Bosch Reversing Valve

The Bosch reversing valve (also called a heat pump four-way valve or changeover valve) is an OEM replacement part for Bosch heat pump systems. It controls which way refrigerant flows through the system. That lets one unit heat in winter, cool in summer, and run defrost cycles.

Key Features:

• Genuine Bosch OEM replacement part, built to the same standards as the original component
• Switches refrigerant flow between heating and cooling modes
• Pilot-operated four-port design, with a solenoid coil that shifts the internal slide
• Copper sweat connections for brazing into the refrigerant circuit
• Helps restore full heat pump efficiency and dual-mode operation

A failing reversing valve can leave a heat pump stuck in one mode, or cause it to lose efficiency or capacity. Replacing it with a genuine Bosch part helps bring back reliable seasonal changeover. Installation should be done by a qualified HVAC technician who is certified to handle refrigerant.