Refer to your manual or call the manufacture for the proper information.
The refrigerant (freon) in any air conditioner should last the life of the unit. If not, you have a leak.
nowhere
overcharging a central air unit system with refrigerant(freon) will cause the head pressure to be?
As much as went in. Not trying to be a smarta**, but there is no info on unit size or lineset length which are the 2 most determining factors of unit charge amount.
As much as the manufacturer says it should hold. They are all different.
depends on freon type,quanity,hourly rate of hvac co.
Yes.
A Freon leak can cause you headaches and nausea but not cause severe health issues. You should have the leak repaired by a qualified professional as soon as possible.
A reputable HVAC service Co. will locate and repair the leak and recharge your system.
How much freon does a 5 ton heat pump hold?
It means that the unit is low in freon and the line temperature is to low.
Never, unless you have a leak.