AC Refrigerant Recharge: What It Is and Why Your System Needs It If your air conditioner suddenly stops cooling the way it used to, most people assume the unit is getting old or something major has failed. That is not always true. In many cases, the issue is something simpler like low refrigerant. This is where an ac refrigerant recharge comes into play. Read more : https://www.serviceplus.com/blog/ac-refrigerant-recharge-what-it-is-and-why-your-system-needs-it