What HP motor do I need for my Goodman unit?

The correct replacement for Goodman model GMPH120-5 — B13400251S 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 GMPH120-5 — B13400251S.

My AC fan is not spinning. What part do I need?

A fan that does not spin, spins slowly, or makes grinding or squealing noises needs a new motor. Grinding means the bearings have failed. Squealing means the bearings are dry. No spin with a humming sound means the capacitor may be the issue. Check the motor capacitor before replacing the entire motor.

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Goodman

OEM Goodman 1/6 HP Condenser Fan Motor for GMPH120-5 — B13400251S

Name: OEM Goodman 1/6 HP Condenser Fan Motor for GMPH120-5 — B13400251S
Brand: Goodman
SKU: GOODMAN-12048
Price: 185.95 USD
Availability: InStock

SKU: GOODMAN-12048 Brand: Goodman

$185.95 $239.95

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Goodman B13400251S 1/6 HP Condenser Fan Motor

The Goodman B13400251S is a genuine OEM 1/6 HP condenser fan motor engineered as a direct-fit replacement for the GMPH120-5 unit. This motor drives the outdoor condenser fan blade to move air across the coil for heat rejection. When a condenser motor fails — humming without spinning, running hot, or seizing — the system loses its ability to reject heat, tripping on high pressure and risking compressor damage. This OEM motor restores reliable, quiet outdoor airflow.

Specifications

OEM Part Number: B13400251S
Horsepower: 1/6 HP
Part Type: Condenser Fan Motor
Brand: Goodman (Genuine OEM)
Fits Model: GMPH120-5
Features: Sealed ball/sleeve bearings, matched shaft diameter and mounting pattern

OEM vs. Generic

The genuine Goodman motor matches the factory RPM, rotation, shaft size, mounting studs, and electrical connections, so it drops in and pairs correctly with the existing run capacitor. Universal replacement motors often require remounting brackets, rewiring, and selecting a separate capacitor — increasing labor and the chance of mismatch. OEM is the fastest, most dependable repair.

Installation Difficulty

Moderate to Advanced — Disconnect power and discharge the capacitor before starting. Remove the fan grille and blade, unbolt the old motor, transfer the blade, and match the wiring (line, capacitor, and ground) exactly. Verify capacitor microfarad rating and rotation on startup. Best handled by an experienced DIYer or HVAC technician; allow about 1 hour.

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 1/6 HP Condenser Fan...

$185.95

Frequently Asked Questions

Does this Condenser Fan Motor fit my Goodman GMPH120-5 — B13400251S?

Yes. This is the factory-specified OEM condenser fan motor for the Goodman GMPH120-5 — B13400251S. 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 condenser fan motor on my Goodman GMPH120-5 — B13400251S?

Difficulty: Medium-Hard (1–2 hrs)
Step 1: Turn off breaker. Step 2: Note motor specs: HP, RPM, voltage, rotation direction. Step 3: Remove old motor from mounting. Step 4: Transfer fan blade to new motor. Step 5: Mount new motor, reconnect wiring. Step 6: Restore power, verify rotation direction.

My AC fan isn’t spinning. What part do I need?

Fan not spinning, spinning slowly, or making grinding/squealing noises = motor failure. Grinding = bearings failed. Squealing = bearings dry. No spin + hum = check the motor capacitor first before replacing the entire motor.

Is this condenser fan motor 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 condenser fan motor?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

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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