ICP ECM X-13 1/2 HP Motor Control for WAHM424B1 — OEM 1185291 | Ships Today
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Overview
This ICP OEM ECM X-13 motor control (part number 1185291) is the 1/2 HP electronically commutated blower motor module used in the WAHM424B1 air handler. The X-13 is a constant-torque ECM that delivers quiet, energy-efficient airflow and holds steady CFM against changing static pressure — far more efficient than a legacy PSC motor. The integrated control accepts low-voltage tap selections to set blower speed for each operating mode. When this motor or its control fails you may notice no airflow, weak airflow, a blower that hums but won't spin, overheating, or repeated thermal cutouts. Replacing it with the correct factory ECM restores proper airflow and efficiency.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1185291 |
| Type | ECM X-13 Constant-Torque Motor Control |
| Brand | ICP (Tempstar / Heil) |
| Horsepower | 1/2 HP |
| Application | Air Handler / Furnace Blower |
| Fit | OEM |
| Designed For | WAHM424B1 |
Compatibility
Factory replacement ECM X-13 motor control for the ICP/Tempstar/Heil WAHM424B1 air handler and related WAHM-series units originally equipped with part 1185291. Verify the part number and HP rating on your existing motor before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter; allow the ECM capacitors to discharge before handling.
- Access — Remove the blower compartment service panel and slide out the blower assembly if required.
- Document — Photograph the line-voltage harness, the low-voltage speed-tap connections, and the blower wheel set-screw position.
- Remove — Disconnect the harnesses, loosen the blower wheel set screw, pull the wheel, and unbolt the old motor from the housing.
- Install — Mount the new 1185291 motor, reinstall the blower wheel at the documented depth, and reconnect the line-voltage and speed-tap leads per your photos.
- Test — Restore power, run each blower mode, and confirm smooth start-up, correct speed, and steady airflow.
Signs You Need a Replacement
- No airflow or noticeably weak airflow from the air handler.
- Motor hums or buzzes but the blower wheel won't turn.
- Blower starts then shuts off on thermal overload, or cycles erratically.
- Loud bearing noise, hot motor housing, or a burnt-electronics smell.
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.
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