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This is a genuine OEM X-13 ECM fan motor control (part number 1185844) for the ICP/Heil/Tempstar model WJA336000K000B1. The X-13 is a 1/2 HP electronically commutated (ECM) constant-torque blower motor that drives the indoor air handler or furnace blower. Its brushless DC design delivers quieter, more efficient operation than older PSC motors and holds steady airflow as duct static pressure changes. Common failure symptoms include the blower failing to start, intermittent operation, humming or buzzing, overheating, or the motor spinning up briefly then shutting down on internal protection. A failed ECM module typically leaves the blower dead while the control board still powers up normally.
| Spec | Value |
|---|---|
| OEM Part Number | 1185844 |
| Type | X-13 ECM Motor Control |
| Brand | ICP / Heil / Tempstar |
| Horsepower | 1/2 HP |
| Motor Technology | Constant-Torque ECM (brushless DC) |
| Application | Indoor blower / air handler |
| Fitment | OEM Replacement |
Designed as a direct OEM replacement for ICP, Heil, and Tempstar model WJA336000K000B1. Because ICP shares blower platforms across its family brands, this X-13 module also appears in many comparable Comfortmaker and Day & Night air handlers using the same blower assembly. Always confirm OEM part number 1185844 against your old unit before installing.
Ships same day on orders placed before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.