Reznor 121866 Thermal Switch Certified Precision: Engineered to Nordstrom's

Certified Precision: Engineered to Nordstrom's strict tolerances for G6 and G7 series gas furnaces

Ensure the furnace is draining correctly to prevent water from backing up into the switch housing

Compatible with HCFC

Evaporator Protection: Automatically shuts off the heater if temperatures reach levels that could damage the evaporator fins or surrounding components

38" WC differential atmospheric pressure monitoring in York residential and commercial furnaces

Reznor 121866 Thermal Switch Certified Precision: Engineered to Nordstrom'sFor veteran contractors servicing industrial heating equipment, the Reznor 121866 Thermal Switch is a critical OEM component designed for high precision fan control and limit protection. This F190 30F thermal thermostat is engineered to monitor internal cabinet temperatures, ensuring the blower activates only when the heat exchanger reaches an optimal 190F. By deactivating the blower once temperatures drop below 30F, this switch prevents the