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OEM Carrier Run Capacitor Replacement for Model FA4CNF018008AAAA

SKU: carrier-run-capacitor-fa4cnf018008aaaa Brand: Carrier
$29.95

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 Replacement for Model FA4CNF018008AAAA

This genuine OEM Carrier run capacitor delivers the consistent electrical phase shift your FA4CNF018008AAAA blower motor relies on to start smoothly and run efficiently. A worn or failed run capacitor commonly causes a humming motor that won't spin, reduced airflow, overheating, or a blower that trips on overload. Built to the precise microfarad (MFD) and voltage rating Carrier specifies for the FA4CNF018008AAAA, this capacitor is a direct replacement with matching terminals and mounting bracket. Installation is straightforward for a technician and typically takes about 15 minutes: turn off power, safely discharge the old capacitor, note the terminal wiring, and install the new unit. Since capacitors naturally weaken with age, fitting a true OEM part restores full motor torque and helps protect the blower motor from early failure. We stock this run capacitor and ship same-day on all orders placed before 3PM CST. Choose authentic Carrier quality for dependable motor starting and efficient, long-lasting blower performance.

Compatibility

This part is compatible with Carrier model FA4CNF018008AAAA.

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 Model FA4CNF018008AAAA?
Yes. This is the factory-specified OEM run capacitor for the Carrier Model FA4CNF018008AAAA. 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 Model FA4CNF018008AAAA?
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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