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OEM Carrier Run Capacitor P291-3554 for HA1AJX018000ABAA
Carrier

OEM Carrier Run Capacitor P291-3554 for HA1AJX018000ABAA

SKU: carrier-run-capacitor-ha1ajx018000abaa Brand: Carrier
$34.95

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Carrier Run Capacitor P291-3554 for HA1AJX018000ABAA

This OEM Carrier dual run capacitor (P291-3554RS) is the genuine factory replacement for the Carrier HA1AJX018000ABAA 1.5-ton condensing unit. The run capacitor stores and delivers the phase-shifted current that both the compressor and condenser fan motor need to run smoothly and efficiently. A weak or bulging capacitor is the single most common cause of a unit that hums but won't start, a fan that won't spin, or a compressor that draws high amps and trips the breaker. This dual-rated capacitor matches the original microfarad (MFD) and voltage ratings for the HERM and FAN terminals, ensuring correct motor torque and amp draw. Replacement is a beginner-to-moderate job, but the capacitor holds a dangerous charge: cut power, discharge it safely, then transfer leads to matching terminals. Genuine OEM rating prevents the overheating and early failure seen with mismatched universal caps. In stock and ready to ship. Orders placed before 3PM CST ship the same business day. Fitment guaranteed for the HA1AJX018 series condensing unit.

Compatibility

This part is compatible with Carrier model HA1AJX018000ABAA.

Shipping

Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.

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 $75
  • 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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Run Capacitor fit my Carrier HA1AJX018000ABAA?
Yes. This is the factory-specified OEM run capacitor for the Carrier HA1AJX018000ABAA. 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 run capacitor on my Carrier HA1AJX018000ABAA?
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 run 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 run 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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