{"product_id":"oem-goodman-refrigerant-piston-flowrator-kit-for-anz130361aa-b1789871","title":"OEM Goodman Refrigerant Piston \/ Flowrator Kit for ANZ130361AA — B1789871","description":"\u003ch2\u003eGoodman B1789871 Piston Kit\u003c\/h2\u003e\u003cp\u003eThe B1789871 is a genuine OEM refrigerant piston (flowrator) kit for Goodman \u003cstrong\u003eANZ130361AA\u003c\/strong\u003e heat pumps. This precision-machined metering orifice controls refrigerant flow into the evaporator or condenser coil, setting the system's superheat and ensuring proper heating and cooling capacity. A worn, clogged, or incorrectly sized piston causes poor performance, freeze-ups, and high energy use.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1789871\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Refrigerant Piston \/ Flowrator Metering Device\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e ANZ130361AA (Heat Pump)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Fixed-orifice refrigerant metering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM\u003c\/strong\u003e piston is bored to the exact orifice size specified for this tonnage, guaranteeing correct charge and superheat. Generic pistons in the wrong bore size will de-rate capacity or trip pressure faults.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eAdvanced (4\/5).\u003c\/strong\u003e Requires recovering refrigerant, opening the liquid-line\/piston housing, swapping the orifice, evacuating, and recharging. Licensed HVAC technician and EPA certification required.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058265768307,"sku":"GOODMAN-15168","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-refrigerant-piston-flowrator-kit-for-anz130361aa-b1789871","provider":"National HVAC Parts","version":"1.0","type":"link"}