In very few instances, this can happen, yes.
As a standard part of an Air-Con Regas, the system is tested to ensure it can hold a vacuum, which is a negative air pressure of approximately -14.5psi.
However, if the air conditioning system has not been maintained with regular servicing, then some of the hoses and connections may have dried out and become brittle. As such, after a Regas when the system is operating at around 80 psi positive pressure, a leak might develop due to the increased gas pressure.
If this happens, we can perform a high-pressure test by completely emptying the air conditioning system and pressurising with using Oxygen Free Nitrogen (OFN). High-pressure testing is a chargeable service.
Once the leak has been identified and fixed by us (or a 3rd party we approve), we will perform the 2nd Air-Con Regas free of charge to ensure your Air Conditioning is working correctly.