What HP motor do I need for my Goodman unit?

The correct replacement for Goodman model WAHMS1824P4ACA — 1439389S 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 WAHMS1824P4ACA — 1439389S.

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.

Is this blower housing 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 9x6 in. Blower Housing for WAHMS1824P4ACA — 1439389S

Name: OEM Goodman 9x6 in. Blower Housing for WAHMS1824P4ACA — 1439389S
Brand: Goodman
SKU: 1439389S-GEN
Price: 53.95 USD
Availability: InStock

SKU: 1439389S-GEN Brand: Goodman

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The genuine Goodman 1439389S 9 x 6 in. Blower Housing is the factory scroll housing for the WAHMS1824P4ACA wall-mount air handler. The housing encloses the blower wheel and shapes airflow through the indoor coil, so a correctly fitted housing is essential for rated CFM, static pressure, and quiet operation.

Specifications

OEM part number: 1439389S
Housing size: 9 in. x 6 in. scroll
Fits: Goodman/Amana WAHMS1824P4ACA air handler
Equipment type: Wall-mount air handler
Function: Blower wheel scroll / airflow housing

OEM vs. Generic

The OEM housing matches the original mounting points, cutoff geometry, and wheel clearance, preserving designed airflow and minimizing noise and vibration. Aftermarket housings rarely match these tolerances exactly and can cause buzzing, reduced airflow, or wheel rub. For airflow-critical components we recommend OEM.

Install difficulty

Moderate — requires removing the blower assembly and transferring the wheel and motor. Plan 45–90 minutes and verify wheel-to-cutoff clearance before powering on.

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 9x6 in. Blower Housi...

$53.95

Frequently Asked Questions

Does this Blower Housing fit my Goodman WAHMS1824P4ACA — 1439389S?

Yes. This is the factory-specified OEM blower housing for the Goodman WAHMS1824P4ACA — 1439389S. 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 blower housing on my Goodman WAHMS1824P4ACA — 1439389S?

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 blower housing 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 blower housing?

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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