What does Rear mean on car air conditioning?

[VonVivian]

Rear on a car's air conditioning system generally refers to the rear windshield defogger. Pressing this button can remove fog from the rear windshield. Below is an introduction to the car air conditioning system: 1. Introduction: The car air conditioning system is a device that cools, heats, ventilates, and purifies the air inside the vehicle compartment. It provides a comfortable environment for passengers, reduces driver fatigue, and improves driving safety. 2. Classification by drive method: Divided into independent type (uses a dedicated engine to drive the compressor, with large cooling capacity and stable operation, but high cost, large size and weight, mostly used in large and medium-sized buses) and non-independent type (the air conditioning compressor is driven by the car engine, with cooling performance significantly affected by engine operation and poor stability, mostly used in small buses and cars).