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OEM Carrier Single Run Capacitor P291-1503 for FB4ASF048000AEAA
Carrier

OEM Carrier Single Run Capacitor P291-1503 for FB4ASF048000AEAA

SKU: CARRIE-FB4ASF048000AEAA-CAPACITOR-P291-1503 Brand: Carrier
✓ Guaranteed to fit FB4ASF048000AEAA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Single Run Capacitor P291-1503 for Model FB4ASF048000AEAA

This is the factory-specified OEM single run capacitor (part number P291-1503) for the Carrier FB4ASF048000AEAA air handler. The run capacitor maintains a continuous phase-shifted current to keep the blower motor running at peak efficiency after startup. When it degrades or fails, the blower motor struggles to start, draws excessive amperage, and may hum loudly before tripping the overload — or it may simply fail to run altogether, leaving your system circulating no conditioned air through the home.

  • Specs: Single run capacitor | Factory-matched MFD rating | 370V or 440V rated (verify against your unit's data plate) | Cylindrical case | ±5% OEM tolerance for precise motor protection
  • OEM vs Generic: This is a genuine Carrier OEM capacitor manufactured to exact factory specifications. Generic replacements commonly carry ±10% MFD tolerance, which accelerates blower motor winding wear and can void equipment warranties. OEM is always the recommended choice for air handler blower applications.
  • Install Difficulty: 2/5 — A straightforward repair for a qualified technician or experienced DIYer. Required tools: 1/4" nut driver, insulated needle-nose pliers, and a multimeter capable of measuring capacitance. Critical safety step: Always discharge the capacitor fully before touching any terminals — capacitors store lethal voltage even after power is disconnected. Photograph all wiring connections before removal.
  • Warranty & Shipping: Backed by a 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed and tested for the Carrier FB4ASF048000AEAA 4-ton air handler. Always confirm the MFD and voltage rating printed on your existing capacitor or the unit's data plate before ordering to ensure a correct match. Have questions about fitment? Our HVAC parts specialists verify compatibility before you purchase — no guesswork required.

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 FB4ASF048000AEAA?
Yes. This is the factory-specified OEM capacitor for the Carrier FB4ASF048000AEAA. 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 FB4ASF048000AEAA?
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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