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The Carrier HH18HA420 Auto Limit Switch is a critical HVAC safety device designed to monitor internal furnace temperatures and protect the heat exchanger from thermal stress
Vandalism Resistance: Robust locking thermostat cover prevents unauthorized setpoint changes in schools
the 3/16" diameter and coppered steel construction allow for clean threading using standard dies
Mercury-Free Design: Reliable snap-action switching eliminates environmental hazards and leveling concerns during mounting
Lennox 14C24 Cover Freon The Carrier HH18HA420 Auto LimitThe Lennox 14C24 Collector Box Cover w Gasket is a critical OEM replacement component designed to maintain the structural integrity and vacuum seal of your furnace's secondary heat exchanger system. Built for high efficiency Lennox gas furnaces, this 14C24 collector box cover ensures that combustion byproducts and condensate are properly managed within the flue system without atmospheric leakage. The included gasket provides a precision fit,
