Tech confirmed split system 13 is void of refrigerant. Tech also found mini split 2 to be not cooling due to being void of refrigerant. Jeff Cupp approved both leak searches. Tech found mini split 2 liquid line leaking from flare joint where it connects to outdoor unit. Tech inspected flare and found it good. Tightened until flare no longer leaks. Left nitrogen pressure on system as pressure test for ten minutes. Mini split passed nitrogen pressure test. System needs vacuum procedure and 2.5 lbs of R410a. Quoted $716.59 including tax over the phone to evacuate and recharge mini split 2. Locked out with nitrogen in system for now. Jeff Cupp wants repair proposal emailed. Tech added nitrogen pressure to system 13 and heard valve core on true suction line to be leaking. Tightened valve core and ensured valve core is no longer leaking. Saw nitrogen pressure still falling. Tech found no further leaks inside outdoor unit 13. Tech leak searched indoor air handler 13 and confirmed aluminu