ACs use a refrigerant (commonly called "gas") that circulates through the system to absorb heat inside the room and expel it outside. Over time, due to small leaks, wear & tear, or sometimes during installation/repair work, the refrigerant level drops. When it’s low, the AC doesn’t cool well, takes longer to reach set temperature, or sometimes doesn’t cool at all. Gas filling (o... https://noidaallacservice.com