How do I recharge a car air conditioner?

This is not something that you can do yourself unless you have tools and know what you are doing.

Freon is under pressure and can cause an explosion or/ and a fire.

Take it to a reputable shop and have them evaporate the system and charge it.

Later on, you can buy tools and learn from books and a friend who has experience with air conditioning.

125. is a reasonable rate.

Be safe Don't be a complete idiot like Mike who just sends you to Walmart to get freon and hurt yourself. He's shouldn't be giving advice, you're gonna get hurt if you don't know what you are doing even ruin the system if you put too much in like bend the neck on the compressor. You need a pressure gauge. Also, it's really important that you know the difference between the low pressure side and high pressure. I would take it in and have it professionally serviced. Later on you can pick up some basic knowledge. Good Luck!

well...both of the other guys have valid points.

It IS easy if you know what you are doing.

HOWEVER, if you don't know, you can hurt

yourself, your car, and the environment.

So, for an initial investment of say, $200....you should be able to find a mechanic

who will show you the proper way to do the job, and the proper tools to do it with.