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OEM Carrier Dual Run Capacitor 50+5 MFD 370V — HA1BJX048000ABAA
Carrier

OEM Carrier Dual Run Capacitor 50+5 MFD 370V — HA1BJX048000ABAA

SKU: CARRIE-HA1BJX048000ABAA-CAPACITOR-P291-5054RS Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Dual Run Capacitor for Model HA1BJX048000ABAA — Part P291-5054RS

This is the factory-specified OEM dual run capacitor for the Carrier HA1BJX048000ABAA 4-ton split-system air conditioner. The dual run capacitor serves a critical function: it stores and delivers the precise electrical charge needed to start and continuously run both the compressor and condenser fan motor on a shared component. When this capacitor degrades or fails, you may notice a humming condenser unit that won't start, a fan spinning sluggishly or not at all, compressor short-cycling, or a complete system shutdown on a hot day. Replacing it promptly with the correct OEM part protects the compressor — the most expensive component in the system.

  • Specs: OEM Part Number P291-5054RS | Dual run design (compressor + fan) | 370V rated | Round case | Factory-matched ±3% MFD tolerance for precision motor protection
  • OEM vs Generic: This is a genuine Carrier OEM capacitor built to exact factory tolerances. Aftermarket capacitors frequently run ±10% MFD variance, which accelerates compressor wear, shortens motor life, and can void equipment warranties. For a 4-ton system, OEM is always the right call.
  • Install Difficulty: 2/5 — Always discharge the capacitor terminals before handling (use an insulated resistor or discharge tool). Tools needed: 1/4" nut driver, needle-nose pliers, multimeter with capacitance mode. Photograph all wiring connections before disconnecting. Total job time typically 20–30 minutes.
  • Warranty & Shipping: Backed by a 1-year OEM factory warranty. In stock and ships same business day from our warehouse — get your system back online fast.

Compatibility: Designed and verified for the Carrier HA1BJX048000ABAA 4-ton split-system condenser. Always confirm the MFD rating and voltage printed on your existing capacitor's label or the unit data plate before ordering. Our parts specialists are available to verify fitment — reach out before you buy if you have any questions. Order today and your part ships today.

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 OEM Carrier Dual Run Capacitor 50+5 MFD 370V — HA1BJX048000ABAA?
Yes. This is the factory-specified OEM capacitor for the Carrier OEM Carrier Dual Run Capacitor 50+5 MFD 370V — HA1BJX048000ABAA. 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 OEM Carrier Dual Run Capacitor 50+5 MFD 370V — HA1BJX048000ABAA?
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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