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OEM Carrier Dual Run & 25+5 MFD Start Capacitor Kit for PH12NA018000AAAA
OEM Carrier Dual Run & 25+5 MFD Start Capacitor Kit for PH12NA018000AAAA
OEM Carrier Dual Run & 25+5 MFD Start Capacitor Kit for PH12NA018000AAAA
OEM Carrier Dual Run & 25+5 MFD Start Capacitor Kit for PH12NA018000AAAA
Carrier

OEM Carrier Dual Run & 25+5 MFD Start Capacitor Kit for PH12NA018000AAAA

SKU: CARRIE-PH12NA018000AAAA-CAPACITOR-P291-2553RS Brand: Carrier
✓ Guaranteed to fit PH12NA018000AAAA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Dual Run & Start Capacitor Kit — P291-2553RS + P281-1896S for PH12NA018000AAAA

This factory-matched OEM capacitor kit includes both the dual run capacitor (P291-2553RS) and the start capacitor (P281-1896S) specified for the Carrier PH12NA018000AAAA heat pump. The dual run capacitor continuously powers both the compressor and condenser fan motor, while the start capacitor delivers the short-duration high-torque boost needed to get the compressor spinning under load. When either fails, symptoms range from a humming outdoor unit that won't start, to hard-start trips, nuisance breaker faults, or a compressor that runs briefly then shuts down on thermal overload. Replacing both together is the industry-standard practice — if one has failed, the other is under stress.

  • Dual Run Capacitor Specs (P291-2553RS): 25+5 MFD (microfarad) | 370 VAC | Round case | ±3% OEM tolerance | Replaces HC98JA026, HC98CA026, HC98CA025, P291-2553R, GE 97F9803
  • Start Capacitor Specs (P281-1896S): 189–227 MFD | 330 VAC | Round case | 50/60 Hz | Replaces 092A189B330CE7X, P2811896S — provides the hard-start current surge to protect compressor windings
  • OEM vs Generic: Genuine Carrier OEM capacitors are manufactured to exact factory MFD tolerances (±3%), ensuring proper motor starting torque and run characteristics. Off-brand capacitors commonly ship at ±10% tolerance, accelerating compressor wear and voiding manufacturer warranty on newer units.
  • Install Difficulty: 2/5 — Always discharge capacitors fully before handling (use a 20kΩ resistor or insulated discharge tool). Tools needed: 1/4" nut driver, needle-nose pliers, multimeter with capacitance mode. Photograph all wiring before disconnecting. Verify MFD and voltage ratings on the unit data plate before installing.
  • Warranty: 1-year OEM factory warranty on both components. Orders ship same business day from our warehouse when placed before 3PM local time.

Compatibility: This kit is the factory-specified replacement for Carrier PH12NA018000AAAA 1.5-ton heat pump condensers. Both capacitors should be verified against your unit's data plate — confirm 25+5 MFD/370V for the dual run and 189–227 MFD/330V for the start capacitor before installation. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you order — contact us before purchasing if you have any questions.

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 PH12NA018000AAAA?
Yes. This is the factory-specified OEM capacitor for the Carrier PH12NA018000AAAA. 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 PH12NA018000AAAA?
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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