{"product_id":"carrier-pf1mnb042000aaaa-capacitor-42n3s0","title":"OEM Carrier Single Run Capacitor P291-1003 for PF1MNB042000AAAA","description":"\u003ch1\u003eOEM Carrier Single Run Capacitor P291-1003 for Model PF1MNB042000AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM single run capacitor (part number \u003cstrong\u003eP291-1003\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PF1MNB042000AAAA\u003c\/strong\u003e fan coil unit. The run capacitor maintains the continuous phase-shifted current needed to keep the blower motor running efficiently after startup. When the capacitor degrades or fails, common symptoms include a humming motor that won't spin, intermittent shutdowns, reduced airflow, or a blower that starts slowly and overheats — all signs of a capacitor that can no longer hold its rated charge.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Single run capacitor | Factory-matched MFD rating | 370V\/440V rated | Cylindrical case | ±5% OEM tolerance for precision motor protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier part engineered to exact factory specifications. Generic capacitors frequently ship with ±10% MFD variance, which accelerates motor winding wear and risks premature compressor or blower failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always discharge the capacitor fully before handling. Tools needed: 1\/4\" nut driver, insulated needle-nose pliers, and a multimeter to verify capacitance before and after replacement. Photograph all wiring connections before disconnecting terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock and ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the \u003cstrong\u003eCarrier PF1MNB042000AAAA\u003c\/strong\u003e fan coil unit. Always cross-reference the MFD and voltage ratings on your unit's data plate to confirm fitment before installation. Our HVAC parts specialists are available to verify compatibility before you order — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643342606707,"sku":"CARRIE-PF1MNB042000AAAA-CAPACITOR-P291-1003","price":56.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643342639475,"sku":"CARRIE-PF1MNB042000AAAA-CAPACITOR-P291-1003-GEN","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-P291-1003_eb924c87-8610-491a-835b-f0a9c86aeeb8.jpg?v=1775039738","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf1mnb042000aaaa-capacitor-42n3s0","provider":"National HVAC Parts","version":"1.0","type":"link"}