Lennox 21J29 Start Capacitor 323055-751 this model is the updated

this model is the updated professional-grade equivalent and serves as a drop-in replacement for 0256651 and several older 140S series configurations

ensuring your 2-way solenoid valve maintains its Maximum Operating Pressure Differential (MOPD) and bubble-tight shutoff integrity

managing ignition sequences and maintaining consistent heat output via internal pressure regulation mechanisms

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

Technicians should perform a temperature differential test across the suction and discharge lines

Lennox 21J29 Start Capacitor 323055-751 this model is the updatedThe 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