As temperatures soar across India, a properly functioning car air conditioner is no longer a luxury, it is a necessity.

Samantha Hunter is a professional copy editor who has worked with Ms. Magazine, Spin and VH1. She has also written for MarthaStewart.com, Essence.com, Esquire.com, GoodHousekeeping.com, RealSimple.com ...

Last month we discussed air-conditioning troubleshooting and how you can diagnose many of these problems yourself, including: • The need to have the old refrigerant reclaimed and the new refrigerant ...