Lennox Serial Number. Lennox HVAC Age by Serial Number Pro HVAC Insights You can find the model and serial numbers (M/N and S/N) for your furnace by removing the top-front service panel and looking to the left side of the interior cabinet or the top of the blower deck, depending on whether your system is an 80% or 90% AFUE unit Lennox serial numbers typically consist of a combination of letters and numbers
Lennox serial number date bingerculture from bingerculture.weebly.com
These serial numbers date back to the 1960's but the current style has been used since 1974 on all Lennox HVAC equipment making serial number lookup and easy task . Using 5621M 99989 as an example, the first two digits (56) indicate which of Lennox's several manufacturing facilities produced the unit.
Lennox serial number date bingerculture
Month of manufacture can be determined by using the 5 th position (letter) of the serial number To determine other key specs of your HVAC system, see one of these other blog posts: Lennox air conditioner serial numbers are composed of 10 characters that follow a specific pattern
Lennox furnace serial number decoder liogc. The first two digits represent the year, while the next two digits represent the month of production. Example Lennox serial number styles: #5120L13681 (Ten (10) character Serial number begins with four (4) numerical digits followed by one (1) letter and ends with five (5) numerical digits.)
Lennox Model Number Nomenclature PDF. Lennox air conditioner serial numbers are composed of 10 characters that follow a specific pattern Also, the orientation (horizontal or vertical) and flow direction (down or up) of your furnace may impact the location of the information.