Mechanical for A/C Practice Test 2026 - Free HVAC Certification Practice Questions and Study Guide

The correct answer is recovery and recycling because, after the phase-out of chlorofluorocarbons (CFCs) under the Montreal Protocol, the remaining CFCs in circulation for servicing existing equipment must be sourced from recovered and recycled refrigerants.

Recovery involves capturing CFC refrigerants from equipment that is being decommissioned or serviced so that they can be reused. This method not only helps conserve existing supplies of CFCs but also minimizes environmental impacts associated with releasing these chemicals into the atmosphere. Recycling processes purify the recovered refrigerants, allowing them to be safely reused in existing systems.

In contrast, the other options do not align with the handling of CFCs post-1995. Solvent conversion refers to alternative methods of producing chemicals, which could divert focus from CFC servicing. While European and Third World chemical manufacturers might produce other refrigerants or chemicals, they are not the primary sources for servicing refrigerant needs specifically from CFC supplies after significant phase-outs. Hence, recovery and recycling became the primary means to manage existing CFC inventories after the regulations were implemented.