Lennox 69W36 Limit Switch
The Lennox 69W36 Limit Switch is a critical OEM safety device designed to regulate thermal limits in Lennox furnaces and residential heating systems. Calibrated as an L150-30F limit switch, this component is engineered to automatically interrupt the electrical circuit when internal temperatures reach a threshold of 150°F, preventing heat exchanger damage and potential fire hazards. As an automatic reset switch, it will close the circuit once the system cools to 120°F (a 30°F differential), restoring normal furnace operation. For many contractors, this part (also referenced as 102135-03) is a standard replacement for 80AF1 and EL180 series units. Its durable, heat-resistant construction ensures high-cycle reliability in high-static environments. When diagnosing a furnace limit switch lockout, verifying the 150°F trip point is essential to maintain HVAC safety standards and system efficiency. This genuine Lennox component provides the exact factory specifications required for a direct-fit, professional-grade repair.
Key Benefits for Technicians:- Precise Thermal Protection: Factory-calibrated 150°F cut-out prevents system overheating and protects the heat exchanger from thermal stress.
- Automatic Reset Function: Features a 30°F differential (resets at 120°F), reducing unnecessary service calls by restoring operation after a temporary high-temp event.
- Broad Compatibility: Direct OEM replacement for Lennox, Armstrong, and Ducane models including 102135-03 and 69W36.
- Durable Construction: Built with high-grade, heat-resistant materials for a long service life in the furnace’s hot air stream.
- What causes a Lennox 69W36 to trip frequently? Usually, this is due to restricted airflow from a dirty filter, blocked return air, or a failing blower motor, which drives up the plenum temperature.
- Can I bypass this switch for testing? Never bypass a limit switch except for momentary diagnostic testing by a qualified technician; it is a primary safety device.
- Is this an OEM or aftermarket part? This is a genuine Lennox OEM part, ensuring the exact mounting footprint and temperature calibration for compatible models.
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: $26.42
-65%$26.42
$9.25Lennox 69W36 Limit Switch
The Lennox 69W36 Limit Switch is a critical OEM safety device designed to regulate thermal limits in Lennox furnaces and residential heating systems. Calibrated as an L150-30F limit switch, this component is engineered to automatically interrupt the electrical circuit when internal temperatures reach a threshold of 150°F, preventing heat exchanger damage and potential fire hazards. As an automatic reset switch, it will close the circuit once the system cools to 120°F (a 30°F differential), restoring normal furnace operation. For many contractors, this part (also referenced as 102135-03) is a standard replacement for 80AF1 and EL180 series units. Its durable, heat-resistant construction ensures high-cycle reliability in high-static environments. When diagnosing a furnace limit switch lockout, verifying the 150°F trip point is essential to maintain HVAC safety standards and system efficiency. This genuine Lennox component provides the exact factory specifications required for a direct-fit, professional-grade repair.
Key Benefits for Technicians:- Precise Thermal Protection: Factory-calibrated 150°F cut-out prevents system overheating and protects the heat exchanger from thermal stress.
- Automatic Reset Function: Features a 30°F differential (resets at 120°F), reducing unnecessary service calls by restoring operation after a temporary high-temp event.
- Broad Compatibility: Direct OEM replacement for Lennox, Armstrong, and Ducane models including 102135-03 and 69W36.
- Durable Construction: Built with high-grade, heat-resistant materials for a long service life in the furnace’s hot air stream.
- What causes a Lennox 69W36 to trip frequently? Usually, this is due to restricted airflow from a dirty filter, blocked return air, or a failing blower motor, which drives up the plenum temperature.
- Can I bypass this switch for testing? Never bypass a limit switch except for momentary diagnostic testing by a qualified technician; it is a primary safety device.
- Is this an OEM or aftermarket part? This is a genuine Lennox OEM part, ensuring the exact mounting footprint and temperature calibration for compatible models.
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 69W36 Limit Switch is a critical OEM safety device designed to regulate thermal limits in Lennox furnaces and residential heating systems. Calibrated as an L150-30F limit switch, this component is engineered to automatically interrupt the electrical circuit when internal temperatures reach a threshold of 150°F, preventing heat exchanger damage and potential fire hazards. As an automatic reset switch, it will close the circuit once the system cools to 120°F (a 30°F differential), restoring normal furnace operation. For many contractors, this part (also referenced as 102135-03) is a standard replacement for 80AF1 and EL180 series units. Its durable, heat-resistant construction ensures high-cycle reliability in high-static environments. When diagnosing a furnace limit switch lockout, verifying the 150°F trip point is essential to maintain HVAC safety standards and system efficiency. This genuine Lennox component provides the exact factory specifications required for a direct-fit, professional-grade repair.
Key Benefits for Technicians:- Precise Thermal Protection: Factory-calibrated 150°F cut-out prevents system overheating and protects the heat exchanger from thermal stress.
- Automatic Reset Function: Features a 30°F differential (resets at 120°F), reducing unnecessary service calls by restoring operation after a temporary high-temp event.
- Broad Compatibility: Direct OEM replacement for Lennox, Armstrong, and Ducane models including 102135-03 and 69W36.
- Durable Construction: Built with high-grade, heat-resistant materials for a long service life in the furnace’s hot air stream.
- What causes a Lennox 69W36 to trip frequently? Usually, this is due to restricted airflow from a dirty filter, blocked return air, or a failing blower motor, which drives up the plenum temperature.
- Can I bypass this switch for testing? Never bypass a limit switch except for momentary diagnostic testing by a qualified technician; it is a primary safety device.
- Is this an OEM or aftermarket part? This is a genuine Lennox OEM part, ensuring the exact mounting footprint and temperature calibration for compatible models.
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.
