The Modine 5H0730570004 Vent Switch is a critical safety component engineered for precise thermal monitoring in high-performance heating systems

75-inch diameter provide a compact footprint for tight service spaces

How do I confirm compatibility with my existing 3100 series valve

This kit includes the necessary FV sensor assembly

Lennox 18J28 Limit Switch The Modine 5H0730570004 Vent SwitchWhen 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