For a HCFC-22 appliance or isolated component normally containing more than 200 pounds of refrigerant, what is the required recovery level after November 15, 1993?

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Understanding how this works means focusing on how deeply the appliance must be evacuated during recovery. For large systems—those normally containing more than 200 pounds of refrigerant—the rule set after November 15, 1993 requires you to recover refrigerant until the system reaches a vacuum of 10 inches of mercury or lower. Reaching this level helps ensure most of the refrigerant is removed and captured, reducing emissions when the appliance is serviced or disposed. A perfect vacuum (0 inches) isn’t mandated, and shallower or deeper vacuums (like 4 or 15 inches) don’t align with the specified requirement. So, evacuating to 10 inches of mercury or lower is the correct standard.