{"product_id":"carrier-ph1pna036000aaba-capacitor-42nx40","title":"OEM Carrier Dual Run Capacitor 40+5 MFD 370V for PH1PNA036000AABA","description":"\u003ch1\u003eOEM Carrier Dual Run Capacitor 40+5 MFD 370V for Model PH1PNA036000AABA\u003c\/h1\u003e\u003cp\u003eThis OEM dual run capacitor (part number \u003cstrong\u003eP291-4053\u003c\/strong\u003e, superseded by P291-4054RS) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH1PNA036000AABA\u003c\/strong\u003e packaged heat pump unit. The dual run capacitor stores and releases the electrical charge needed to start and sustain both the compressor and condenser fan motor simultaneously. A failing capacitor is one of the most common causes of HVAC system failure — symptoms include an audible hum with no motor movement, a compressor that kicks on but immediately shuts off, or a condenser fan that spins slowly or not at all. Also included is the companion \u003cstrong\u003esingle run capacitor P291-1503\u003c\/strong\u003e (15 MFD 370V oval), which independently supports the blower or auxiliary motor circuit on this unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Capacitor Specs (P291-4053 \/ P291-4054RS):\u003c\/strong\u003e 40+5 MFD (microfarad) | 370V rated | Oval case | ±6% tolerance | 50\/60 Hz | 10,000 AFC | Castor oil protected dielectric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Capacitor Specs (P291-1503):\u003c\/strong\u003e 15 MFD | 370V | Oval case | Single run | Non-PCB dielectric fluid | UL-approved current interrupter | Multiple electrical terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Carrier capacitors are manufactured to exact factory tolerances (±6% MFD). Generic aftermarket units commonly run ±10% or worse, accelerating compressor and motor wear and shortening system lifespan. OEM is always the right choice for warranty-sensitive or commercial installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always discharge the capacitor fully before handling — stored charge can cause serious injury. Tools needed: 1\/4\" nut driver, insulated needle-nose pliers, multimeter (capacitance mode). Photograph all wiring connections before disconnecting. Note: P291-4053 is superseded by P291-4054RS (440V round); verify your unit's data plate before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory 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 for the \u003cstrong\u003eCarrier PH1PNA036000AABA\u003c\/strong\u003e packaged heat pump (3-ton, R-410A). OEM part numbers P291-4053 (dual run, 40+5 MFD 370V oval) and P291-1503 (single run, 15 MFD 370V oval). Always verify MFD rating and voltage on your unit's data plate before ordering. Our team is available to confirm fitment — call or chat before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641615602035,"sku":"CARRIE-PH1PNA036000AABA-CAPACITOR-P291-4053","price":30.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641615634803,"sku":"CARRIE-PH1PNA036000AABA-CAPACITOR-P291-4053-GEN","price":26.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-P291-4053_bd791595-eee7-46cc-8f37-8aa9f65880d0.jpg?v=1775028620","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph1pna036000aaba-capacitor-42nx40","provider":"National HVAC Parts","version":"1.0","type":"link"}