Lennox 11J09 Pressure Switch
The Lennox 11J09 Pressure Switch is a high-precision, single-stage OEM combustion air pressure switch designed for specific Lennox and Armstrong furnace applications. Technicians know that maintaining exact pressure differentials is critical for safe system sequencing; this component is factory-calibrated to actuate at 0.60" W.C. (Water Column). This S1-11J09 induction fan pressure switch replaces legacy part numbers 11U65 and 104106-03, ensuring your equipment meets original manufacturer ventilation standards. By monitoring the air pressure within the venting system, it confirms proper inducer motor operation and establishes adequate airflow before allowing the ignition sequence to proceed, effectively preventing furnace pressure switch lockout issues.
Key Benefits:
- Verified Compatibility: Authentic Lennox 11J09 replacement for Armstrong and Lennox furnaces requiring a 0.60" WC set point.
- System Safety: Prevents gas valve activation if the draft inducer fails to provide sufficient static pressure.
- Reliable Operation: Built with high-quality internal diaphragm materials to resist cycling fatigue in high-demand environments.
- Drop-in Fit: Standardized mounting and terminal configuration for rapid field installation.
Common Questions:
- Can I use a different pressure rating if the 11J09 is unavailable? No, HVAC safety circuits require the exact 0.60" W.C. rating specified by the manufacturer to ensure proper venting and combustion.
- What are the signs of a failing Lennox 11J09? Common symptoms include the inducer motor running continuously without ignition, or the control board flashing a code for "Pressure Switch Stuck Open."
- Is this an OEM or aftermarket part? This is a genuine Lennox OEM pressure switch, ensuring it meets the specific electrical and pneumatic tolerances of your HVAC unit.
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: $24.34
-65%$24.34
$8.52Product Information
Product Information
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Description
The Lennox 11J09 Pressure Switch is a high-precision, single-stage OEM combustion air pressure switch designed for specific Lennox and Armstrong furnace applications. Technicians know that maintaining exact pressure differentials is critical for safe system sequencing; this component is factory-calibrated to actuate at 0.60" W.C. (Water Column). This S1-11J09 induction fan pressure switch replaces legacy part numbers 11U65 and 104106-03, ensuring your equipment meets original manufacturer ventilation standards. By monitoring the air pressure within the venting system, it confirms proper inducer motor operation and establishes adequate airflow before allowing the ignition sequence to proceed, effectively preventing furnace pressure switch lockout issues.
Key Benefits:
- Verified Compatibility: Authentic Lennox 11J09 replacement for Armstrong and Lennox furnaces requiring a 0.60" WC set point.
- System Safety: Prevents gas valve activation if the draft inducer fails to provide sufficient static pressure.
- Reliable Operation: Built with high-quality internal diaphragm materials to resist cycling fatigue in high-demand environments.
- Drop-in Fit: Standardized mounting and terminal configuration for rapid field installation.
Common Questions:
- Can I use a different pressure rating if the 11J09 is unavailable? No, HVAC safety circuits require the exact 0.60" W.C. rating specified by the manufacturer to ensure proper venting and combustion.
- What are the signs of a failing Lennox 11J09? Common symptoms include the inducer motor running continuously without ignition, or the control board flashing a code for "Pressure Switch Stuck Open."
- Is this an OEM or aftermarket part? This is a genuine Lennox OEM pressure switch, ensuring it meets the specific electrical and pneumatic tolerances of your HVAC unit.
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.
