Description
The York S1-025-31814-000 Auto Limit Switch is a genuine OEM safety control component for York (and compatible) furnaces and HVAC systems. Designed to monitor airflow and temperature conditions, this limit switch helps prevent overheating by interrupting system operation if the temperature exceeds safe thresholds. Ideal for replacement during maintenance or repair, this part restores safe, efficient, and reliable furnace performance — protecting your equipment, improving safety, and ensuring long-term HVAC system integrity.
Features
- Genuine OEM Part – Manufactured by York for perfect compatibility and dependable performance.
- Safety Over‑Temperature Protection – Automatically interrupts operation when internal temperature exceeds safe limits, preventing overheating and system damage.
- Automatic Reset or Manual Reset Options – Designed to safely shut down system on high temperature and resume once conditions return to normal (depending on furnace model).
- Restores Safe Furnace Operation – Replaces worn or faulty limit switches to ensure your heating system meets safety standards and operates reliably.
- Easy OEM‑Standard Fitment – Plug‑and‑play replacement for HVAC professionals; no modification required.
- Temperature Ratings: Opens at 150 °F (opens on rise), Closes at 120 °F (on fall)






