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The Goodman B1226207 is a genuine OEM suction-line accumulator for the WPH4342AMAB packaged heat pump. Positioned on the compressor suction side, it traps liquid refrigerant and oil during defrost and low-load conditions, metering it back to the compressor as vapor. This prevents damaging liquid slugging — a critical role on heat pumps that reverse the refrigerant cycle.
The OEM B1226207 is sized to the exact volume, port configuration, and oil-return orifice your heat pump requires. Undersized or mismatched aftermarket accumulators can flood the compressor or starve it of oil. Given its direct link to compressor survival, the genuine OEM part is the recommended choice.
Difficulty: Advanced — Requires refrigerant recovery, brazing in the correct orientation, evacuation, and recharge by an EPA-certified technician. Not a DIY job. Always recover refrigerant properly and flow nitrogen while brazing.