#Lennox serial number date code how to
#Lennox serial number date code code

In the same way, the 8th digit codes for the years before or after 1980, where A equals 0. If you have an older furnace, it most likely wonвЂ™t be compatible with the newer coil, and subsequently, the newer outdoor air conditioning condenser. In this serial number, the 7th digit represents the month of manufacture, where the order of the letter in the alphabet codes for the order of the month in the year, so A becomes January. There are two components to an air conditioning system: the cooling coil or вЂњindoorвЂќ component, and the big gray or green outdoor unit, called a condenser.

Most people donвЂ™t know that if you want to add air conditioning to your home, your furnace has to be compatible with the new air conditioning system.

#Lennox serial number date code how to

Here how to read the old serial numbers York Serial Numbers 1971 - Oct. New Serial Number from October, 2004 to the present day New serial number formatlooks like this. Most furnaces have a useful and вЂњsafeвЂќ life between 15 and 20 years.В Knowing your furnace systemвЂ™s age is also important when it comes to the issue of connecting it to an air conditioning system. Old Serial Number from 1971 October, 2004 Old Serial Number formatlook like this: XBFM220710, EADM203490, and BKJM310394. Each of these brands have their own methods of identifying system age from serial numbers. The first 2 numbers stand for the factory location, the second 2 numbers are the year and the following letter is the month.

#Lennox serial number date code code

The most popular furnaces that have many years in the field include Carrier, Bryant, Lennox, Rheem and Goodman/Amana. How do you read a Lennox date code New Lennox serial numbers usually contain 4 numbers followed by a letter. Knowing your systemвЂ™s age is important because it can tell you a lot about whether you might be able to get by with furnace repairs or be forced to completely replace the heating system with a new one. First, it tells you in what year the furnace was manufactured, so you can supply that information when you need furnace repair or maintenance. If you live in San Diego, there are a number of benefits in knowing how to use your heating systemвЂ™s serial number.