Condenser Nameplate Check the upper-right hand corner of the nameplate for the unit's manufacture date. If the manufacture date is not visible on the condenser, you can always locate the brand, model and serial number on the plate, which will help to determine the age of the unit.
How do you read a Lennox air conditioner model number?
New Lennox serial numbers usually contain 4 numbers followed by a letter. The first 2 numbers stand for the factory location, the second 2 numbers are the year and the following letter is the month.
How can you tell the age of an AC unit?
Check the upper-right hand corner of the nameplate for the unit's manufacture date. If the manufacture date is not visible on the condenser, you can always locate the brand, model and serial number on the plate, which will help to determine the age of the unit.
How do you tell what year a Lennox unit is?
The date of production/manufacture or age of Lennox® HVAC equipment can be determined from the serial number located on the data plate.