Lennox 21L89 Limit Switch and LP gas-air mixtures when

and LP gas-air mixtures when used with compatible Maxitrol regulator bodies

While amperage may match

as a standard mechanical limit switch

With a 10HP motor rating and a compact 5" x 9" x 2-3/4" footprint

Lennox 21L89 Limit Switch and LP gas-air mixtures whenThe 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