What MFD capacitor do I need for my Carrier AC?

The correct replacement for Carrier model PY1REA060074AAWB is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Carrier equipment which lists the model number PY1REA060074AAWB.

My AC hums but will not start. What part do I need?

An AC that hums but will not start is the classic symptom of a failed capacitor. The capacitor provides the electrical boost needed to start the compressor and fan motors. When it fails, you hear the hum of the motor trying to start but it cannot overcome inertia. Other symptoms include the fan spinning slowly, the AC cycling on and off rapidly, or a visibly swollen or leaking capacitor. Replacement cost: $15 to $80 for the part, DIY in 30 minutes.

Is this capacitor compatible with Bryant or Payne systems too?

Many Carrier parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

Carrier

OEM Carrier Single Run Capacitor 4 MFD 370V for PY1REA060074AAWB

Name: OEM Carrier Single Run Capacitor 4 MFD 370V for PY1REA060074AAWB
Brand: Carrier
SKU: CARRIE-PY1REA060074AAWB-CAPACITOR-P291-0403
Price: 18.95 USD
Availability: InStock

SKU: CARRIE-PY1REA060074AAWB-CAPACITOR-P291-0403 Brand: Carrier

✓ Guaranteed to fit PY1REA060074AAWB — or your money back. Terms

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OEM Carrier Single Run Capacitor 4 MFD 370V for Model PY1REA060074AAWB

This is the factory-specified OEM single run capacitor for the Carrier PY1REA060074AAWB packaged unit. The run capacitor provides a continuous phase-shifted current to keep the condenser fan motor or blower motor running at full torque and efficiency. When this capacitor fails, you'll typically notice the motor humming but failing to spin, intermittent shutdowns, reduced airflow, or the unit tripping on high-pressure lockout due to an overworked compressor. Left unaddressed, a weak or failed run capacitor can cause permanent motor winding damage.

Specs: 4 MFD (microfarad) | 370 VAC rated | Oval case | Single (non-dual) run capacitor | Carrier OEM part number P291-0403 | Cross-references: HC90AA004, HC91CA004, HC90AB004, 97F5704, C304L, 27L571
OEM vs Generic: This OEM-spec capacitor is manufactured to exact Carrier factory tolerances (±5% MFD). Generic aftermarket units often carry ±10% tolerance, which accelerates motor bearing wear over time and can shorten equipment service life.
Install Difficulty: 2/5 — Discharge the capacitor fully before handling any terminals. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (capacitance setting). Always photograph existing wiring connections before disconnecting. Turn off all power at disconnect box before beginning.
Warranty: 1-year OEM factory warranty against defects. Ships same business day from our stocked warehouse.

Compatibility: Direct OEM replacement for Carrier model PY1REA060074AAWB packaged units. Also cross-references Totaline P291-0403 and Genteq C304L / 27L571. Always verify the MFD rating and voltage on your unit's data plate or existing capacitor before ordering — voltage rating must be equal to or greater than the original. Our fitment team is available to confirm compatibility 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

OEM Carrier Single Run Capacitor...

$18.95

Frequently Asked Questions

Does this Capacitor fit my Carrier PY1REA060074AAWB?

Yes. This is the factory-specified OEM capacitor for the Carrier PY1REA060074AAWB. 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 PY1REA060074AAWB?

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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OEM Carrier Single Run Capacitor 4 MFD 370V for PY1REA060074AAWB

OEM Carrier Single Run Capacitor 4 MFD 370V for Model PY1REA060074AAWB

Shipping Information

Return Policy

Frequently Asked Questions