Nexus 5 - How to downgrade from Android 5.0 Lollipop to Android 4.4.4 KitKat.
The cost to replace Freon varies by the amount needed since it is charged by the pound. The typical charge starts with an $89 service call to visit the home and inspect your AC system. From there, the cost to add Freon is $68 for the first pound and $58 for each pound thereafter.
But for someone that has no prior knowledge or experience of Freon removal, 2-3 days of training may be necessary. $500-$1,440 Assuming an average training time of 2 days, 8hr/day Participant cost: The cost is $80-$150/student.