{"product_id":"oem-goodman-piston-restrictor-kit-for-ssx140241ac-b1789857-1","title":"OEM Goodman Piston\/Restrictor Kit for SSX140241AC — B1789857","description":"\u003ch2\u003eGoodman B1789857 Piston \/ Restrictor Kit\u003c\/h2\u003e\u003cp\u003eThis genuine OEM Goodman \u003cstrong\u003eB1789857\u003c\/strong\u003e piston kit is the factory refrigerant metering device (fixed-orifice restrictor) used with \u003cstrong\u003eSSX140241AC\u003c\/strong\u003e 14 SEER, 2-ton air conditioning systems. The piston meters refrigerant flow into the evaporator coil at the precise orifice size the system is engineered for, which is essential for correct superheat\/subcooling, rated capacity, and efficiency. Installing the correct OEM piston is critical whenever a coil is replaced or a system is matched, because an incorrect orifice size directly degrades cooling performance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1789857\u003c\/li\u003e\n\u003cli\u003ePart Type: Piston \/ fixed-orifice metering device (restrictor kit)\u003c\/li\u003e\n\u003cli\u003eFits Model: SSX140241AC (Goodman 14 SEER, 24,000 BTU AC)\u003c\/li\u003e\n\u003cli\u003eFunction: Meters refrigerant flow to the evaporator coil\u003c\/li\u003e\n\u003cli\u003eApplication: Coil replacement and system matching\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003ePiston orifice sizing is calibrated to the specific equipment match. The OEM B1789857 guarantees the exact bore the system was designed around. Generic or mis-sized pistons can cause flooding, starving, poor efficiency, or compressor stress. For a metering component, using the factory-specified part is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eAdvanced — professional recommended.\u003c\/strong\u003e Replacing a piston requires opening the sealed refrigerant circuit: recover refrigerant, replace the piston in the line set\/coil fitting, evacuate, and recharge. This is EPA-regulated work and should be performed by a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057204412787,"sku":"GOODMAN-864","price":10.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-piston-restrictor-kit-for-ssx140241ac-b1789857-1","provider":"National HVAC Parts","version":"1.0","type":"link"}