Lennox 80K89 Limit Switch
The Lennox 80K89 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces. Engineered as a 150-180F AUTO Limit Switch, this L180-30F thermal cutout ensures the burner assembly shuts down if internal temperatures exceed the 180°F threshold, preventing heat exchanger damage. Once the plenum cools by approximately 30°F, the switch automatically resets, restoring normal furnace cycles. This Lennox replacement limit switch is a direct OEM substitute for various G24, G32, and G40 series units, maintaining the exact furnace high limit switch specifications required for safe operation. Contractors should verify the temperature range and insertion depth to ensure compatibility with Lennox furnace parts. Proper airflow management is essential, as recurring trips on this surface mount limit switch often indicate clogged filters or blower motor failure. Integrating this HVAC safety switch ensures reliable over-temperature protection and system longevity in high-demand heating applications.
Technical Specifications and Benefits
- Factory Calibrated Temperature: Opens at 180°F and automatically resets at 150°F for consistent thermal cycling.
- OEM Compatibility: Specifically engineered for Lennox furnace troubleshooting and direct replacement of legacy 80K89 models.
- Durable Construction: Built to withstand the high-temperature environment of the furnace heat exchanger.
- Automatic Reset: Eliminates the need for manual intervention once the system returns to safe operating parameters.
- Critical Safety Integration: Prevents catastrophic equipment failure by monitoring for restricted airflow or overheating conditions.
Common Questions
What causes a Lennox 80K89 limit switch to trip repeatedly?
Frequent tripping is usually caused by restricted airflow, such as a dirty air filter, blocked return vents, or a failing blower motor, which prevents the heat exchanger from cooling properly.
Can I replace a different temperature-rated switch with the 80K89?
No. Limit switches are safety devices with specific temperature setpoints. Using a switch with a different rating than the original equipment specification can lead to unsafe operating conditions or furnace damage.
Is this switch compatible with Lennox G24 and G32 series furnaces?
Yes, the 80K89 is a standard OEM replacement component for several Lennox furnace lines including the G24, G32, and G40 series, provided the original part number matches.
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: $11.52
-65%$11.52
$4.03Lennox 80K89 Limit Switch
The Lennox 80K89 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces. Engineered as a 150-180F AUTO Limit Switch, this L180-30F thermal cutout ensures the burner assembly shuts down if internal temperatures exceed the 180°F threshold, preventing heat exchanger damage. Once the plenum cools by approximately 30°F, the switch automatically resets, restoring normal furnace cycles. This Lennox replacement limit switch is a direct OEM substitute for various G24, G32, and G40 series units, maintaining the exact furnace high limit switch specifications required for safe operation. Contractors should verify the temperature range and insertion depth to ensure compatibility with Lennox furnace parts. Proper airflow management is essential, as recurring trips on this surface mount limit switch often indicate clogged filters or blower motor failure. Integrating this HVAC safety switch ensures reliable over-temperature protection and system longevity in high-demand heating applications.
Technical Specifications and Benefits
- Factory Calibrated Temperature: Opens at 180°F and automatically resets at 150°F for consistent thermal cycling.
- OEM Compatibility: Specifically engineered for Lennox furnace troubleshooting and direct replacement of legacy 80K89 models.
- Durable Construction: Built to withstand the high-temperature environment of the furnace heat exchanger.
- Automatic Reset: Eliminates the need for manual intervention once the system returns to safe operating parameters.
- Critical Safety Integration: Prevents catastrophic equipment failure by monitoring for restricted airflow or overheating conditions.
Common Questions
What causes a Lennox 80K89 limit switch to trip repeatedly?
Frequent tripping is usually caused by restricted airflow, such as a dirty air filter, blocked return vents, or a failing blower motor, which prevents the heat exchanger from cooling properly.
Can I replace a different temperature-rated switch with the 80K89?
No. Limit switches are safety devices with specific temperature setpoints. Using a switch with a different rating than the original equipment specification can lead to unsafe operating conditions or furnace damage.
Is this switch compatible with Lennox G24 and G32 series furnaces?
Yes, the 80K89 is a standard OEM replacement component for several Lennox furnace lines including the G24, G32, and G40 series, provided the original part number matches.
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.
Product Information
Product Information
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Description
The Lennox 80K89 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces. Engineered as a 150-180F AUTO Limit Switch, this L180-30F thermal cutout ensures the burner assembly shuts down if internal temperatures exceed the 180°F threshold, preventing heat exchanger damage. Once the plenum cools by approximately 30°F, the switch automatically resets, restoring normal furnace cycles. This Lennox replacement limit switch is a direct OEM substitute for various G24, G32, and G40 series units, maintaining the exact furnace high limit switch specifications required for safe operation. Contractors should verify the temperature range and insertion depth to ensure compatibility with Lennox furnace parts. Proper airflow management is essential, as recurring trips on this surface mount limit switch often indicate clogged filters or blower motor failure. Integrating this HVAC safety switch ensures reliable over-temperature protection and system longevity in high-demand heating applications.
Technical Specifications and Benefits
- Factory Calibrated Temperature: Opens at 180°F and automatically resets at 150°F for consistent thermal cycling.
- OEM Compatibility: Specifically engineered for Lennox furnace troubleshooting and direct replacement of legacy 80K89 models.
- Durable Construction: Built to withstand the high-temperature environment of the furnace heat exchanger.
- Automatic Reset: Eliminates the need for manual intervention once the system returns to safe operating parameters.
- Critical Safety Integration: Prevents catastrophic equipment failure by monitoring for restricted airflow or overheating conditions.
Common Questions
What causes a Lennox 80K89 limit switch to trip repeatedly?
Frequent tripping is usually caused by restricted airflow, such as a dirty air filter, blocked return vents, or a failing blower motor, which prevents the heat exchanger from cooling properly.
Can I replace a different temperature-rated switch with the 80K89?
No. Limit switches are safety devices with specific temperature setpoints. Using a switch with a different rating than the original equipment specification can lead to unsafe operating conditions or furnace damage.
Is this switch compatible with Lennox G24 and G32 series furnaces?
Yes, the 80K89 is a standard OEM replacement component for several Lennox furnace lines including the G24, G32, and G40 series, provided the original part number matches.
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.
