What MFD capacitor do I need for my Carrier AC?

The correct replacement for Carrier model PF1MNC018000AAAA 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 PF1MNC018000AAAA.

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.

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OEM Carrier Single Run Capacitor P291-0753 for PF1MNC018000AAAA

Name: OEM Carrier Single Run Capacitor P291-0753 for PF1MNC018000AAAA
Brand: Carrier
SKU: CARRIE-PF1MNC018000AAAA-CAPACITOR-P291-0753
Price: 19.00 USD
Availability: InStock

SKU: CARRIE-PF1MNC018000AAAA-CAPACITOR-P291-0753 Brand: Carrier

✓ Guaranteed to fit PF1MNC018000AAAA — or your money back. Terms

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OEM Carrier Single Run Capacitor P291-0753 for Model PF1MNC018000AAAA

This OEM single run capacitor (part number P291-0753) is the factory-specified replacement for the Carrier PF1MNC018000AAAA fan coil unit. The run capacitor maintains a continuous phase-shifted current to keep the blower motor running efficiently after startup. When this capacitor degrades or fails, you'll typically notice symptoms such as a humming motor that won't spin, intermittent blower operation, reduced airflow, or the system tripping on thermal overload as the motor struggles under excess current draw.

Specs: Single run capacitor | Factory-matched MFD rating | 370V/440V rated | Cylindrical case | Precision ±5% tolerance per OEM specification
OEM vs Generic: This is a genuine OEM Carrier part, manufactured to exact factory tolerances. Generic alternatives often carry a wider ±10% MFD variance, which can accelerate motor winding wear and void equipment warranties over time.
Install Difficulty: 2/5 — Always discharge the capacitor fully before handling any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, and a multimeter to verify discharge. Photograph all wiring connections before removal to ensure correct reinstallation.
Warranty: Backed by a 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier PF1MNC018000AAAA fan coil unit. Always verify the MFD rating and voltage printed on your existing capacitor's label or the unit's data plate before ordering to confirm an exact match. Not sure if this is the right part? Our HVAC parts specialists are available to verify fitment before you order — no guesswork required.

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...

$19.00

Frequently Asked Questions

Does this Capacitor fit my Carrier PF1MNC018000AAAA?

Yes. This is the factory-specified OEM capacitor for the Carrier PF1MNC018000AAAA. 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 PF1MNC018000AAAA?

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 P291-0753 for PF1MNC018000AAAA

OEM Carrier Single Run Capacitor P291-0753 for Model PF1MNC018000AAAA

Shipping Information

Return Policy

Frequently Asked Questions