To do this legally, yes you need to have them evacuate it if it uses R12. R134A can be vented to the atmosphere. They will need to take it down to deep vacuum when you recharge regardless of which...
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To do this legally, yes you need to have them evacuate it if it uses R12. R134A can be vented to the atmosphere. They will need to take it down to deep vacuum when you recharge regardless of which...