What MFD capacitor do I need for my Goodman AC?

The correct replacement for Goodman model WFM18140S5DNCB — CAP250000370RPS 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 Goodman equipment which lists the model number WFM18140S5DNCB — CAP250000370RPS.

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 Goodman 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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Goodman

OEM Goodman 25 MFD 370V Run Capacitor for WFM18140S5DNCB — CAP250000370RPS

Name: OEM Goodman 25 MFD 370V Run Capacitor for WFM18140S5DNCB — CAP250000370RPS
Brand: Goodman
SKU: GOODMAN-14165
Price: 16.95 USD
Availability: InStock

SKU: GOODMAN-14165 Brand: Goodman

$16.95 $22.95

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The Goodman CAP250000370RPS is a genuine OEM 25 MFD, 370-volt run capacitor engineered for the WFM18140S5DNCB furnace and other compatible Goodman/Amana equipment. The run capacitor stores and releases energy to keep the blower or condenser motor spinning efficiently. A weak or bulging capacitor is one of the most common causes of a motor that hums but won't start, short-cycles, or draws excessive amperage — replacing it restores smooth, reliable operation.

Specifications

Capacitance: 25 MFD (microfarads)
Voltage rating: 370 VAC
Type: Round run capacitor
Tolerance: ±6%
Fits: Goodman WFM18140S5DNCB and compatible models
OEM Part Number: CAP250000370RPS

OEM vs. Generic

Our OEM capacitor is the exact factory-spec part with verified capacitance and UL-recognized construction for maximum lifespan. A generic equivalent matches the 25 MFD / 370V rating at a lower cost and works well for most repairs, though tolerances and warranty may vary. Both are direct drop-in replacements.

Install Difficulty

Easy (1 of 5). A 10–15 minute repair for most DIYers. Always cut power at the breaker and discharge the old capacitor with an insulated screwdriver before removal. Photograph the wiring, transfer leads to matching terminals, and secure with the mounting strap.

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 $75
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 Goodman 25 MFD 370V Run Capa...

$16.95

Frequently Asked Questions

Does this Capacitor fit my Goodman WFM18140S5DNCB — CAP250000370RPS?

Yes. This is the factory-specified OEM capacitor for the Goodman WFM18140S5DNCB — CAP250000370RPS. 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 Goodman WFM18140S5DNCB — CAP250000370RPS?

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 Goodman 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 Goodman 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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