Copeland Comfort Control (White Rodgers) 3F11-180 Fan Switch

The Copeland Comfort Control (White Rodgers) 3F11-180 Fan Switch is a professional-grade snap disc fan control engineered for precision thermal regulation in forced-air systems. This 1/2" bimetal disc sensor features a fixed 172°F cut-in temperature and a 30°F differential, ensuring the fan engages at 172°F and disengages once the temperature drops to 142°F. Operating with an SPST switch action that closes on rise, this auto reset control provides consistent circuit termination without manual intervention. Designed for seamless integration, it serves as a direct drop-in for Therm-O-Disc 36T22-10856 and similar HVAC limit switches. With its 1/4" quick-connect terminals and standard mounting profile, this bimetal thermostat is ideal for maintaining optimal airflow and preventing heat exchanger overheating in residential and commercial heating units.

• Direct Replacement: Compatible with Therm-O-Disc 36T22-10856, simplifying field repairs.
• Fixed Temperature Precision: Factory-set 172°F cut-in ensures the blower activates only when the plenum reaches the safe operating threshold.
• Robust Construction: The 1/2" bimetal disc design provides fast thermal response and long-term cycling reliability.
• Simplified Wiring: Features standard 1/4" quick-connect terminals for rapid installation in the field.
• Automatic Reset: Eliminates service calls for manual resetting after standard thermal cycles.

Is the 3F11-180 compatible with furnace blower motors?
Yes, this switch is specifically designed to cycle furnace fans or blowers based on the air temperature rise within the heat exchanger or plenum.

What does 'Close on Rise' mean for this switch?
This signifies that the electrical contacts close (completing the circuit to start the fan) when the sensed temperature rises to the set 172°F point.

Can I use this as a high-limit safety control?
While typically used for fan control, it is essential to match the specific temperature ratings and switch actions (Open vs. Close on rise) required by the OEM manufacturer for safety limit applications.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.