Where does the low pressure refrigerant vapor go after leaving the reversing valve in cooling mode?

In cooling mode, after the refrigerant exits the reversing valve, it is in a low-pressure vapor state. The correct pathway for this low-pressure refrigerant vapor is to go to the indoor coil. Here, it absorbs heat from the indoor air, causing the refrigerant to change phase from a low-pressure vapor to a low-pressure liquid before moving to the expansion valve.

The accumulator is typically part of a heat pump or air conditioning system that helps manage excess liquid refrigerant. It primarily works in conjunction with the compressor and is more relevant in specific system designs, especially when the refrigerant is in a low-pressure liquid state. The expansion valve is a critical component that allows the refrigerant to expand, lowering its pressure further and preparing it for the evaporation process within the indoor coil but does not receive vapor directly from the reversing valve in cooling mode. The outdoor coil is where the refrigerant releases heat and is engaged in the heating mode. Hence, the pathway to the indoor coil for the low-pressure vapor is essential for effective cooling.