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OEM Carrier Single Run Capacitor 4 MFD 370V for PY3PEA048090AA
Carrier

OEM Carrier Single Run Capacitor 4 MFD 370V for PY3PEA048090AA

SKU: CARRIE-PY3PEA048090AA-CAPACITOR-P291-0403 Brand: Carrier
✓ Guaranteed to fit PY3PEA048090AA — or your money back. Terms

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OEM Carrier Single Run Capacitor 4 MFD 370V for Model PY3PEA048090AA

This OEM Carrier single run capacitor (P291-0403) is the factory-specified replacement for the Carrier PY3PEA048090AA 4-ton packaged gas/electric unit. The run capacitor maintains the continuous phase shift needed to keep the PSC condenser fan motor or blower motor spinning at rated torque and efficiency. When this capacitor fails or drifts out of tolerance, the most common symptoms are a humming motor that won't start, sluggish motor ramp-up, intermittent shutdowns on thermal overload, or unexplained high head pressure caused by a slow or stalled condenser fan. Left unaddressed, a weak capacitor accelerates motor winding wear and can lead to compressor overheating in a packaged unit like the PY3PEA048090AA.

  • Specs: 4 MFD (microfarad) | 370 VAC rated | Oval case form factor | ±5% capacitance tolerance | 50/60 Hz | UL Approved with patented pressure-sensitive interrupter
  • OEM vs Generic: This is a genuine Carrier/Totaline OEM capacitor manufactured to exact factory tolerances. Generic capacitors commonly ship at ±10% MFD variance, which shortens motor life and can void motor warranties. OEM units are subjected to 100% electrical testing before leaving the factory.
  • Install difficulty: 2/5 — Always discharge the capacitor before handling (use a 20,000 Ω resistor or insulated screwdriver across terminals). Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (capacitance mode). Photograph all wiring connections before disconnecting. Verify MFD and voltage ratings match your unit's data plate before installation.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our NationalHVACParts.com warehouse.

Compatibility: Designed for Carrier model PY3PEA048090AA 4-ton, 90,000 BTU packaged gas/electric unit. Also cross-references OEM part numbers P291-0403 (primary) and may be used alongside companion capacitor P291-1503 (15 MFD 370V) for the fan motor circuit — verify your unit's wiring diagram to confirm which circuit each capacitor serves. Cross-references include HC90AA004, HC91CA004, HC90AB004, GE/Genteq C304L, and 27L571. Questions? Our technical team confirms fitment before you order.

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 PY3PEA048090AA?
Yes. This is the factory-specified OEM capacitor for the Carrier PY3PEA048090AA. 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 PY3PEA048090AA?
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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