Lennox 48G63 Supply Air Sensor Built to withstand the thermal

Built to withstand the thermal stress of high-cycle heating and cooling environments

A 'Close on Rise' switch is typically used for fan control to start a blower once the heat exchanger warms up

and interlocking safety circuits

HVAC contractors rely on this 370F rollout switch to prevent cabinet damage and fire hazards in mid-to-high efficiency furnaces

Lennox 48G63 Supply Air Sensor Built to withstand the thermalThe Lennox 48G63 Supply Air Sensor is a critical diagnostic component engineered for high precision temperature monitoring within residential and commercial air handlers and heat pump systems. Designed to interface directly with Lennox iComfort communication systems, this NTC thermistor based sensor provides real time feedback to the integrated control board, ensuring the HVAC system maintains precise discharge air temperatures. By utilizing patented