3" HIGH LIMIT SWITCH L150-40F 3 High Limit Control Switches
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Pickup available at 75 Blue Mountain St #3
Usually ready in 24 hours
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Ensure the safe and efficient operation of your heating system with this premium 3-inch High Limit Switch. As a critical safety component in HVAC and forced-air furnaces, this high limit control switch is designed to monitor internal temperatures and prevent overheating. When the system reaches the preset thermal threshold of 150°F, the switch automatically interrupts the electrical circuit to shut down the heating element or burner, protecting your heat exchanger from damage. This L150-40F model features a 40-degree differential, meaning it will automatically reset and restore power once the temperature cools to 110°F. If your furnace is short-cycling or failing to maintain a consistent flame, replacing a worn or faulty thermal limit sensor is essential for maintaining home safety and appliance longevity.
Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.
1-778-759-9864Mon–Sat 8AM–9PM PST · Or email parts@bcfurnace.com
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