the 58L70 is built from heavy-duty materials to prevent warping and degradation during intensive heating cycles

and bore size is mandatory if attempting to use it in other ventilation blower applications

For contractors managing hydronic heating systems

The "SV" designation indicates the inclusion of the EL1214-SV short sensing probe

For contractors performing multi-speed motor troubleshooting

Lennox 15B45 Motor 321142-301 the 58L70 is built fromThe Lennox 15B45 Motor is a high performance direct drive blower motor engineered for specific HVAC applications requiring a reliable 1 2 HP replacement motor. Operating at 220 240V, 1 Phase, this motor delivers 1350 RPM across four distinct speed taps, allowing for precise airflow calibration in various furnace and air handler configurations. Built with a 48 frame diameter, the Lennox replacement part 15B45 features a standard shaft diameter and