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The B1226207 is a genuine Goodman/Amana suction-line accumulator engineered for the APH1342M41CA packaged heat pump. Mounted on the condenser side of the refrigerant circuit, it traps liquid refrigerant during defrost and low-load conditions and meters it back to the compressor as vapor — a critical safeguard against liquid slugging that can destroy compressor valves and bearings. If your unit is short-cycling, showing compressor damage, or you are performing a compressor changeout, replacing the accumulator is strongly recommended.
This is a genuine OEM Goodman accumulator built to the exact internal volume and pickup-tube geometry the APH1342M41CA circuit was designed around. Generic universal accumulators can mismatch charge-holding capacity and oil-return behavior, risking compressor oil starvation. For a sealed-system component like this, OEM fit is the safe choice.
Advanced — EPA 608 certification required. Installation involves recovering the refrigerant charge, brazing new connections, pulling a proper vacuum, and recharging to spec. This is a job for a licensed HVAC technician, not a DIY repair.