Source1 2535380000 Furnace Limit Switch Thermostat Auto Reset Opens 140F Closes 110F

Product Description

The SOURCE1 2535380000 is a furnace limit switch and thermostat designed to protect heating systems from overheating and unsafe operating conditions. This auto-reset safety control monitors temperature inside the furnace and cuts power to the burner or blower when temperatures rise to dangerous levels. It opens at 140 degrees Fahrenheit and automatically closes again at 110 degrees Fahrenheit, restoring normal operation once the system cools down. HVAC technicians rely on limit switches like this one as a first line of defense against heat exchanger damage, nuisance shutdowns, and fire hazards caused by restricted airflow or blower failure. The auto-reset feature means the switch returns to its closed position on its own without requiring a manual reset after each trip, reducing service calls and downtime. This part is a genuine OEM replacement component, ensuring a proper fit and reliable performance compared to aftermarket alternatives. It is compatible with popular York furnace models including 7956C856, 7956A856, and 7956-759/D units among others. HVAC service technicians and heating contractors working on York and compatible gas furnaces will find this limit switch a direct drop-in replacement for worn or failed original equipment. Proper limit switch function is critical for maintaining safe furnace operation, protecting the heat exchanger, and keeping the system within rated temperature thresholds. This component meets the original equipment specifications and delivers the dependable protection that trade professionals expect from a genuine OEM part. Whether you are troubleshooting a furnace that keeps shutting off or performing a preventive maintenance replacement, the SOURCE1 2535380000 is a reliable, code-compliant solution built to restore safe furnace operation quickly.

• Opens at 140 degrees Fahrenheit to shut down furnace during overtemperature conditions
• Closes automatically at 110 degrees Fahrenheit with built-in auto-reset function
• Genuine OEM replacement compatible with York 7956C856, 7956A856, and 7956-759/D furnace models

Product Highlights

The SOURCE1 2535380000 furnace limit switch provides reliable overtemperature protection with auto-reset functionality, making it a trusted OEM replacement for York and compatible furnace applications. Its precise trip and reset temperatures help safeguard heat exchangers and keep HVAC systems operating safely.

Product Information

Standard Information

• Brand: SOURCE1
• Manufacturer Part Number: 2535380000

Technical Specifications

• Product Type: Limit Switch / Thermostat
• Opens Temperature: 140 degrees Fahrenheit
• Closes Temperature: 110 degrees Fahrenheit
• Reset Type: Auto Reset
• Equipment Type: Furnace
• Length: 18.65 inches
• Width: 6.05 inches
• Height: 1.35 inches
• Weight: 0.07 pounds