Robinair (AC1234-6 1234YF Standard and Hybrid A/C Service Machine Robinair's AC1234-6 was the first commercially available machine to fully meet the SAE requirement for recovering, recycling, and recharging vehicle A/C systems that use the new R1234YF refrigerant Services standard and hybrid vehicle A/C systems with fully automatic operation - program for service, walk away, and return when complete - done Comes with an integrated refrigerant identifier that samples the refrigerant in the vehicles A/C system prior to recovery Highly accurate and reliable machine offers 95% recovery efficiency 1/3 HP motor; 103-127V; 60Hz AC operating voltage; shipped with empty onboard tank - no freon included