Lennox 21J29 Start Capacitor 323055-751 provided the ductwork static pressure

provided the ductwork static pressure remains within manufacturer specifications

Common Questions What are the technical dimensions of this fan blade

or counter-clockwise if the system is oscillating (short-cycling) around the setpoint

System Reliability: Replaces worn or cracked plastic transitions to restore original airflow dynamics and protect sensitive electrical components from leak exposure

the ZTH enables direct connection to communicative HVAC components

Lennox 21J29 Start Capacitor 323055-751 provided the ductwork static pressureThe Lennox 21J29 Start Capacitor is a heavy duty 270 324 MFD 330V round electrolytic component engineered to provide the high torque boost required during the initial compressor startup phase. This genuine OEM Lennox part, which is functionally identical to the 21J2901, is critical for single phase HVAC systems that utilize a non bleed TXV or encounter high static pressure. By delivering a precise voltage surge to the start winding, this capacitor