The Lone Star State can be brutal when it comes to hot weather in the summer. The temperature is often completely unpredictable during the hot months, reaching or exceeding highs of up to 100 degrees Fahrenheit. Air conditioning is often something that is necessary if you plan on driving without having to worry about becoming sweaty. In addition, passengers are much more susceptible to get heatstroke in cars without a properly working A/C unit.

The most common reason why A/C units do not work or work well is due to having little or no refrigerant. Refrigerant is a …