The model and serial number is located on the product's rating plate. The most common location for the tag is at the rear of the unit. Other locations include:
 

Window and Built-In Air Conditioners

 

  • Facing the unit, on the right side near the front.


Portable Air Conditioners

 

  • On the rear of the unit.


Ductless (split air) Air Conditioners

 

  • Underside of the access door on indoor wall unit.