Weil McLain boiler age by serial number
Parent Company: Weil McLain
Similar Brands: Weil McLain | Williamson
😡The age of your Weil McLain HVAC system CAN NOT be determined by the serial number located on the data plate.
😡The age of your Weil McLain HVAC system CAN NOT be determined by a manufactured date located on the data plate.
Many manufacturers, such as Weil McLain, encode the date of manufacture in their serial number. Unfortunately Weil McLain does not.
You must reach out to the manufacturer directly to determine manufacture date or use the lookup function below.
CP Look-up Tool
Enter the 7-digit CP/Serial Number of the boiler to obtain the manufacturing date and any associated information on the product. If the CP# is only 6 digits, enter a leading zero, e.g. 0137718. This look-up will not give manufacturing information for any other Weil-McLain product boilers. Currently, no information is available for EG and EGH boilers.

Weill Mclain uses a serial number that is either printed on a white or silver label. The sticker is placed either on the side panel or inside the front of the unit.
Weil McLain Boiler Age Format Sample 1

Weil McLain Boiler Age Format Sample 2

Weil McLain Boiler Age Format Sample 3

CP Date Ranges
The below table may be used as a guideline in the event the CP Look-up Tool fails to yield sufficient results. Using the boiler CP, find the range in which the CP number appears in the right columns, then refer to the left-most column for an approximate date of manufacture.
**AquaBalance CP numbers are not sequential. This chart may not be sufficient for this model.
| Date of Manufacture | CP Start Number | CP End Number |
|---|---|---|
| 1988 | 1414xxx | 1681xxx |
| 1989 | 1681xxx | 1871xxx |
| 1990 | 1871xxx | 2050xxx |
| 1991 | 2056xxx | 2217xxx |
| 1992 | 2217xxx | 2399xxx |
| 1993 | 2400xxx | 2609xxx |
| 1994 | 2609xxx | 2815xxx |
| 1995 | 2815xxx | 3003xxx |
| 1996 | 3003xxx | 3213xxx |
| 1997 | 3213xxx | 3441xxx |
| 1998 | 3441xxx | 3621xxx |
| 1999 | 3621xxx | 3810xxx |
| 2000 | 3810xxx | 4055xxx |
| 2001 | 4055xxx | 4311xxx |
| 2002 | 4311xxx | 4586xxx |
| 2003 | 4587xxx | 4807xxx |
| 2004 | 4807xxx | 5047xxx |
| 2005 | 5047xxx | 5301xxx |
| 2006 | 5301xxx | 5454xxx |
| 2007 | 5454xxx | 5731xxx |
| 2008 | 5731xxx | 5957xxx |
| 2009 | 5957xxx | 6150xxx |
| 2010 | 6150xxx | 6368xxx |
| 2011 | 6368xxx | 6555xxx |
| 2012 | 6555xxx | 6779xxx |
| 2013 | 6779xxx | 6998xxx |
| 2014 | 6998xxx | 7209xxx |
| 2015 | 7209xxx | 7429xxx |
| 2016 | 7429xxx | 7493xxx |
| 2017 | 7493xxx | 7629xxx |
| 2018 | 7629xxx | 7729xxx |
| 2019 | 7729xxx | 7782xxx |
| 2020 | 7782xxx | 7880xxx |
| 2021 | 7880xxx | 7961xxx |
| 2022 | 7961xxx | 8067xxx |
| 2023 | 8067xxx |
About Weil-McLain
Weil-McLain® is a leading North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings.
A complete list of the Top HVAC Manufacturers.
How old is my Weil McLain Boiler
Weill Mclain uses a serial number that is printed on a white or silver label. The sticker is placed either on the side panel or inside the front of the unit. Use that number and enter it into the CP-lookup tool on their website. https://www.weil-mclain.com/cp-lookup
Weil McLain Boiler age & equipment life expectancy
Many homeowners want a Home Inspector to predict how long their HVAC equipment will last. This is simply impossible and beyond the scope of a Home Inspection — depending on the model, installation, maintenance, and fuel source its lifetime could be anywhere between 1 to 30 years or more.
The first step you should take when determining the HVAC equipment’s age is to check the manufacturer’s label attached to the unit.
The label will often include pertinent information including:
- Manufacturer Name
- Brand Name
- Manufacture Date
- Model Number
- Serial Number
If you can’t determine the installation date of the HVAC Equipment, it’s worth checking to see if you’re nearing time for a replacement based on the manufactured date/age. You can use the model number in conjunction with the serial number of the unit in order to determine the HVAC equipment’s age.
Here is a list of additional HVAC Manufacturers.
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Last Updated on 2 years ago

