(Package may vary) Note: Refrigerants can be mixed to make one pallet. Contact us to get a quote! 30 LB R134a Automotive is 1/2 and HVAC is 1/4 are the same, Same freon only difference is the adapter size. R134a tetrafluoroethane is an inert gas used primarily as a "high-temperature" refrigerant for domestic refrigeration and automobile air conditioners. R-134A is the global standard for new mobile air conditioning and can be utilized to retrofit existing R-12 mobile air conditioning systems. Other uses include plastic foam blowing (as a cleaning solvent), a propellant for the delivery of pharmaceuticals, wine cork removers, gas dusters and in air driers for removing the moisture from compressed air.