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OEM Carrier Single Run Capacitor P291-0504 for FD3ANA018005AAAA
Carrier

OEM Carrier Single Run Capacitor P291-0504 for FD3ANA018005AAAA

SKU: CARRIE-FD3ANA018005AAAA-CAPACITOR-P291-0504 Brand: Carrier
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Texas CMBL #19328542014
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OEM Carrier Single Run Capacitor P291-0504 for Model FD3ANA018005AAAA

This is the factory-specified OEM single run capacitor (part number P291-0504) for the Carrier FD3ANA018005AAAA fan coil unit. A single run capacitor is dedicated to one motor — typically the blower or condenser fan motor — providing the sustained electrical charge needed to keep it running at full efficiency. When this capacitor degrades or fails, common symptoms include a humming motor that won't start, intermittent shutdowns, reduced airflow, or a complete failure of the fan motor to spin. Left unaddressed, a failing capacitor places excessive strain on the motor windings and can lead to costly motor replacement.

  • Specs: OEM single run capacitor | Part No. P291-0504 | Factory-matched MFD and voltage rating | Round or oval case per OEM specification | ±5% tolerance as factory-specified
  • OEM vs Generic: This is a genuine OEM Carrier capacitor manufactured to exact factory tolerances. Aftermarket alternatives often carry ±10% MFD variance, which accelerates motor wear, reduces efficiency, and can void equipment warranties. For a unit like the FD3ANA018005AAAA, OEM is always the safest choice.
  • Install Difficulty: 2/5 — Always discharge the capacitor fully before handling. Recommended tools: 1/4" nut driver, insulated needle-nose pliers, and a multimeter capable of reading capacitance. Photograph all wiring connections prior to removal. Observe polarity markings if applicable.
  • Warranty: Backed by a 1-year OEM factory warranty. Orders placed before the daily cutoff ship same business day from our warehouse.

Compatibility: Designed and verified for Carrier model FD3ANA018005AAAA. Always confirm MFD rating and voltage against the data plate on your unit before ordering. If you need help verifying fitment, our parts specialists are available to confirm compatibility before you purchase. In stock and ready to ship today — get your system back up and running 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 FD3ANA018005AAAA?
Yes. This is the factory-specified OEM capacitor for the Carrier FD3ANA018005AAAA. 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 FD3ANA018005AAAA?
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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Mike Rivera
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