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OEM Carrier Single Run Capacitor P291-1503 for FB4ASB048000AEAA
Carrier

OEM Carrier Single Run Capacitor P291-1503 for FB4ASB048000AEAA

SKU: CARRIE-FB4ASB048000AEAA-CAPACITOR-P291-1503 Brand: Carrier

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Texas CMBL #19328542014
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OEM Carrier Single Run Capacitor P291-1503 for Model FB4ASB048000AEAA

This is the factory-specified OEM single run capacitor (part number P291-1503) for the Carrier FB4ASB048000AEAA air handler. The run capacitor maintains a continuous phase-shifted current to keep the blower motor running at peak efficiency after startup. When this capacitor degrades or fails, you'll notice symptoms such as a humming blower motor that won't spin, sluggish or intermittent blower operation, overheating of the motor, or the air handler shutting down shortly after startup. Left unaddressed, a failing run capacitor can cause permanent motor burnout — making this an inexpensive repair that prevents a much costlier one.

  • Specs: Single run capacitor | OEM part number P291-1503 | Factory-matched MFD and voltage rating | Round or oval case per OEM spec | ±3% tolerance for precise motor protection
  • OEM vs Generic: This is a genuine Carrier OEM part built to exact factory tolerances. Aftermarket capacitors often carry ±10% MFD variance, which stresses motor windings over time and can void equipment warranties. OEM ensures the longest service life for your blower motor.
  • Install Difficulty: 2/5 — A straightforward repair for a qualified technician or experienced DIYer. Always discharge the capacitor fully before handling terminals. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, and a multimeter to confirm capacitance before and after replacement. Photograph all wiring connections prior to removal.
  • Warranty & Shipping: Backed by a 1-year OEM factory warranty against defects. Orders placed before our daily cut-off ship same business day from our stocked warehouse — get your system back online fast.

Compatibility: Designed and tested specifically for the Carrier FB4ASB048000AEAA 4-ton residential air handler. Always verify the MFD rating and voltage printed on your existing capacitor against your unit's data plate before completing your order. Our HVAC parts specialists are available to confirm fitment — don't hesitate to reach out before you buy.

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

Frequently Asked Questions

Does this Capacitor fit my Carrier FB4ASB048000AEAA?
Yes. This is the factory-specified OEM capacitor for the Carrier FB4ASB048000AEAA. 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 FB4ASB048000AEAA?
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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