There is no reason to re-gas on a correctly installed air conditioner.Some of the reasons why you might have a gas leak causing you heating/cooling issues are:
1]Incorrectly installed air conditioner
2]Faulty system from the manufacturer
3]Coil corrosions caused by lack of maintenance
4]Faults caused by a technician not servicing responsibly
5]Rodent or storm damage
6]Moving, bumping, or relocating the system
Re-gassing a system refers to replenishing the air conditioning system with fresh refrigerant
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