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OEM Carrier Single Run Capacitor 4 MFD 370V for PY1REA048115AAWB
Carrier

OEM Carrier Single Run Capacitor 4 MFD 370V for PY1REA048115AAWB

SKU: CARRIE-PY1REA048115AAWB-CAPACITOR-P291-0403 Brand: Carrier
✓ Guaranteed to fit PY1REA048115AAWB — 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 PY1REA048115AAWB

This OEM Carrier/Totaline single run capacitor is the factory-specified replacement for the Carrier PY1REA048115AAWB packaged unit. The run capacitor remains in the circuit continuously while the fan motor operates, providing the phase-shifted current needed to keep the motor running efficiently. When this capacitor weakens or fails, you'll typically experience a fan motor that hums but won't spin, intermittent fan operation, or a unit that trips on high-pressure lockout due to insufficient airflow across the coil.

  • Specs: 4 MFD (microfarad) | 370 VAC rated | Oval case | Part Numbers: P291-0403 (primary), P291-1503 (companion single run capacitor) | Replaces OEM P/N 97F5704, HC90AA004, HC91CA004, HC90AB004
  • OEM vs Generic: This is a genuine Carrier/Totaline OEM capacitor manufactured to ±5% MFD tolerance and subjected to 100% electrical testing before packaging. Generic alternatives often carry ±10% tolerance, which accelerates motor winding stress and shortens component life.
  • Install difficulty: 1/5 — One of the easiest HVAC repairs. Shut off power at the disconnect and allow 5 minutes for the capacitor to self-discharge before touching terminals. Tools needed: flathead screwdriver, needle-nose pliers, optional multimeter. Always photograph existing wiring before disconnecting terminals.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM drop-in replacement for Carrier model PY1REA048115AAWB. Always verify the MFD rating and voltage on your unit's data plate before ordering — never substitute a lower voltage-rated capacitor. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you order. Order today and get same-day shipping!

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 PY1REA048115AAWB?
Yes. This is the factory-specified OEM capacitor for the Carrier PY1REA048115AAWB. 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 PY1REA048115AAWB?
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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