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Contractor Grade: Built to withstand the high-cycle demands of residential and light commercial heating and cooling systems
sufficient for multiple contactors and complex control logic
For contractors looking to reduce maintenance callbacks
Integrated safety protocols include a high-temperature cut-off and low-pressure switch interface to prevent equipment failure during thermal overloads
Laars Heating Systems 2400-110 Stack Switch 320734-701 Contractor Grade: Built to withstandThe Laars Heating Systems 2400 110 Stack Switch is a critical exhaust temperature sensor designed for commercial and residential boiler systems. As an OEM Laars replacement part, this bimetallic stack relay monitors flue gas temperatures to provide essential furnace safety control. Engineered specifically for Mark II H Series (sizes 60 130) and Mark II 9600 models (HWG & CB, sizes 150 250), it ensures the burner only operates when a safe draft and
