
Lennox 10W35 Pressure Switch
The Lennox 10W35 Pressure Switch is a mission-critical OEM safety component designed for high-pressure monitoring in Lennox HVAC systems. Engineered as a 590 PSI high pressure cut-out switch, this manual reset pressure switch (M/R) acts as a hard stop to protect the compressor and refrigerant circuit from catastrophic over-pressure conditions. Operating on a 24V SPST circuit, it features 1/2-inch NPT HVAC pressure switch fittings and 25-inch yellow lead wires for a direct-fit, drop-in replacement that requires no field modifications.
For service technicians, the Lennox 10W35 provides precise refrigerant pressure control across a variety of air conditioning and refrigeration platforms. Its robust construction ensures the HVAC safety switch remains accurate under extreme thermal cycles, preventing system failure while maintaining factory-spec performance. Using this genuine Lennox 10W35 part ensures full compatibility with the original control logic and wiring harnesses of the equipment.
Key Benefits for Technicians
- OEM Reliability: Guaranteed fit and function for Lennox equipment, eliminating the diagnostic uncertainty of universal aftermarket parts.
- Manual Safety Reset: Includes a manual reset button (M/R) to ensure a technician inspects the system for the root cause of high-pressure faults before resuming operation.
- Precision Calibration: Factory-set 590 PSI cut-out protects the compressor from liquid slugging or head pressure spikes.
- Simplified Installation: Features 25" yellow lead wires and standard 1/2" connections for rapid field replacement.
- System Longevity: Prevents premature wear on critical components by de-energizing the contactor during unsafe operating parameters.
Common Questions
What causes a 590 PSI high-pressure trip on this switch?
Trips are typically caused by restricted airflow over the condenser coil, a failing condenser fan motor, overcharging, or non-condensables in the system. The manual reset feature is purposely designed to stop the system until the obstruction or mechanical failure is corrected.
Can I use an automatic reset switch to replace the 10W35?
It is not recommended. The manual reset is a safety requirement for many Lennox high-pressure circuits to prevent the compressor from short-cycling under dangerous conditions, which could lead to motor burnout.
Does this switch support R-410A systems?
Yes, the 590 PSI rating is specifically designed for the higher operating pressures found in R-410A residential and commercial cooling equipment.
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 10W35 Pressure Switch
The Lennox 10W35 Pressure Switch is a mission-critical OEM safety component designed for high-pressure monitoring in Lennox HVAC systems. Engineered as a 590 PSI high pressure cut-out switch, this manual reset pressure switch (M/R) acts as a hard stop to protect the compressor and refrigerant circuit from catastrophic over-pressure conditions. Operating on a 24V SPST circuit, it features 1/2-inch NPT HVAC pressure switch fittings and 25-inch yellow lead wires for a direct-fit, drop-in replacement that requires no field modifications.
For service technicians, the Lennox 10W35 provides precise refrigerant pressure control across a variety of air conditioning and refrigeration platforms. Its robust construction ensures the HVAC safety switch remains accurate under extreme thermal cycles, preventing system failure while maintaining factory-spec performance. Using this genuine Lennox 10W35 part ensures full compatibility with the original control logic and wiring harnesses of the equipment.
Key Benefits for Technicians
- OEM Reliability: Guaranteed fit and function for Lennox equipment, eliminating the diagnostic uncertainty of universal aftermarket parts.
- Manual Safety Reset: Includes a manual reset button (M/R) to ensure a technician inspects the system for the root cause of high-pressure faults before resuming operation.
- Precision Calibration: Factory-set 590 PSI cut-out protects the compressor from liquid slugging or head pressure spikes.
- Simplified Installation: Features 25" yellow lead wires and standard 1/2" connections for rapid field replacement.
- System Longevity: Prevents premature wear on critical components by de-energizing the contactor during unsafe operating parameters.
Common Questions
What causes a 590 PSI high-pressure trip on this switch?
Trips are typically caused by restricted airflow over the condenser coil, a failing condenser fan motor, overcharging, or non-condensables in the system. The manual reset feature is purposely designed to stop the system until the obstruction or mechanical failure is corrected.
Can I use an automatic reset switch to replace the 10W35?
It is not recommended. The manual reset is a safety requirement for many Lennox high-pressure circuits to prevent the compressor from short-cycling under dangerous conditions, which could lead to motor burnout.
Does this switch support R-410A systems?
Yes, the 590 PSI rating is specifically designed for the higher operating pressures found in R-410A residential and commercial cooling equipment.
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.
Product Information
Product Information
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Description
The Lennox 10W35 Pressure Switch is a mission-critical OEM safety component designed for high-pressure monitoring in Lennox HVAC systems. Engineered as a 590 PSI high pressure cut-out switch, this manual reset pressure switch (M/R) acts as a hard stop to protect the compressor and refrigerant circuit from catastrophic over-pressure conditions. Operating on a 24V SPST circuit, it features 1/2-inch NPT HVAC pressure switch fittings and 25-inch yellow lead wires for a direct-fit, drop-in replacement that requires no field modifications.
For service technicians, the Lennox 10W35 provides precise refrigerant pressure control across a variety of air conditioning and refrigeration platforms. Its robust construction ensures the HVAC safety switch remains accurate under extreme thermal cycles, preventing system failure while maintaining factory-spec performance. Using this genuine Lennox 10W35 part ensures full compatibility with the original control logic and wiring harnesses of the equipment.
Key Benefits for Technicians
- OEM Reliability: Guaranteed fit and function for Lennox equipment, eliminating the diagnostic uncertainty of universal aftermarket parts.
- Manual Safety Reset: Includes a manual reset button (M/R) to ensure a technician inspects the system for the root cause of high-pressure faults before resuming operation.
- Precision Calibration: Factory-set 590 PSI cut-out protects the compressor from liquid slugging or head pressure spikes.
- Simplified Installation: Features 25" yellow lead wires and standard 1/2" connections for rapid field replacement.
- System Longevity: Prevents premature wear on critical components by de-energizing the contactor during unsafe operating parameters.
Common Questions
What causes a 590 PSI high-pressure trip on this switch?
Trips are typically caused by restricted airflow over the condenser coil, a failing condenser fan motor, overcharging, or non-condensables in the system. The manual reset feature is purposely designed to stop the system until the obstruction or mechanical failure is corrected.
Can I use an automatic reset switch to replace the 10W35?
It is not recommended. The manual reset is a safety requirement for many Lennox high-pressure circuits to prevent the compressor from short-cycling under dangerous conditions, which could lead to motor burnout.
Does this switch support R-410A systems?
Yes, the 590 PSI rating is specifically designed for the higher operating pressures found in R-410A residential and commercial cooling equipment.
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.












