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OEM Carrier Dual Run Capacitor 40+5 MFD 440V — PY4GNAB24040NA
Carrier

OEM Carrier Dual Run Capacitor 40+5 MFD 440V — PY4GNAB24040NA

SKU: CARRIE-PY4GNAB24040NA-CAPACITOR-P291-4054RS Brand: Carrier
✓ Guaranteed to fit PY4GNAB24040NA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Dual Run Capacitor 40+5 MFD 440V for Model PY4GNAB24040NA

This is the genuine OEM Carrier dual run capacitor (part# P291-4054RS), factory-specified for the Carrier PY4GNAB24040NA split-system air conditioner. The dual run capacitor stores and releases electrical charge to start and sustain both the compressor and the condenser fan motor simultaneously. When this component begins to fail, you'll typically notice a loud humming with no motor movement, the system short-cycling within minutes of startup, a sluggish or non-starting condenser fan, or a complete no-cool situation. Replacing it promptly prevents compressor damage from repeated hard-start attempts.

  • Specs: 40+5 MFD (microfarad) | 440V rated | Round case | ±6% factory tolerance | 50/60 Hz | Castor oil protected | No PCB | Replaces HC98KA041 & P291-4053RS
  • OEM vs Generic: This is a genuine Carrier OEM capacitor built to exact factory tolerances. Generic aftermarket units often run ±10% MFD variance, which accelerates motor and compressor wear and can void equipment warranties. OEM is always the safer long-term investment.
  • Install Difficulty: 2/5 — Always discharge the capacitor fully before handling terminals. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (to verify capacitance before and after). Photograph all terminal wiring before disconnecting. This is a common DIY repair for experienced homeowners.
  • Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Confirmed fit for Carrier model PY4GNAB24040NA. Always verify the MFD rating and voltage printed on your original capacitor's label before ordering — never substitute a lower-rated capacitor. Questions about fitment? Our HVAC parts specialists verify compatibility 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 $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 OEM Carrier Dual Run Capacitor 40+5 MFD 440V — PY4GNAB24040NA?
Yes. This is the factory-specified OEM capacitor for the Carrier OEM Carrier Dual Run Capacitor 40+5 MFD 440V — PY4GNAB24040NA. 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 40+5 MFD 440V — PY4GNAB24040NA?
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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