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OEM Carrier Single Run Capacitor 4/10 MFD 370V — PY1REA072074ACWA
Carrier

OEM Carrier Single Run Capacitor 4/10 MFD 370V — PY1REA072074ACWA

SKU: CARRIE-PY1REA072074ACWA-CAPACITOR-P291-0403 Brand: Carrier
✓ Guaranteed to fit PY1REA072074ACWA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Single Run Capacitor 4 MFD / 10 MFD 370V for Model PY1REA072074ACWA

This OEM Carrier (Totaline) single run capacitor is the factory-specified replacement for the Carrier PY1REA072074ACWA system, covering both the P291-0403 (4 MFD) and P291-1003 (10 MFD) variants. A run capacitor stores and releases the precise electrical charge needed to keep a single-phase motor spinning at full efficiency. When it degrades, you'll notice symptoms such as a humming motor that fails to start, intermittent short-cycling, unusually high energy consumption, or a motor that runs hot and trips on thermal overload. Note: P291-0403 is superseded by P291-0404, and P291-1003 is superseded by P291-1004 — all variants are covered under this listing.

  • Specs: P291-0403 — 4 MFD ±5% | 370V AC | Oval case | 50/60 Hz | P291-1003 — 10 MFD ±5% | 370V AC | Oval case | 50/60 Hz | Both rated -40°C to +70°C operating temperature
  • OEM vs Generic: These Totaline/Carrier OEM capacitors are factory-tested to 60,000 service hours and subjected to 100% electrical testing including capacitance and high-potential withstand checks. Generic alternatives often skip full electrical screening and carry looser ±10% MFD tolerances, accelerating motor wear over time.
  • Install difficulty: 2/5 — Always discharge the capacitor fully before handling any terminals. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (capacitance mode). Photograph all wiring connections before disconnecting. Match MFD and voltage ratings exactly to your unit's data plate — do not substitute a different MFD value.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for Carrier model PY1REA072074ACWA. Always verify the MFD rating and voltage on your unit's data plate before ordering — the 4 MFD (P291-0403/P291-0404) and 10 MFD (P291-1003/P291-1004) serve different motor circuits. Questions about fitment? Our HVAC parts team confirms compatibility before you buy — order with confidence and get it shipped today.

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 Single Run Capacitor 4/10 MFD 370V — PY1REA072074ACWA?
Yes. This is the factory-specified OEM capacitor for the Carrier OEM Carrier Single Run Capacitor 4/10 MFD 370V — PY1REA072074ACWA. 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 Single Run Capacitor 4/10 MFD 370V — PY1REA072074ACWA?
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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