Lennox 17U20 Pressure Switch
The Lennox 17U20 Pressure Switch is a high-precision sensing component engineered for critical monitoring in residential and commercial HVACR systems. This OEM Lennox 104371-10 replacement part is designed to actuate at 1.00 inch W.C., providing essential safety interlocking for furnace draft inducer motors and air handling units. Built with a sensitive diaphragm and a robust SPST-N.O. contact configuration, it ensures the electrical circuit closes only when the system achieves proper static pressure, preventing hazardous conditions like backdrafting or incomplete combustion. Rated for 5 Amp resistive at 24 VAC, this switch integrates seamlessly into low-voltage control strings. Whether you are troubleshooting a pressure switch stuck open or performing a routine HVAC system maintenance call, the 17U20 pressure switch delivers the reliability required for 0.25 to 25 IWC environments. Its durable construction is specifically vetted for the demanding thermal cycles found in modern air handling units and high-efficiency furnaces.
Key Benefits- Precise Actuation: Calibrated to trigger at exactly 1.00 inch water column to ensure proper airflow before ignition.
- Industrial Durability: Constructed with high-grade materials to withstand the corrosive environments of flue gas and high humidity.
- Universal Compatibility: Fits a wide range of Lennox equipment as a direct OEM replacement part (104371-10).
- Enhanced Safety: High-sensitivity diaphragm detects even minor drops in pressure, protecting the heat exchanger and system longevity.
- Simple Integration: Standard 1/4 inch quick-connect terminals and compact mounting footprint for fast field replacement.
What are the symptoms of a failing Lennox 17U20 pressure switch?
Common signs include the furnace failing to ignite, the inducer motor running continuously without a burner flame, or diagnostic codes indicating a "pressure switch stuck open" error. This often occurs due to diaphragm fatigue or debris in the sensing tube.
Can this switch be used in high-altitude applications?
The 17U20 is specifically calibrated for an actuation set point of 1.00" W.C. Always verify your specific model's altitude rating in the manufacturer’s service manual, as high-altitude kits may require different pressure thresholds for safe operation.
Is the 17U20 adjustable for different pressure ranges?
While some generic switches allow field adjustment, this OEM-spec part is factory-set to ensure high accuracy and system safety. It is recommended to use the fixed 1.00" W.C. setting to maintain the original equipment design specifications.
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.
Original: $24.86
-65%$24.86
$8.70Lennox 17U20 Pressure Switch
The Lennox 17U20 Pressure Switch is a high-precision sensing component engineered for critical monitoring in residential and commercial HVACR systems. This OEM Lennox 104371-10 replacement part is designed to actuate at 1.00 inch W.C., providing essential safety interlocking for furnace draft inducer motors and air handling units. Built with a sensitive diaphragm and a robust SPST-N.O. contact configuration, it ensures the electrical circuit closes only when the system achieves proper static pressure, preventing hazardous conditions like backdrafting or incomplete combustion. Rated for 5 Amp resistive at 24 VAC, this switch integrates seamlessly into low-voltage control strings. Whether you are troubleshooting a pressure switch stuck open or performing a routine HVAC system maintenance call, the 17U20 pressure switch delivers the reliability required for 0.25 to 25 IWC environments. Its durable construction is specifically vetted for the demanding thermal cycles found in modern air handling units and high-efficiency furnaces.
Key Benefits- Precise Actuation: Calibrated to trigger at exactly 1.00 inch water column to ensure proper airflow before ignition.
- Industrial Durability: Constructed with high-grade materials to withstand the corrosive environments of flue gas and high humidity.
- Universal Compatibility: Fits a wide range of Lennox equipment as a direct OEM replacement part (104371-10).
- Enhanced Safety: High-sensitivity diaphragm detects even minor drops in pressure, protecting the heat exchanger and system longevity.
- Simple Integration: Standard 1/4 inch quick-connect terminals and compact mounting footprint for fast field replacement.
What are the symptoms of a failing Lennox 17U20 pressure switch?
Common signs include the furnace failing to ignite, the inducer motor running continuously without a burner flame, or diagnostic codes indicating a "pressure switch stuck open" error. This often occurs due to diaphragm fatigue or debris in the sensing tube.
Can this switch be used in high-altitude applications?
The 17U20 is specifically calibrated for an actuation set point of 1.00" W.C. Always verify your specific model's altitude rating in the manufacturer’s service manual, as high-altitude kits may require different pressure thresholds for safe operation.
Is the 17U20 adjustable for different pressure ranges?
While some generic switches allow field adjustment, this OEM-spec part is factory-set to ensure high accuracy and system safety. It is recommended to use the fixed 1.00" W.C. setting to maintain the original equipment design specifications.
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 17U20 Pressure Switch is a high-precision sensing component engineered for critical monitoring in residential and commercial HVACR systems. This OEM Lennox 104371-10 replacement part is designed to actuate at 1.00 inch W.C., providing essential safety interlocking for furnace draft inducer motors and air handling units. Built with a sensitive diaphragm and a robust SPST-N.O. contact configuration, it ensures the electrical circuit closes only when the system achieves proper static pressure, preventing hazardous conditions like backdrafting or incomplete combustion. Rated for 5 Amp resistive at 24 VAC, this switch integrates seamlessly into low-voltage control strings. Whether you are troubleshooting a pressure switch stuck open or performing a routine HVAC system maintenance call, the 17U20 pressure switch delivers the reliability required for 0.25 to 25 IWC environments. Its durable construction is specifically vetted for the demanding thermal cycles found in modern air handling units and high-efficiency furnaces.
Key Benefits- Precise Actuation: Calibrated to trigger at exactly 1.00 inch water column to ensure proper airflow before ignition.
- Industrial Durability: Constructed with high-grade materials to withstand the corrosive environments of flue gas and high humidity.
- Universal Compatibility: Fits a wide range of Lennox equipment as a direct OEM replacement part (104371-10).
- Enhanced Safety: High-sensitivity diaphragm detects even minor drops in pressure, protecting the heat exchanger and system longevity.
- Simple Integration: Standard 1/4 inch quick-connect terminals and compact mounting footprint for fast field replacement.
What are the symptoms of a failing Lennox 17U20 pressure switch?
Common signs include the furnace failing to ignite, the inducer motor running continuously without a burner flame, or diagnostic codes indicating a "pressure switch stuck open" error. This often occurs due to diaphragm fatigue or debris in the sensing tube.
Can this switch be used in high-altitude applications?
The 17U20 is specifically calibrated for an actuation set point of 1.00" W.C. Always verify your specific model's altitude rating in the manufacturer’s service manual, as high-altitude kits may require different pressure thresholds for safe operation.
Is the 17U20 adjustable for different pressure ranges?
While some generic switches allow field adjustment, this OEM-spec part is factory-set to ensure high accuracy and system safety. It is recommended to use the fixed 1.00" W.C. setting to maintain the original equipment design specifications.
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.
