Lochinvar High Limit Switch - Boiler Safety Control

The Lochinvar High Limit Switch (also called a boiler high limit control, limit controller or overtemperature safety switch) is a safety device for Lochinvar boilers and hot water heating systems. It monitors water temperature. If the temperature rises above a safe operating point, it shuts down the burner or heating circuit. This helps protect the boiler and the system it serves from overheating.

Key Features:

• Genuine Lochinvar replacement safety control, designed for Lochinvar boiler and water heater product lines
• Overtemperature protection that cuts power to the burner or heating element when the temperature limit is reached
• Available in manual reset and automatic reset styles across the product line, so the right control can be matched to each boiler design
• Temperature sensing by capillary or snap-disc technology, depending on the model
• Part of the Lochinvar boiler safety controls and aquastat category, which covers limit, rollout and spill switches

A working high limit switch is a key part of safe boiler operation. Replacing a worn or tripped control with a genuine Lochinvar part helps keep the boiler operating as designed. Select the child item that matches your boiler's control requirements.