A reversing valve is a key component in heat pump systems and some air conditioning systems. Its primary function is to reverse the flow of refrigerant, allowing the system to either heat or cool a space. ### How it Works: - **Cooling Mode**: When the heat pump is in cooling mode, the reversing valve directs the refrigerant to flow through the evaporator coil inside the building, where it absorbs heat, and then to the condenser coil outside, where it releases heat.
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