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OEM Carrier Dual Run Capacitor 45+5 MFD 370V — PH2PNB030000AB
Carrier

OEM Carrier Dual Run Capacitor 45+5 MFD 370V — PH2PNB030000AB

SKU: CARRIE-PH2PNB030000AB-CAPACITOR-P291-4553 Brand: Carrier
✓ Guaranteed to fit PH2PNB030000AB — or your money back. Terms

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OEM Carrier Dual Run Capacitor 45+5 MFD 370V for Model PH2PNB030000AB

This OEM dual run capacitor (part number P291-4553) is the factory-specified replacement for the Carrier PH2PNB030000AB packaged heat pump unit. The dual run capacitor stores and delivers the precise electrical charge needed to start and sustain both the compressor and condenser fan motor simultaneously. When this component fails, symptoms typically include a loud humming with no motor movement, the system short-cycling within minutes of startup, or the outdoor fan spinning sluggishly before tripping the high-pressure limit. Also included in this listing is the companion single run capacitor P291-1503 (15 MFD 370V oval), which independently powers the fan motor circuit on select configurations of this model. A failed single run capacitor typically causes the condenser fan to stop spinning while the compressor continues to run, rapidly overheating the refrigerant circuit.

  • Dual Run Cap Specs (P291-4553): 45+5 MFD (microfarad) | 370V rated | Oval case | ±5% factory tolerance | 50/60 Hz | UL approved pressure-sensitive current interrupter | Non-PCB dielectric fluid | RoHS compliant
  • Single Run Cap Specs (P291-1503): 15 MFD | 370V rated | Oval case | Factory Totaline/Carrier spec | Non-PCB dielectric fluid | UL approved
  • OEM vs Generic: OEM Carrier/Totaline capacitors are reliability-tested to 60,000 service hours per United Technologies application parameters, using high-grade metallized polypropylene film (5–12 microns thick). Generic capacitors often carry ±10% MFD tolerances, which accelerates motor winding wear and shortens compressor life — especially critical in packaged heat pump applications that run year-round.
  • Install Difficulty: 2/5 — Discharge the capacitor before touching any terminals (use an insulated screwdriver across terminals). Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (to verify MFD before and after). Always photograph existing wiring before disconnecting. Match the HERM, FAN, and COM terminals exactly to your old unit's wiring.
  • Warranty: 1-year OEM factory warranty. Leaves our warehouse same business day on orders placed before 3 PM local time.

Compatibility: Designed for Carrier model PH2PNB030000AB packaged heat pump units. Always verify the MFD rating and voltage on your unit's data plate before ordering — using an incorrect MFD value will damage the compressor or fan motor. Our fitment team is available to verify compatibility before you purchase. In stock and ships today — order now to get your system back online fast.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $99
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Capacitor fit my Carrier OEM Carrier Dual Run Capacitor 45+5 MFD 370V — PH2PNB030000AB?
Yes. This is the factory-specified OEM capacitor for the Carrier OEM Carrier Dual Run Capacitor 45+5 MFD 370V — PH2PNB030000AB. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the capacitor on my Carrier OEM Carrier Dual Run Capacitor 45+5 MFD 370V — PH2PNB030000AB?
Difficulty: Easy (20–30 min)
Step 1: Turn off power at breaker. Step 2: Open condensing unit panel. Step 3: Photograph the old capacitor wiring (Common/Herm/Fan). Step 4: Discharge old capacitor with insulated screwdriver. Step 5: Disconnect and remove old capacitor. Step 6: Mount new capacitor, reconnect wires to matching terminals. Step 7: Close panel, restore power, test. Tools: screwdriver, needle-nose pliers.
My AC hums but won’t start. What part do I need?
An AC that hums but won’t start is the classic symptom of a failed capacitor. The capacitor provides the electrical boost to start the compressor. When it fails, you hear humming but the motor can’t overcome inertia. Other symptoms: fan spinning slowly, AC cycling on/off rapidly, or a visibly swollen capacitor. Fix: replace capacitor ($15–$80 DIY, 30 min).
Is this capacitor compatible with Bryant or Payne too?
Many Carrier parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Carrier capacitor?
OEM strongly recommended. OEM capacitors have ±6% MFD tolerance vs aftermarket ±10%. The looser tolerance causes motor winding stress, higher temps, and shorter compressor life. Price difference is only $10–$20 — OEM is the clear value choice.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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