repaircon
Moderator: RichardW
what you need to do is evacuate the air con ie: pull a vacuum down to 250 microns to be sure no moisture is in the circuit and if you pull that sort of vacuum you wont have any leaks then there is the difference in evaporating temps of the different gas if you want a direct ozone friendly replacement there is what is known as a direct drop in gas called klea 409a