Why???

Arizona is hot and it pains me to see someone driving with kids in the car in severe heat.  I always feel terrible and maybe even guilty with my AC ice cold and blowing hard and the car next to me has kids or maybe even a baby in the back seat and you can see the beads of swear on their face.    A lone time ago it was me in the back seat with no AC.

Whats the cost?

Zero but i cant fix every ac or even a lot of them.   Im offering to charge your ac, not replace the AC compressor or equipent.  You would be amazed to find out how many ac units in cars can be fixed with a $20 bottle of freon.  The repair shops wont tell you this but its very often the situation.