this plate is an essential thermostat accessory for maintaining a high standard of workmanship during system upgrades or replacements of larger legacy units

oil-filled aluminum case with a patented pressure-sensitive interrupter (PSI) for safety

ensuring a drop-in fit for fast field installation

Frequent tripping usually indicates an overheating issue often caused by a dirty air filter

Essential for restoring furnace manifold pressure and pilot flame stability

York S1-025-30321-700 Limit Switch this plate is an essentialThe York S1 025 30321 700 Limit Switch is a critical safety component engineered for precise thermal monitoring in high output HVAC furnace systems. This 185F manual reset limit switch is designed to break the electrical circuit if the heat exchanger exceeds its safe operational threshold, preventing catastrophic equipment failure and ensuring safe discharge air temperatures. Featuring a changeover (CO) configuration, this part offers versatile