Lennox 21L89 Limit Switch Once power is restored

Once power is restored

leading to sluggish regulator response

it allows for immediate visual verification of thermostat settings without the need to remove the housing

The unit is built with a 24VAC coil and is rated for 30 amps inductive or 40 amps resistive loads

Is this part compatible with my specific KBN or AWN model

Lennox 21L89 Limit Switch Once power is restoredThe Lennox 21L89 Limit Switch is a critical safety component designed for precise thermal regulation in Lennox HVAC systems. This auto limit switch features a 3 inch insert and is engineered to open the electrical circuit if the heat exchanger temperatures reach the 210F to 240F range. As a direct OEM replacement part, the 21L89 is identical to the 21L8901, ensuring a drop in fit for contractors maintaining residential furnaces and air handlers. This