1. Autos
Send to a Friend via Email

Your suggestion is on its way!

An email with a link to:


was emailed to:

Thanks for sharing About.com with others!

You can opt-out at any time. Please refer to our privacy policy for contact information.

How To Recharge Your Air Conditioner with Freon


10 of 10

Wrapping It Up
Reading the gauge.

This system reads a low 10 pounds, so keep adding.

photo by Matt Wright, 2008
Keep an eye on the gauge as you fill and you'll get the right amount of refrigerant in. Don't worry if you are off by a few pounds, it's not a big deal. The gauge in the above photo only reads 10 pounds, so this system was very low on refrigerant. Fill it to the proper level and you'll have cold AC once again.

When you're finished filling, don't forget to put the cap back on the low pressure port to keep gunk out. Even if the can is empty, hold on to the pressure gauge because not only can it be used to check your AC system pressure, next time you add refrigerant you will only have to buy the can!

  1. About.com
  2. Autos
  3. Auto Repair
  4. Regular Maintenance
  5. Don't Overfill the Air Conditioning System

©2014 About.com. All rights reserved.