none, unless it is leaking, and then it needs to be found and repaired
I just had 2 pounds of Freon added to my central A/C and was charged $30 a pound.
nowhere
Refer to your manual or call the manufacture for the proper information.
depends on freon type,quanity,hourly rate of hvac co.
How much freon does a 2010 Peterbilt
It depends on what kind of freon you need.
depemds on the car as how much freon it will hold. some cars have a tag saying how much freon the car is filled with. Too much freon is just as bad as not enough freon.
2.50 pounds of freon.......
.9 lbs of freon
1.88 pounds of 134
How much freon does a 5 ton heat pump hold?
how much freon does a 2004 kia soenrto 3.5 hold for a/c