Air conditioning recharge for car
If you have a car that isn't showroom fresh anymore, there's also a good chance it's lost a little of its air conditioning mojo. Get things icy cool again with this simple fix.
First, a disclaimer. If your air conditioning is completely dysfunctional and doesn't cool the air at all when it's on, it's probably best to brave the bill and go get it checked out by a professional. On the other hand, if your air conditioner is functional but lacks the frosty punch it used to have, you can easily recharge the coolant and get things back to their previous knuckle-freezing glory.
How-to site wikiHow features a step-by-step guide to recharging the refrigerant in your car's cooling system. The tutorial includes some pretty stern (and justifiably so) warnings, but speaking from experience—I've recharged around a dozen vehicles both for myself and friends—it's a really straightforward tune as long as you follow the instructions.
A few things we'd recommend should you decided to recharge your air conditioning: Put a meat thermometer in the vents to get a baseline temperature so you can see if your recharge job lowers the temp enough, and spend the extra few bucks to get a pressure valve so you're not left guessing if you're under or overpressurizing your system.