I am not entirely sure what you mean by "30 PSI gas" in your air conditioner. It is crucial to handle refrigerant gases and air conditioning systems safely and responsibly, as they can be potentially hazardous to the environment and your health if mishandled.
If you suspect that your air conditioner is low on refrigerant or not cooling effectively, the best course of action is to contact a licensed HVAC technician or a qualified professional to inspect and service your air conditioning system. They have the expertise and tools necessary to diagnose any issues, identify potential leaks, and safely handle refrigerant.
When it comes to refilling refrigerant, it is generally not a simple task that can be done by non-professionals. In many places, handling refrigerant gases requires specific certifications due to environmental regulations and safety concerns. Attempting to refill refrigerant without the appropriate training and equipment can be dangerous and illegal.
Refrigerant leaks in air conditioners should be addressed promptly by a qualified technician. They will repair the leak, test the system for proper operation, and then, if necessary, recharge the system with the correct amount of refrigerant following established procedures.
Remember, proper maintenance and servicing of your air conditioner by trained professionals will help keep it running efficiently, extend its lifespan, and ensure safe operation.