Lennox 18K80 Limit switch
The Lennox 18K80 Limit switch is a mission-critical OEM replacement part designed for high-accuracy thermal protection in residential and light commercial HVAC systems. This 130-160F AUTO Limit switch features a normally closed contact configuration, engineered to open as temperatures rise toward the 160°F threshold and automatically reset when the system cools to 130°F. Built for automatic reset limit control, this component features a 3-inch insertion length, making it a direct fit for many Lennox gas furnace models and air handlers where precise safety cut-offs are required on the heat exchanger or plenum.
For service technicians, the 18K8001 limit control is a standard-issue solution for troubleshooting frequent furnace limit switch tripping or identifying failures in the Lennox safety circuit. This genuine Lennox HVAC part ensures the system stays within its designed thermal envelope, preventing expensive component damage and maintaining operational safety. Its robust construction is rated for high-cycle thermal environments, ensuring long-term reliability without the drift common in lower-grade universal replacements.
Key Benefits- Precise Safety Calibration: Factory-set to open at 160°F and close at 130°F for consistent furnace protection.
- Direct OEM Integration: Exact physical and electrical replacement for Lennox 18K8001 and related Armstrong or Ducane part numbers.
- Automatic Reset Functionality: Restores circuit continuity automatically after reaching the lower temperature differential, reducing unnecessary service calls.
- Durable Construction: Heavy-duty materials designed to withstand repeated thermal cycling in high-heat industrial and residential applications.
What causes a Lennox 18K80 limit switch to trip frequently?
Frequent tripping usually indicates restricted airflow, such as a dirty air filter, blocked return ducts, or a failing blower motor, causing the heat exchanger to exceed the 160°F safety limit.
Is this switch compatible with older Lennox G series furnaces?
Yes, the 18K80 is a common limit control for various Lennox series; however, always verify the L# (L160-30) and insertion length match your specific cabinet requirements.
Can I manually reset the 18K80 switch?
No, this specific model is an automatic reset switch. If the system does not restore power after cooling, the switch may be failed in the open position and requires replacement.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $9.48
-65%$9.48
$3.32Lennox 18K80 Limit switch
The Lennox 18K80 Limit switch is a mission-critical OEM replacement part designed for high-accuracy thermal protection in residential and light commercial HVAC systems. This 130-160F AUTO Limit switch features a normally closed contact configuration, engineered to open as temperatures rise toward the 160°F threshold and automatically reset when the system cools to 130°F. Built for automatic reset limit control, this component features a 3-inch insertion length, making it a direct fit for many Lennox gas furnace models and air handlers where precise safety cut-offs are required on the heat exchanger or plenum.
For service technicians, the 18K8001 limit control is a standard-issue solution for troubleshooting frequent furnace limit switch tripping or identifying failures in the Lennox safety circuit. This genuine Lennox HVAC part ensures the system stays within its designed thermal envelope, preventing expensive component damage and maintaining operational safety. Its robust construction is rated for high-cycle thermal environments, ensuring long-term reliability without the drift common in lower-grade universal replacements.
Key Benefits- Precise Safety Calibration: Factory-set to open at 160°F and close at 130°F for consistent furnace protection.
- Direct OEM Integration: Exact physical and electrical replacement for Lennox 18K8001 and related Armstrong or Ducane part numbers.
- Automatic Reset Functionality: Restores circuit continuity automatically after reaching the lower temperature differential, reducing unnecessary service calls.
- Durable Construction: Heavy-duty materials designed to withstand repeated thermal cycling in high-heat industrial and residential applications.
What causes a Lennox 18K80 limit switch to trip frequently?
Frequent tripping usually indicates restricted airflow, such as a dirty air filter, blocked return ducts, or a failing blower motor, causing the heat exchanger to exceed the 160°F safety limit.
Is this switch compatible with older Lennox G series furnaces?
Yes, the 18K80 is a common limit control for various Lennox series; however, always verify the L# (L160-30) and insertion length match your specific cabinet requirements.
Can I manually reset the 18K80 switch?
No, this specific model is an automatic reset switch. If the system does not restore power after cooling, the switch may be failed in the open position and requires replacement.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Lennox 18K80 Limit switch is a mission-critical OEM replacement part designed for high-accuracy thermal protection in residential and light commercial HVAC systems. This 130-160F AUTO Limit switch features a normally closed contact configuration, engineered to open as temperatures rise toward the 160°F threshold and automatically reset when the system cools to 130°F. Built for automatic reset limit control, this component features a 3-inch insertion length, making it a direct fit for many Lennox gas furnace models and air handlers where precise safety cut-offs are required on the heat exchanger or plenum.
For service technicians, the 18K8001 limit control is a standard-issue solution for troubleshooting frequent furnace limit switch tripping or identifying failures in the Lennox safety circuit. This genuine Lennox HVAC part ensures the system stays within its designed thermal envelope, preventing expensive component damage and maintaining operational safety. Its robust construction is rated for high-cycle thermal environments, ensuring long-term reliability without the drift common in lower-grade universal replacements.
Key Benefits- Precise Safety Calibration: Factory-set to open at 160°F and close at 130°F for consistent furnace protection.
- Direct OEM Integration: Exact physical and electrical replacement for Lennox 18K8001 and related Armstrong or Ducane part numbers.
- Automatic Reset Functionality: Restores circuit continuity automatically after reaching the lower temperature differential, reducing unnecessary service calls.
- Durable Construction: Heavy-duty materials designed to withstand repeated thermal cycling in high-heat industrial and residential applications.
What causes a Lennox 18K80 limit switch to trip frequently?
Frequent tripping usually indicates restricted airflow, such as a dirty air filter, blocked return ducts, or a failing blower motor, causing the heat exchanger to exceed the 160°F safety limit.
Is this switch compatible with older Lennox G series furnaces?
Yes, the 18K80 is a common limit control for various Lennox series; however, always verify the L# (L160-30) and insertion length match your specific cabinet requirements.
Can I manually reset the 18K80 switch?
No, this specific model is an automatic reset switch. If the system does not restore power after cooling, the switch may be failed in the open position and requires replacement.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
