The York S1-025-26366-001 is an OEM-grade automatic reset limit switch engineered to protect York heating systems from dangerous overtemperature conditions. Designed as a direct replacement for compatible York furnaces and air handlers, this limit switch continuously monitors heat exchanger temperatures and interrupts the burner circuit when temperatures exceed the safe operating threshold — then automatically resets once the system returns to a safe temperature range.
Key Features
- Operating temperature range: 105°F to 185°F
- Automatic (AUTO) reset — no manual intervention required after the system cools
- OEM York replacement part — ensures proper fit and function in compatible York equipment
- Protects heat exchangers and system components from overheating damage
- Interrupts burner operation upon high-limit detection to prevent unsafe conditions
- Reliable bimetal sensing element for accurate and repeatable temperature response
Product Specifications
- SKU / Part Number: S1-025-26366-001
- Brand: York
- Temperature Range: 105°F – 185°F
- Reset Type: Automatic (AUTO)
- Component Type: High-Limit Switch
Application
This limit switch is a critical safety component in York furnaces and forced-air heating systems. It is designed to shut down burner operation if the supply air or heat exchanger temperature rises above the set limit, preventing equipment damage, heat exchanger cracking, and potential fire hazards. The automatic reset function restores normal operation once temperatures fall back within the safe range, minimizing downtime and service calls.
Why Choose an OEM York Limit Switch?
Using a genuine York replacement part ensures compatibility with your existing control board and wiring harness, maintains manufacturer warranty compliance, and delivers the precise calibration needed for safe, efficient furnace operation. Always consult your equipment’s service manual and follow all applicable safety codes during installation.
