Furnace Inducer Motor Replacement for Drafty Homes

This replacement unit is specified for Nordyne M1MB-070A-BW, Nortek, and Intertherm furnaces, meaning the physical housing and mounting bracket must align with those specific chassis dimensions to prevent vibration during cold snaps.

Check the product photo to verify the shaft length and the four-screw mounting pattern, as a mismatch here causes the draft sensor to read unsafe exhaust flow and shut down the system.

The HC21ZE123A designation indicates a specific rotor and stator configuration that must match your existing unit to maintain the correct RPM for safe venting.

Inspect the listing image for the exact part number printed on the motor housing, because using a different HC21ZE variant will result in incorrect airflow and immediate lockout by the safety controls.

This A249 unit replaces Lennox 103618-01, 103618-03, and Fasco 702112686 models, so the electrical connector pinout must be identical to avoid wiring errors during installation.

Look at the photo to confirm the fan wheel diameter and the specific shape of the electrical plug, as a mismatched connector prevents the control board from verifying the motor is spinning.

Labeled as a kit for the HC21ZE117 and 318984-753, this assembly includes the necessary hardware to secure the motor to the furnace cabinet without modification.

Examine the image to ensure the included fan wheel and clips are visible, as missing components in a 'kit' listing often lead to improper mounting and subsequent draft sensor failures.

The Y4L241A58 part number is an OEM upgraded specification that must physically fit Broad-Ocean and Zhongshan furnace models to maintain proper exhaust pressure.

Verify in the photo that the motor shaft protrusion matches your old unit, as a longer or shorter shaft will misalign the fan wheel and disrupt the airflow required by the draft sensor.

These are four replacement clips for the AS31XH280 inducer motor wheel, designed to secure the fan blade to the shaft without slipping during high-speed operation.

Look closely at the photo to see the clip geometry, as the wrong curvature will not hold the wheel tight, causing wobble that the draft sensor interprets as unsafe exhaust flow.

This ClimaTek unit is sized to fit Rheem, Ruud, and Weather King furnaces using part numbers 70-101087-01 and 70-101087-81, ensuring the housing depth fits within the cabinet.

Check the listing image for the specific mounting tab positions, because a slight offset in the bracket holes will prevent the motor from seating correctly against the draft sensor port.

Designed for Carrier, Bryant, and Jakel systems with the J238-150-1571 and HC21ZE117 designations, this motor must match the existing electrical load to prevent tripping.

Inspect the photo to confirm the fan wheel is included and matches the diameter of your current unit, as a smaller wheel will not generate enough negative pressure to satisfy the draft sensor.