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OEM Carrier Single Run Capacitor 4 MFD 370V for PY3PPA030040NA
Carrier

OEM Carrier Single Run Capacitor 4 MFD 370V for PY3PPA030040NA

SKU: CARRIE-PY3PPA030040NA-CAPACITOR-P291-0403 Brand: Carrier
✓ Guaranteed to fit PY3PPA030040NA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Single Run Capacitor 4 MFD 370V for Model PY3PPA030040NA

This is the factory OEM single run capacitor specified for the Carrier PY3PPA030040NA packaged unit. The run capacitor stays energized throughout the entire operating cycle, storing and releasing the electrical charge that keeps the condenser fan motor or blower motor running efficiently. When this capacitor weakens or fails, you'll typically notice the fan struggling to start, a low humming with no motor movement, the system blowing warm air, or short-cycling due to thermal overload on a motor that can no longer run properly. Replacing it promptly prevents expensive downstream motor damage.

  • Specs: 4 MFD (microfarad) | 370 VAC rated | Oval case form factor | ±5% factory tolerance | 50/60 Hz | OEM Part Numbers: P291-0403 / P291-1503
  • OEM vs Generic: This OEM Carrier/Totaline-branded capacitor is subjected to 100% electrical testing at the factory and uses high-grade metallized polypropylene film for proven reliability. Generic capacitors frequently run at ±10% MFD tolerance, which accelerates motor winding wear and shortens equipment life.
  • Install difficulty: 2/5 — Always shut off power at the disconnect and allow several minutes for the capacitor to self-discharge before handling. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify discharge and confirm capacitance). Photograph all terminal wiring before disconnecting. Terminals are clearly labeled for straightforward reinstallation.
  • Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as the direct OEM replacement for Carrier model PY3PPA030040NA packaged units. Cross-references: replaces OEM part numbers P291-0403 and P291-1503, as well as legacy GE/Genteq C304L, 27L571, and 97F5704. Always verify the MFD rating and voltage on your unit's data plate before ordering. Our team is available to confirm fitment — just 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 $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 PY3PPA030040NA?
Yes. This is the factory-specified OEM capacitor for the Carrier PY3PPA030040NA. 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 PY3PPA030040NA?
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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