The automotive air conditioning compressor is responsible for moving gas between the condenser (or evaporator) and the vehicle's thermostat. It is, however, often seen as the heart of the system. If this belt-driven device fails to perform its task, the whole system will stop functioning properly.
The automotive air conditioning compressor is usually attached to the engine of your car and driven by a belt. A loose or damaged belt can cause an automotive air conditioning compressor failure.
Image source: Google
This causes a lower pressure and gas transfer to other parts of the system. The vehicle's air conditioning system is similar to your home's air conditioner. It has three major components: the compressor, condenser, and evaporator.
Freon gas is contained in the vehicle's closed system. The automotive air conditioning compressor presses the gas to make it hot and high-pressure. It then forces the gas into the condenser. This looks like a radiator. It is forced through an extension valve and evaporates into Freon gas at low pressure.
The vehicle's evaporator then passes the cold gas through coils. The coils are cooled by a fan that blows across them. Once inside the vehicle, the gas absorbs heat and is sent back through the compressor to restart the cycle. Unintentional gas escapes from the system can lead to inefficiency.
It is normal for water to drip from the drain of the vehicle's condenser when it is running. Condensed water from the window units of your house's air conditioner units will drop to the ground. This is part of their normal operation.