York S1-025-32651-000 Auto Reset Limit Switch Overview
The York S1-025-32651-000 is a genuine OEM auto reset limit switch engineered to protect York heating systems from dangerous overheating conditions. Designed as a direct replacement component, this limit switch continuously monitors heat exchanger temperatures and automatically interrupts the burner circuit when temperatures exceed the rated threshold — then resets itself once safe operating temperatures are restored.
Key Features
- Genuine York OEM replacement part — SKU S1-025-32651-000
- Auto reset operation — automatically restores function once temperature drops to safe levels
- Temperature rating: 220–250°F operating range
- Provides critical overheat protection for York furnaces and air handlers
- Direct OEM fit for compatible York equipment — no modifications required
- Helps prevent heat exchanger damage and potential safety hazards
How It Works
The limit switch is mounted on or near the heat exchanger and monitors supply air temperature. If the temperature rises beyond the rated limit — indicating a potential airflow restriction, blower failure, or other fault — the switch opens the circuit to shut down the burner. Once the unit cools to a safe temperature, the auto reset mechanism closes the circuit and normal operation resumes.
Application
- Compatible with select York furnaces and heating equipment
- Intended for use by qualified HVAC technicians
- Verify compatibility with your specific York model before installation
Why Choose Genuine York OEM Parts?
Using genuine York OEM components ensures proper fit, reliable performance, and maintains equipment warranty compliance. Aftermarket substitutes may not meet the precise temperature tolerances required for safe and efficient operation.








