{"product_id":"oem-goodman-refrigerant-piston-kit-for-anz130241ac-b1789857","title":"OEM Goodman Refrigerant Piston Kit for ANZ130241AC — B1789857","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1789857 Piston (Flow Restrictor) Kit\u003c\/strong\u003e is a genuine OEM refrigerant metering device sized as an exact-fit replacement for the \u003cstrong\u003eANZ130241AC\u003c\/strong\u003e heat pump. The piston seats inside the liquid line orifice housing and meters refrigerant flow into the coil during cooling, while allowing free bypass flow in heating mode. Using the correct piston bore is critical: an oversized or undersized orifice will flood or starve the coil, killing capacity and efficiency.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart Number: B1789857\u003c\/li\u003e\n\u003cli\u003eType: Refrigerant metering piston \/ flow restrictor\u003c\/li\u003e\n\u003cli\u003eEquipment: Heat Pump\u003c\/li\u003e\n\u003cli\u003eFit: ANZ130241AC and compatible Goodman\/Amana systems\u003c\/li\u003e\n\u003cli\u003eBore: Factory-matched to unit tonnage\u003c\/li\u003e\n\u003cli\u003eIncludes: Piston insert (Teflon seal check before install)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe factory Goodman piston is drilled to the precise bore your condenser and coil were rated with. Generic pistons are sold in bore ranges that may be a step off, leaving your system slightly under- or over-fed. For a low-cost part with outsized impact on performance, the exact OEM bore is the right call.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eAdvanced — HVAC technician required.\u003c\/strong\u003e Access requires recovering refrigerant, opening the liquid-line orifice housing, swapping the piston, then evacuating and recharging to spec. EPA Section 608 certification is required for refrigerant work.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058265407859,"sku":"GOODMAN-15151","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-refrigerant-piston-kit-for-anz130241ac-b1789857","provider":"National HVAC Parts","version":"1.0","type":"link"}