{"product_id":"carrier-gb1aav042091adja-capacitor-42kwsk","title":"OEM Carrier Single Run Capacitor P291-0503 for GB1AAV042091ADJA","description":"\u003ch1\u003eOEM Carrier Single Run Capacitor P291-0503 for Model GB1AAV042091ADJA\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM single run capacitor (part number \u003cstrong\u003eP291-0503\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier GB1AAV042091ADJA\u003c\/strong\u003e gas furnace blower or condenser fan motor circuit. A single run capacitor provides the continuous phase-shifted current needed to keep a single-phase motor running at peak efficiency. When this capacitor fails, the affected motor may hum without starting, run sluggishly, overheat, or cause the system to short-cycle — leading to comfort loss and potential secondary component damage if left unaddressed.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Single run capacitor | OEM part P291-0503 | Factory-matched MFD rating and voltage | Round or oval case per OEM specification | ±5% tolerance for reliable motor protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM capacitor is manufactured to Carrier's exact electrical specifications. Aftermarket alternatives often carry a wider ±10% MFD tolerance, which can shorten motor life, reduce efficiency, and void equipment warranties. The OEM part ensures a precise factory match every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Capacitors store a lethal charge even after power is disconnected. Always discharge the capacitor using an insulated resistor or discharge tool before handling. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, and a multimeter to verify the old capacitor has failed. Photograph all wiring before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Backed by a 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before the daily cutoff ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eGB1AAV042091ADJA\u003c\/strong\u003e. Always confirm the MFD rating and voltage stamped on your existing capacitor or listed on the unit's data plate before ordering — using an incorrectly rated capacitor can damage the motor. If you're unsure of fitment, our HVAC parts specialists are available to verify compatibility before you buy. \u003cstrong\u003eOrder today and get same-day shipping — back to comfort faster.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909423911283,"sku":"CARRIE-GB1AAV042091ADJA-CAPACITOR-P291-0503","price":17.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909423944051,"sku":"CARRIE-GB1AAV042091ADJA-CAPACITOR-P291-0503-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-P291-0503_37c16a2a-45cc-4631-9504-633f109f1e70.jpg?v=1782936779","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb1aav042091adja-capacitor-42kwsk","provider":"National HVAC Parts","version":"1.0","type":"link"}