Lennox 87F16 Limit Control 321042-401 always verify the specific model

always verify the specific model nomenclature (HFESC vs HFES) if a removable screen is required for your application

While both are float-type controls

Ensure your system's operating temperature does not exceed the 248°F limit for the bronze body and brass trim components

Designed with a 110-120Vac 50/60Hz coil

returning the equipment to service faster

Lennox 87F16 Limit Control 321042-401 always verify the specific modelThe Lennox 87F16 Limit Control is a critical safety component designed for precise thermal management in residential and commercial heating systems. This 140F limit switch acts as a primary stilt mounted high limit safety, engineered to interrupt the electrical circuit if internal plenum temperatures exceed the 140 degree Fahrenheit threshold. By preventing the heat exchanger from reaching unsafe temperatures due to restricted airflow or blower