{"product_id":"carrier-py2pnb048090aa-capacitor-42kxl1","title":"OEM Carrier Single Run Capacitor 4 MFD 370V — PY2PNB048090AA","description":"\u003ch1\u003eOEM Carrier Single Run Capacitor 4 MFD 370V for Model PY2PNB048090AA\u003c\/h1\u003e\u003cp\u003eThis OEM single run capacitor is the factory-specified replacement for the \u003cstrong\u003eCarrier PY2PNB048090AA\u003c\/strong\u003e packaged unit. The run capacitor provides the phase-shifted electrical current needed to keep the condenser fan motor or compressor running efficiently at full speed. When this capacitor weakens or fails, you'll notice symptoms such as a humming condenser with no motor spin, tripped breakers, hard-starting, or warm air coming from your vents — all signs that the unit is struggling to maintain motor torque.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 4 MFD (microfarad) | 370 VAC rated | Oval case | OEM part numbers P291-0403 and P291-1503 | Cross-reference: 97F5704\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM capacitor built to exact factory tolerance (±5% MFD). Aftermarket alternatives often carry a ±10% tolerance, which can cause premature motor wear and shorten compressor life over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always discharge the capacitor before handling any terminals. Tools needed: flathead or Phillips screwdriver, needle-nose pliers, multimeter (to verify discharge). Photograph existing wiring before disconnecting. Match MFD and voltage ratings exactly before installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed to fit the \u003cstrong\u003eCarrier PY2PNB048090AA\u003c\/strong\u003e packaged unit. Always verify the MFD and voltage rating on your unit's data plate before ordering. Note: P291-0403 has been superseded in some distributions by P291-0404 — our team will confirm correct fitment before your order ships. Have questions? Contact our HVAC parts specialists for free fitment verification.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640536420723,"sku":"CARRIE-PY2PNB048090AA-CAPACITOR-P291-0403","price":21.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640536453491,"sku":"CARRIE-PY2PNB048090AA-CAPACITOR-P291-0403-GEN","price":18.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-P291-0403_aa95bbaf-f760-426d-8c50-be87f9c3e957.jpg?v=1775039264","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py2pnb048090aa-capacitor-42kxl1","provider":"National HVAC Parts","version":"1.0","type":"link"}