What MFD capacitor do I need for my Carrier AC?

The correct replacement for Carrier model PF1MNB030008AAAA 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 PF1MNB030008AAAA.

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 7.5 MFD 370V for PF1MNB030008AAAA

Name: OEM Carrier Single Run Capacitor 7.5 MFD 370V for PF1MNB030008AAAA
Brand: Carrier
SKU: CARRIE-PF1MNB030008AAAA-CAPACITOR-P291-0753
Price: 18.95 USD
Availability: InStock

SKU: CARRIE-PF1MNB030008AAAA-CAPACITOR-P291-0753 Brand: Carrier

✓ Guaranteed to fit PF1MNB030008AAAA — or your money back. Terms

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OEM Carrier Single Run Capacitor 7.5 MFD 370V for Model PF1MNB030008AAAA

This OEM single run capacitor (part number P291-0753) is the factory-specified replacement for the Carrier PF1MNB030008AAAA. The run capacitor provides the continuous electrical phase shift needed to keep the fan or blower motor running smoothly and efficiently. When it degrades or fails, you'll typically notice symptoms such as a humming motor that won't start, a fan blade spinning sluggishly, intermittent shutdowns, or a complete no-start condition — all of which can quickly escalate to compressor or motor burnout if left unaddressed.

Specs: 7.5 MFD (microfarad) | 370V rated (440V-compatible replacement accepted) | Oval case form factor | Factory-matched ±5% tolerance | Cross-references: HC91CA007, GE 27L566
OEM vs Generic: This OEM-sourced capacitor meets Carrier's exact factory tolerance specifications. Generic aftermarket units commonly operate at looser tolerances, which can cause premature motor wear, increased energy draw, and shortened equipment life.
Install difficulty: 1/5 — One of the simplest HVAC repairs. Always discharge the capacitor fully before touching terminals. Tools needed: flathead or nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Match MFD rating exactly; voltage rating must be equal to or greater than original.
Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Fits Carrier model PF1MNB030008AAAA. Always verify the MFD rating and voltage on your unit's data plate before ordering. Note that Carrier sources capacitors from third-party manufacturers — the label on the physical part will reflect the OEM supplier name, not Carrier. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — contact us 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

OEM Carrier Single Run Capacitor...

$18.95

Frequently Asked Questions

Does this Capacitor fit my Carrier PF1MNB030008AAAA?

Yes. This is the factory-specified OEM capacitor for the Carrier PF1MNB030008AAAA. 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 PF1MNB030008AAAA?

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 7.5 MFD 370V for PF1MNB030008AAAA

OEM Carrier Single Run Capacitor 7.5 MFD 370V for Model PF1MNB030008AAAA

Shipping Information

Return Policy

Frequently Asked Questions