The York 313675 (T-O-D 60T82, 21157) Fan Limit Switch is a factory OEM safety and control component designed to regulate blower fan operation based on temperature. With an open at 110F / close at 90F temperature range, it ensures the system fan runs only when the proper temperature is reached, preventing premature cycling and maintaining efficient heating performance. This durable limit switch is built to meet York?s strict reliability standards. Key Features: Genuine York OEM fan limit switch for precise temperature control. Factory-calibrated to open at 110F / close at 90F. Regulates blower operation to maintain consistent airflow. Protects the system from overheating and short cycling. Compact, easy-to-install design with reliable performance. Built with high-quality T-O-D 60T82 series components. Ideal for furnace and air handler applications. Specifications: Part Numbers: 313675 / 21157 / T-O-D 60T82 Type: Fan Limit / Temperature Switch Function: Opens at 110F, Closes at 90F Mounting: Snap disc Manufacturer: York (Johnson Controls) Material: High-temperature resistant metal housing Application: HVAC blower fan temperature control Compatible Models (short list): 4066A656 4066701 7700856 7665856 7670B856 7970A856 4066646 7632856 7995C659 7724656 7956856 7680B859 7956759/E 7654856 7663859 7656859 7956C756 7670856 7975A856 and more. Why Choose This Item: The York 313675 Fan Limit Switch provides accurate and dependable blower temperature control, improving both safety and system efficiency. As a genuine OEM part, it ensures perfect compatibility and performance, maintaining your York HVAC system?s original specifications for long-term, worry-free operation.