Safety is not the real concern here. The EPA mandates all refrigerant. This means that they only allow a "de minimis" release into the atmosphere. To properly remove refrigerant from a system you need to recover it into an EPA certified recovery tank. Fines for venting a system into the atmosphere go up to 50,000 US dollars.
overcharging a central air unit system with refrigerant(freon) will cause the head pressure to be?
The refrigerant (freon) in any air conditioner should last the life of the unit. If not, you have a leak.
Yes.
nowhere
It means that the unit is low in freon and the line temperature is to low.
Never, unless you have a leak.
Refer to your manual or call the manufacture for the proper information.
Dont get caught, or you need a special recovery unit.
There are a few reasons why a central air unit is not blowing cold air. The coils may be dirty, the unit may need freon, or the thermostat could be broken.
yes, older units could take between 9 and 15 lbs of freon most take about 12
depends on freon type,quanity,hourly rate of hvac co.
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.