What is the fluid in car air conditioning called?

The fluid used in car air conditioning is called refrigerant. Refrigerant is a chemical compound that circulates through the air conditioning system and absorbs heat from the air inside the car. The refrigerant then travels through the condenser, where it is cooled down, and then through the evaporator, where it absorbs heat from the air again. This cycle repeats itself until the air inside the car is cooled down to the desired temperature.

There are different types of refrigerants used in car air conditioning systems. The most common type of refrigerant is R-134a, which is a hydrofluorocarbon (HFC). HFCs are not harmful to the ozone layer and are therefore more environmentally friendly than other types of refrigerants. However, R-134a is a greenhouse gas and contributes to climate change.

Newer cars are starting to use a new type of refrigerant called R-1234yf, which is a hydrofluoroolefin (HFO). HFOs are not harmful to the ozone layer and have a lower global warming potential than HFCs. However, R-1234yf is more expensive than R-134a.

It is important to note that refrigerants are hazardous chemicals and should only be handled by trained professionals. If you need to have your car air conditioning system serviced, be sure to take it to a qualified technician.