{"product_id":"oem-goodman-refrigerant-piston-orifice-kit-for-ash130301ac-b1789865","title":"OEM Goodman Refrigerant Piston\/Orifice Kit for ASH130301AC — B1789865","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1789865 Piston (Orifice) Kit\u003c\/strong\u003e is the genuine OEM metering device for \u003cstrong\u003eASH130301AC\u003c\/strong\u003e heat pump systems. The fixed-orifice piston controls the precise rate at which liquid refrigerant flows into the coil, setting the pressure drop that governs cooling and heating capacity. A correctly sized piston is essential for proper superheat, subcooling, and rated efficiency.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1789865\u003c\/li\u003e\n\u003cli\u003ePart Type: Refrigerant metering piston \/ orifice\u003c\/li\u003e\n\u003cli\u003eBrand Compatibility: Goodman \u0026amp; Amana\u003c\/li\u003e\n\u003cli\u003eEquipment: Heat Pump\u003c\/li\u003e\n\u003cli\u003eModel Fit: ASH130301AC\u003c\/li\u003e\n\u003cli\u003eBore: Factory-matched to unit tonnage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOEM pistons are drilled to the exact bore diameter specified for your ASH13 unit's capacity. An incorrectly sized generic piston will flood or starve the coil, hurting efficiency and risking compressor damage. At this price point, the genuine OEM part is always the smart choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty: Advanced (Professional Recommended).\u003c\/strong\u003e The system must be recovered and opened at the liquid line\/coil connection to swap the piston, then evacuated and recharged. Requires EPA certification and refrigerant-handling tools.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058301256051,"sku":"GOODMAN-15996","price":6.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-refrigerant-piston-orifice-kit-for-ash130301ac-b1789865","provider":"National HVAC Parts","version":"1.0","type":"link"}