
Lennox 98M73 Limit Switch
This Lennox 98M73 Limit Switch is a critical safety component designed for heavy-duty industrial and residential HVAC applications. Engineered for precision position sensing and thermal regulation, the 98M73 limit control ensures that equipment operating cycles remain within safe parameters by interrupting the electrical circuit when internal temperatures exceed preset thresholds. As a genuine Lennox OEM replacement part, this switch is specifically calibrated to meet the exact factory specifications of compatible Lennox 13GCSA and 13GCSXA series units, preventing the common performance drift associated with generic universal alternatives.
Technicians often identify this component by its secondary technical identifier, R01851A031. Weighing approximately 0.6 lbs, the robust construction provides reliable feedback to the system's control board, protecting the heat exchanger and blower assembly from thermal stress. Integrating this high-quality HVAC limit switch into your maintenance routine or emergency repair ensures seamless system response and long-term operational safety in demanding automation and heating environments.
Key Benefits for HVACR Contractors:- Precise Thermal Protection: Effectively shuts off equipment to prevent overheating and potential component failure.
- Direct OEM Compatibility: Engineered as a drop-in replacement for 98M73, ensuring perfect fitment in Lennox package units and furnaces.
- Enhanced System Safety: Provides accurate position sensing and rapid cut-out response to maintain rigid safety standards.
- Rugged Industrial Build: Built to withstand the high-cycle demands of industrial automation and residential heating systems.
What are the compatible Lennox models for this switch?
The Lennox 98M73 is natively compatible with several popular commercial and residential models, including the 13GCSA-24-068-P, 13GCSA-30-068X-P, and 13GCSA-36-068-P series.
How do I troubleshoot a failing limit switch?
If the blower runs continuously or the burners fail to ignite, check for continuity across the switch terminals. A tripped or open limit switch typically indicates restricted airflow, often caused by a dirty filter or a malfunctioning blower motor.
Can I use a universal limit switch instead of the 98M73?
While universal parts exist, using a genuine Lennox 98M73 is recommended to ensure the temperature setpoints and physical mounting align perfectly with the original equipment design, maintaining the safety integrity of the system.
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: $11.76
-65%$11.76
$4.12Lennox 98M73 Limit Switch
This Lennox 98M73 Limit Switch is a critical safety component designed for heavy-duty industrial and residential HVAC applications. Engineered for precision position sensing and thermal regulation, the 98M73 limit control ensures that equipment operating cycles remain within safe parameters by interrupting the electrical circuit when internal temperatures exceed preset thresholds. As a genuine Lennox OEM replacement part, this switch is specifically calibrated to meet the exact factory specifications of compatible Lennox 13GCSA and 13GCSXA series units, preventing the common performance drift associated with generic universal alternatives.
Technicians often identify this component by its secondary technical identifier, R01851A031. Weighing approximately 0.6 lbs, the robust construction provides reliable feedback to the system's control board, protecting the heat exchanger and blower assembly from thermal stress. Integrating this high-quality HVAC limit switch into your maintenance routine or emergency repair ensures seamless system response and long-term operational safety in demanding automation and heating environments.
Key Benefits for HVACR Contractors:- Precise Thermal Protection: Effectively shuts off equipment to prevent overheating and potential component failure.
- Direct OEM Compatibility: Engineered as a drop-in replacement for 98M73, ensuring perfect fitment in Lennox package units and furnaces.
- Enhanced System Safety: Provides accurate position sensing and rapid cut-out response to maintain rigid safety standards.
- Rugged Industrial Build: Built to withstand the high-cycle demands of industrial automation and residential heating systems.
What are the compatible Lennox models for this switch?
The Lennox 98M73 is natively compatible with several popular commercial and residential models, including the 13GCSA-24-068-P, 13GCSA-30-068X-P, and 13GCSA-36-068-P series.
How do I troubleshoot a failing limit switch?
If the blower runs continuously or the burners fail to ignite, check for continuity across the switch terminals. A tripped or open limit switch typically indicates restricted airflow, often caused by a dirty filter or a malfunctioning blower motor.
Can I use a universal limit switch instead of the 98M73?
While universal parts exist, using a genuine Lennox 98M73 is recommended to ensure the temperature setpoints and physical mounting align perfectly with the original equipment design, maintaining the safety integrity of the system.
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
This Lennox 98M73 Limit Switch is a critical safety component designed for heavy-duty industrial and residential HVAC applications. Engineered for precision position sensing and thermal regulation, the 98M73 limit control ensures that equipment operating cycles remain within safe parameters by interrupting the electrical circuit when internal temperatures exceed preset thresholds. As a genuine Lennox OEM replacement part, this switch is specifically calibrated to meet the exact factory specifications of compatible Lennox 13GCSA and 13GCSXA series units, preventing the common performance drift associated with generic universal alternatives.
Technicians often identify this component by its secondary technical identifier, R01851A031. Weighing approximately 0.6 lbs, the robust construction provides reliable feedback to the system's control board, protecting the heat exchanger and blower assembly from thermal stress. Integrating this high-quality HVAC limit switch into your maintenance routine or emergency repair ensures seamless system response and long-term operational safety in demanding automation and heating environments.
Key Benefits for HVACR Contractors:- Precise Thermal Protection: Effectively shuts off equipment to prevent overheating and potential component failure.
- Direct OEM Compatibility: Engineered as a drop-in replacement for 98M73, ensuring perfect fitment in Lennox package units and furnaces.
- Enhanced System Safety: Provides accurate position sensing and rapid cut-out response to maintain rigid safety standards.
- Rugged Industrial Build: Built to withstand the high-cycle demands of industrial automation and residential heating systems.
What are the compatible Lennox models for this switch?
The Lennox 98M73 is natively compatible with several popular commercial and residential models, including the 13GCSA-24-068-P, 13GCSA-30-068X-P, and 13GCSA-36-068-P series.
How do I troubleshoot a failing limit switch?
If the blower runs continuously or the burners fail to ignite, check for continuity across the switch terminals. A tripped or open limit switch typically indicates restricted airflow, often caused by a dirty filter or a malfunctioning blower motor.
Can I use a universal limit switch instead of the 98M73?
While universal parts exist, using a genuine Lennox 98M73 is recommended to ensure the temperature setpoints and physical mounting align perfectly with the original equipment design, maintaining the safety integrity of the system.
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.












