Lennox 18J28 Limit Switch carbon dioxide

carbon dioxide

oil-filled dielectric fluid within a robust aluminum housing for superior thermal dissipation and pressure-sensitive internal protection

securing reliable operation in gas-fired heating environments

allows for flexible directional aiming

and 6000 series aluminum alloys

Lennox 18J28 Limit Switch carbon dioxideWhen you're troubleshooting a furnace that's short cycling or a blower motor that won't quit, the Lennox 18J28 Limit Switch is a primary diagnostic point. This genuine OEM furnace high limit switch is a critical safety component designed to monitor heat exchanger temperatures and prevent hazardous overheating. Featuring a 165F CO (Cut Out) and 135F CI (Cut In) thermal profile, this auto reset limit switch ensures the burner circuit opens if internal