When an air conditioning system loses its ability to cool properly, it may be necessary. The instructions for properly flushing the system are included with the kit.
If your AC isn't as cool as it used to be, you may need a R134a refrigerant recharge kit. AC does more than cool the air, it also dehumidifies and recirculates air .
Autozone and other car stores should sell the complete kit.. . se with 23k.. the Ac blew cold for about 3mins then blew warm.. they told me they .