{"product_id":"oem-goodman-piston-flowrator-kit-for-asz130361ab-b1789868","title":"OEM Goodman Piston \/ Flowrator Kit for ASZ130361AB — B1789868","description":"\u003ch2\u003eGoodman B1789868 Piston (Flowrator) Kit\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003eB1789868\u003c\/strong\u003e is a factory-original refrigerant metering piston kit for the \u003cstrong\u003eASZ130361AB\u003c\/strong\u003e and compatible Goodman\/Amana heat pumps. The piston (also called a flowrator or orifice) sits at the indoor or outdoor coil and precisely meters refrigerant flow to match the system's rated capacity. Because heat pumps reverse between heating and cooling, using the correctly drilled piston is essential to proper subcooling, superheat, and efficiency. Installing the wrong bore size can starve or flood the coil and quietly wreck system performance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1789868\u003c\/li\u003e\n\u003cli\u003eType: Fixed-orifice refrigerant metering piston \/ flowrator\u003c\/li\u003e\n\u003cli\u003eFits: Goodman \u0026amp; Amana ASZ130361AB heat pump (and matched coil combinations)\u003c\/li\u003e\n\u003cli\u003eBore: Factory-calibrated to the unit's rated tonnage\u003c\/li\u003e\n\u003cli\u003eIncludes: Piston element for the metering device housing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e piston is drilled to the exact factory bore diameter for this equipment match, guaranteeing correct refrigerant charge and efficiency. Generic assortment pistons force the tech to guess the bore and risk capacity and reliability problems. At this price, OEM removes all doubt.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eAdvanced (4\/5).\u003c\/strong\u003e Requires recovering refrigerant, opening the metering device, swapping the piston, then evacuating and recharging the system. This is EPA 608–certified technician work — not a DIY job.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058307678579,"sku":"GOODMAN-16227","price":14.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-piston-flowrator-kit-for-asz130361ab-b1789868","provider":"National HVAC Parts","version":"1.0","type":"link"}