This furnace high limit switch prevents equipment damage and potential safety hazards by maintaining strict air temperature control during the heating cycle

This part is verified for use with Crathco and Grindmaster models D112

using the correct OEM HVAC part is essential to prevent CO leaks and maintain system efficiency

including RB

dry air is non-negotiable

Resideo 272804A Assembly This furnace high limit switchThe Resideo 272804A is a critical field service accessory designed for precise temperature regulation and physical security of electric heating systems. This range stop and locking screws assembly allows technicians to set definitive minimum and maximum setpoint limits, preventing end user over adjustment that leads to energy waste or equipment strain. Engineered for Honeywell Home thermostats, including the T410, T498, T4398, and T4098 series, this