A car's AC is a sealed system, so it shouldn't lose refrigerant in normal use. When it does, the cause is a leak at an O-ring, a service valve, a hose or the condenser. Proper AC gas refilling in Jumeirah starts by checking the system for leaks, because recharging without finding one only means paying for the same gas again later.
Once the system is confirmed tight or the leak is fixed, the remaining refrigerant is recovered with a machine, the system is put under vacuum to remove moisture, and it is recharged by weight to the amount stated for your car. Too little gas cools poorly; too much strains the compressor.
Newer cars often use R1234yf while many older models use R134a, and the two are not interchangeable. We confirm which one your car needs from the label under the bonnet before any work. The refill can often be done where the car is parked, while larger leak repairs are booked into the workshop.