Lennox 71W41 Limit Switch
The Lennox 71W41 Limit Switch is a critical safety component designed for precise thermal monitoring in high-efficiency Lennox HVAC systems. Engineered as a STILT limit control, this L135-30F limit switch features a primary actuation point of 135°F to interrupt the heating circuit during hazardous over-temperature conditions. Once the plenum temperature cools to a safe 105°F reset point, the switch automatically restores the circuit, ensuring continuous operational integrity without manual intervention. This OEM Lennox replacement part uses a SPDT contact configuration and a durable lever-actuator design, making it a drop-in solution for contractors servicing specific furnace and air handler models where high-limit reliability is non-negotiable.
Built to withstand demanding industrial and residential environments, the 71W41 is rated for 120VAC at 15A and features a white sleeve for quick identification during field maintenance. Technical specifications include a 5-inch overall length (OAL) and left-hand orientation, essential for proper fitment in narrow heat exchanger compartments. Professionals rely on this furnace high limit switch to prevent equipment damage and ensure system safety by providing accurate, repeatable temperature sensing across its operational range of -40°F to 180°F.
Key Benefits of the Lennox 71W41:
- Precise Thermal Calibration: Factory-set to open at 135°F and close at 105°F for consistent safety performance.
- OEM Compatibility: Replaces Lennox 102857-01 and other compatible factory-installed limit controls.
- Automatic Reset: Self-correcting design eliminates the need for manual resets after standard cooling cycles.
- Industrial Build Quality: Constructed with NEMA 1 rated enclosure standards for longevity in harsh environments.
- Simplified Installation: Standard 3.5 x 2.5 x 1.5 inch dimensions and lever actuator allow for rapid securement.
Common Questions:
What is the difference between an L135-30F and other limit switches?
The "L135" indicates the high-temperature cutout (135°F), while the "-30F" indicates the temperature differential from the cutout point at which the switch resets (135°F - 30°F = 105°F reset).
Can I use the 71W41 in a different brand furnace?
While technical specs may match, this is a genuine Lennox part. Always verify the specific OEM part number or consult our technical team to ensure the orientation and mounting style match your specific air handler or furnace.
Why is my limit switch repeatedly tripping?
Unintended trips are often caused by restricted airflow, such as a clogged filter or failing blower motor, rather than a faulty switch. Always diagnose the root cause of the over-temperature condition before replacing the control.
This item is not eligible for free shipping.
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.
Lennox 71W41 Limit Switch
The Lennox 71W41 Limit Switch is a critical safety component designed for precise thermal monitoring in high-efficiency Lennox HVAC systems. Engineered as a STILT limit control, this L135-30F limit switch features a primary actuation point of 135°F to interrupt the heating circuit during hazardous over-temperature conditions. Once the plenum temperature cools to a safe 105°F reset point, the switch automatically restores the circuit, ensuring continuous operational integrity without manual intervention. This OEM Lennox replacement part uses a SPDT contact configuration and a durable lever-actuator design, making it a drop-in solution for contractors servicing specific furnace and air handler models where high-limit reliability is non-negotiable.
Built to withstand demanding industrial and residential environments, the 71W41 is rated for 120VAC at 15A and features a white sleeve for quick identification during field maintenance. Technical specifications include a 5-inch overall length (OAL) and left-hand orientation, essential for proper fitment in narrow heat exchanger compartments. Professionals rely on this furnace high limit switch to prevent equipment damage and ensure system safety by providing accurate, repeatable temperature sensing across its operational range of -40°F to 180°F.
Key Benefits of the Lennox 71W41:
- Precise Thermal Calibration: Factory-set to open at 135°F and close at 105°F for consistent safety performance.
- OEM Compatibility: Replaces Lennox 102857-01 and other compatible factory-installed limit controls.
- Automatic Reset: Self-correcting design eliminates the need for manual resets after standard cooling cycles.
- Industrial Build Quality: Constructed with NEMA 1 rated enclosure standards for longevity in harsh environments.
- Simplified Installation: Standard 3.5 x 2.5 x 1.5 inch dimensions and lever actuator allow for rapid securement.
Common Questions:
What is the difference between an L135-30F and other limit switches?
The "L135" indicates the high-temperature cutout (135°F), while the "-30F" indicates the temperature differential from the cutout point at which the switch resets (135°F - 30°F = 105°F reset).
Can I use the 71W41 in a different brand furnace?
While technical specs may match, this is a genuine Lennox part. Always verify the specific OEM part number or consult our technical team to ensure the orientation and mounting style match your specific air handler or furnace.
Why is my limit switch repeatedly tripping?
Unintended trips are often caused by restricted airflow, such as a clogged filter or failing blower motor, rather than a faulty switch. Always diagnose the root cause of the over-temperature condition before replacing the control.
This item is not eligible for free shipping.
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 71W41 Limit Switch is a critical safety component designed for precise thermal monitoring in high-efficiency Lennox HVAC systems. Engineered as a STILT limit control, this L135-30F limit switch features a primary actuation point of 135°F to interrupt the heating circuit during hazardous over-temperature conditions. Once the plenum temperature cools to a safe 105°F reset point, the switch automatically restores the circuit, ensuring continuous operational integrity without manual intervention. This OEM Lennox replacement part uses a SPDT contact configuration and a durable lever-actuator design, making it a drop-in solution for contractors servicing specific furnace and air handler models where high-limit reliability is non-negotiable.
Built to withstand demanding industrial and residential environments, the 71W41 is rated for 120VAC at 15A and features a white sleeve for quick identification during field maintenance. Technical specifications include a 5-inch overall length (OAL) and left-hand orientation, essential for proper fitment in narrow heat exchanger compartments. Professionals rely on this furnace high limit switch to prevent equipment damage and ensure system safety by providing accurate, repeatable temperature sensing across its operational range of -40°F to 180°F.
Key Benefits of the Lennox 71W41:
- Precise Thermal Calibration: Factory-set to open at 135°F and close at 105°F for consistent safety performance.
- OEM Compatibility: Replaces Lennox 102857-01 and other compatible factory-installed limit controls.
- Automatic Reset: Self-correcting design eliminates the need for manual resets after standard cooling cycles.
- Industrial Build Quality: Constructed with NEMA 1 rated enclosure standards for longevity in harsh environments.
- Simplified Installation: Standard 3.5 x 2.5 x 1.5 inch dimensions and lever actuator allow for rapid securement.
Common Questions:
What is the difference between an L135-30F and other limit switches?
The "L135" indicates the high-temperature cutout (135°F), while the "-30F" indicates the temperature differential from the cutout point at which the switch resets (135°F - 30°F = 105°F reset).
Can I use the 71W41 in a different brand furnace?
While technical specs may match, this is a genuine Lennox part. Always verify the specific OEM part number or consult our technical team to ensure the orientation and mounting style match your specific air handler or furnace.
Why is my limit switch repeatedly tripping?
Unintended trips are often caused by restricted airflow, such as a clogged filter or failing blower motor, rather than a faulty switch. Always diagnose the root cause of the over-temperature condition before replacing the control.
This item is not eligible for free shipping.
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.
