{"product_id":"carrier-fd3ana018005aaaa-capacitor-42kwsj","title":"OEM Carrier Single Run Capacitor P291-0504 for FD3ANA018005AAAA","description":"\u003ch1\u003eOEM Carrier Single Run Capacitor P291-0504 for Model FD3ANA018005AAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM single run capacitor (part number \u003cstrong\u003eP291-0504\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier FD3ANA018005AAAA\u003c\/strong\u003e fan coil unit. A single run capacitor is dedicated to one motor — typically the blower or condenser fan motor — providing the sustained electrical charge needed to keep it running at full efficiency. When this capacitor degrades or fails, common symptoms include a humming motor that won't start, intermittent shutdowns, reduced airflow, or a complete failure of the fan motor to spin. Left unaddressed, a failing capacitor places excessive strain on the motor windings and can lead to costly motor replacement.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM single run capacitor | Part No. P291-0504 | Factory-matched MFD and voltage rating | Round or oval case per OEM specification | ±5% tolerance as factory-specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier capacitor manufactured to exact factory tolerances. Aftermarket alternatives often carry ±10% MFD variance, which accelerates motor wear, reduces efficiency, and can void equipment warranties. For a unit like the FD3ANA018005AAAA, OEM is always the safest choice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always discharge the capacitor fully before handling. Recommended tools: 1\/4\" nut driver, insulated needle-nose pliers, and a multimeter capable of reading capacitance. Photograph all wiring connections prior to removal. Observe polarity markings if applicable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Backed by a 1-year OEM factory warranty. Orders placed before the daily cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed and verified for Carrier model \u003cstrong\u003eFD3ANA018005AAAA\u003c\/strong\u003e. Always confirm MFD rating and voltage against the data plate on your unit before ordering. If you need help verifying fitment, our parts specialists are available to confirm compatibility before you purchase. In stock and ready to ship today — get your system back up and running fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909521887603,"sku":"CARRIE-FD3ANA018005AAAA-CAPACITOR-P291-0504","price":17.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909521920371,"sku":"CARRIE-FD3ANA018005AAAA-CAPACITOR-P291-0504-GEN","price":13.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-round-single-P291-0504.jpg?v=1782936789","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fd3ana018005aaaa-capacitor-42kwsj","provider":"National HVAC Parts","version":"1.0","type":"link"}