547-505

This 7-inch adjustable fan and limit switch is an essential dual-purpose safety and operational component designed for forced-air heating systems. Engineered to monitor and regulate furnace temperatures, this control switch manages the blower fan's activation and provides a critical high-limit safety cutout to prevent the heat exchanger from overheating. The adjustable settings allow for precise customization of the fan's on/off cycle and the system's maximum temperature threshold, ensuring optimal airflow and protecting your HVAC equipment from thermal damage. It is a reliable solution for restoring efficient performance to residential and commercial furnaces where a probe-style thermal sensor is required.
Type: Furnace Fan and High Limit Control Switch
Size: 7-inch Probe
Dimensions: 7 in
Application: Used in forced-air furnaces and central heating systems to control blower fan timing and provide high-temperature safety protection.
Specifications: Fan adjustment range: 90°F to 120°F; High-limit adjustment range: 150°F to 250°F; Features a 7-inch insertion probe for accurate temperature sensing within the plenum.