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OEM Carrier Dual Run Capacitor 45+5 MFD 440V — PY4GNAB36090NA
Carrier

OEM Carrier Dual Run Capacitor 45+5 MFD 440V — PY4GNAB36090NA

SKU: CARRIE-PY4GNAB36090NA-CAPACITOR-P291-4554RS Brand: Carrier
✓ Guaranteed to fit PY4GNAB36090NA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Dual Run Capacitor 45+5 MFD 440V for Model PY4GNAB36090NA

This is the genuine OEM factory-specified dual run capacitor (part number P291-4554RS) for the Carrier PY4GNAB36090NA packaged unit. The dual run capacitor simultaneously powers both the compressor (HERM) and the condenser fan motor (FAN) from a single round can. When this capacitor weakens or fails, you'll typically experience symptoms such as a loud humming noise with no motor start, the system tripping on thermal overload shortly after startup, or the condenser fan spinning slowly or not at all — all signs of a capacitor that can no longer hold its rated charge.

  • Specs: 45+5 MFD (microfarad) | 440V rated | Round case | ±6% tolerance | 50/60 Hz | AFC 10,000 | Castor oil protected | No-PCB construction | Height: 3-15/16" (4-1/2" with terminals) | Diameter: 2-7/16"
  • OEM vs Generic: This is a genuine Carrier OEM part meeting exact factory tolerances. Generic aftermarket capacitors commonly run ±10% MFD variance, which accelerates compressor and fan motor wear and can void equipment warranties. Note: Carrier sources capacitors from partner manufacturers — the label on the capacitor will reflect the component manufacturer's name, not Carrier's.
  • Install difficulty: 2/5 — Always discharge the capacitor fully before touching terminals. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (to verify capacitance before and after). Photograph all wiring connections before disconnecting. Match HERM, FAN, and COMMON terminals exactly to original wiring.
  • Warranty: 1-year OEM manufacturer warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY4GNAB36090NA packaged unit. Also replaces legacy Carrier part numbers HC98KA046 and 319186-702. Verify MFD rating, voltage, and terminal configuration against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — don't guess on a capacitor replacement.

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 45+5 MFD 440V — PY4GNAB36090NA?
Yes. This is the factory-specified OEM capacitor for the Carrier OEM Carrier Dual Run Capacitor 45+5 MFD 440V — PY4GNAB36090NA. 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 45+5 MFD 440V — PY4GNAB36090NA?
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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