Carrier EF17BZ255 Reversing Valve Heat Pump OEM Replacement

The Carrier EF17BZ255 is an OEM reversing valve designed for use in Carrier heat pump systems. The reversing valve — also known as a four-way valve — is a critical refrigeration component that controls the direction of refrigerant flow, allowing the system to switch between heating and cooling modes.

Key Features:

• OEM Carrier replacement reversing valve
• Controls refrigerant flow direction for dual-mode heating and cooling operation
• Designed for compatibility with select Carrier heat pump units
• Engineered to OEM specifications for reliable, long-term performance
• Direct replacement for failed or leaking reversing valves

The reversing valve operates via a solenoid pilot valve that shifts a slide mechanism inside the valve body, redirecting refrigerant between the outdoor coil and indoor coil. A faulty reversing valve commonly causes a heat pump to get stuck in one mode or fail to heat or cool effectively. Replacing with a genuine Carrier part helps ensure proper system operation and refrigerant integrity.