed accurate but is not guaranteed. The burden for fitness of information provided relies solely and completely with the user. In no event will Building Intelligence Center or its representatives be liable for any loss or damages whatsoever for consequential, incidental, indirect, special, or tort damages of any kind, including but not limited to loss of data, lost profits, business interruption, loss of business information, or other pecuniary loss that might arise from the use of or reliance on the information provided within.

Help keep this site FREE to the public.

Please consider a single donation of $5, $10, $20, $50 or more…

Or join some of our generous donors who provide $2 to $10 automatic monthly donations!
Any amount will help and greatly appreciated to help us maintain this site for your use!