Lennox 10J42 Hard Start Kit 321042-401 single-throw (SPST) switch operates as

single-throw (SPST) switch operates as a normally closed safety device

facilitating straightforward installation and system integration

this remote sensor dial is compatible with both steam heating and hot water applications

using this HVAC burner gasket ensures the gas burner assembly maintains its high-efficiency rating and meets factory airflow specifications

Lennox 10J42 Hard Start Kit 321042-401 single-throw (SPST) switch operates asThe Lennox 10J42 Hard Start Kit (identical to 10J4201) is a critical genuine OEM HVAC component designed to assist compressors struggling under high head pressure or low voltage conditions. This HVAC start capacitor and relay kit provides the necessary torque boost during the initial startup cycle, significantly reducing the duration of locked rotor amps (LRA) and heat buildup in the motor windings. For technicians servicing Lennox residential or