![]() How can I tell the age of a Goodman heat pump or air conditioner from the serial number? The first two digits of the serial number are the year of manufacture for a Goodman heat pump or air conditioner. How do you tell the age of a Goodman furnace? Near the top of the nameplate you should see the manufacturer's date as a month and year. On most units, the nameplate is fixed to the backside of the cabinet. You'll find a metal nameplate attached to it containing the system's technical specs. Go to the outside cabinet of the air conditioning system. Hereof, how can I tell how old my HVAC is? ![]() "5498L" will give you the place, year and month of manufacture for the Lennox air conditioning unit.īeside above, how old is my Lennox HVAC? The date of production/manufacture or age of Lennox® HVAC equipment can be determined from the serial number located on the data plate. How to Determine Furnace Age Maintained by send suggestions to Date of Manufacture: Using the second, third, fourth and fifth digits of the serial number L9433 21238 you will find the year and week of manufacture. Use the serial number 5498L9988 for an example. Write down the first five digits of the Serial Number. This unit was manufactured in 2010.Īccordingly, how can I tell how old my Lennox furnace is?įind the series of numbers and the letter that follow the word "Serial" on the identification plate. ![]() ![]() How can I tell the age of a Lennox heat pump or air conditioner from the serial number? The second two digits of the serial number are the year of manufacture for Lennox units. ![]()
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