{"product_id":"oem-goodman-piston-restrictor-kit-for-anz130241ab-b1789857","title":"OEM Goodman Piston \/ Restrictor Kit for ANZ130241AB — B1789857","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1789857\u003c\/strong\u003e is a genuine OEM piston (flowrator\/restrictor) kit for the \u003cstrong\u003eANZ130241AB\u003c\/strong\u003e heat pump. The piston is the fixed-orifice metering device that regulates refrigerant flow into the coil. A correctly sized piston is essential for proper superheat, subcooling, and rated efficiency — the wrong orifice starves or floods the coil and kills performance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Fixed-orifice piston \/ flowrator kit\u003c\/li\u003e\n\u003cli\u003eApplication: Refrigerant metering device\u003c\/li\u003e\n\u003cli\u003eFits equipment: Goodman ANZ130241AB heat pump\u003c\/li\u003e\n\u003cli\u003eIncludes: Piston with factory-specified orifice bore\u003c\/li\u003e\n\u003cli\u003eType: OEM replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e piston is bored to the exact orifice diameter Goodman engineered for this coil and tonnage. Generic or universal pistons may be off by a few thousandths of an inch, which is enough to cause improper metering, high head pressure, or poor capacity. For a metering device, precise OEM sizing matters — always match the factory part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eProfessional \/ Advanced\u003c\/strong\u003e — Requires opening the sealed refrigerant circuit: recover refrigerant, disassemble the liquid-line\/distributor fitting, swap the piston, reassemble with a new seal, evacuate, and recharge to nameplate. EPA 608 certification required. Recommended for a licensed HVAC technician, not DIY.\u003c\/p\u003e\u003cp\u003eVerify your model and serial number before ordering. Contact info@nationalhvacparts.com with questions.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058265342323,"sku":"GOODMAN-15147","price":9.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-piston-restrictor-kit-for-anz130241ab-b1789857","provider":"National HVAC Parts","version":"1.0","type":"link"}