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OEM Carrier Single Run Capacitor 4 MFD 370V for PY2PEB042090NB
Carrier

OEM Carrier Single Run Capacitor 4 MFD 370V for PY2PEB042090NB

SKU: CARRIE-PY2PEB042090NB-CAPACITOR-P291-0403 Brand: Carrier
✓ Guaranteed to fit PY2PEB042090NB — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Single Run Capacitor 4 MFD 370V for Model PY2PEB042090NB

This OEM single run capacitor is the factory-specified replacement for the Carrier PY2PEB042090NB packaged unit. The run capacitor sustains the continuous electrical phase shift required to keep the condenser fan motor or blower motor spinning during operation. When it degrades or fails, you'll typically experience a humming motor that won't start, intermittent shutdowns, or a completely non-responsive motor — all classic signs of capacitor failure.

  • Specs: 4 MFD (microfarad) | 370 VAC rated | Oval case | 50/60 Hz | Factory-matched ±5% tolerance | Replaces OEM part numbers P291-0403 and P291-1503
  • OEM vs Generic: This is a genuine Carrier/Totaline-sourced capacitor tested to factory standards. Generic units often run wider MFD tolerances, which accelerates motor wear and can shorten compressor or fan motor life significantly.
  • Install difficulty: 2/5 — Always discharge the capacitor fully before handling. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (for verification). Photograph all wiring connections before disconnecting the old unit.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our stocked warehouse.

Compatibility: Designed for the Carrier PY2PEB042090NB packaged unit. Always verify the MFD rating and voltage on your unit's data plate before ordering — never substitute a lower voltage rating. Note: P291-1503 (15 MFD, 370V) has been discontinued by Carrier; the current OEM replacement is P291-1504 (15 MFD, 440V). Contact our team for fitment verification before ordering.

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 PY2PEB042090NB?
Yes. This is the factory-specified OEM capacitor for the Carrier PY2PEB042090NB. 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 PY2PEB042090NB?
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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