Product Overview
Williams Vent Safety Switch (Vent Limit Switch) is an essential safety component specifically designed for Williams Monterey Counterflow Top Vent Furnaces. This reliable replacement switch is compatible with model numbers 3509821 and 3509822, helping to regulate and monitor venting to prevent overheating and maintain safe furnace operation.
This OEM-approved vent limit switch enhances furnace safety by ensuring proper venting, crucial for both performance and safety in counterflow heating systems. Replace a worn or faulty vent switch with this high-quality part to keep your Monterey furnace running safely and efficiently.
Click here to download the replacement parts lists and exploded view diagrams. Please refer to the appropriate section for your specific furnace model.
