Lennox 14A48 Pressure Switch
The Lennox 14A48 Pressure Switch is a high-performance OEM replacement part engineered for two-stage gas furnaces and HVAC systems requiring precise differential pressure monitoring. This dual-stage pressure switch features a factory-calibrated low set point of 0.50" W.C. and a high set point of 0.85" W.C., ensuring the inducer motor maintains proper static pressure for safe combustion cycles. Built with a robust diaphragm and an SPST-N.O. (Normally Open) contact configuration, it provides reliable switching at a 5 Amp resistive rating at 24 VAC.
For technicians servicing Lennox EL296V or EL296E series units, this switch is a critical safety component that prevents ignition if venting or combustion air issues are detected. The 104549-06 model is designed for direct integration, reducing troubleshooting time when diagnosing pressure switch stuck open or closed errors. By utilizing a genuine Lennox furnace pressure switch, contractors ensure the system operates within manufacturer-specified parameters, protecting the heat exchanger and optimizing burner efficiency across both heating stages.
Key Benefits
- Precise Dual Calibration: Pre-set at 0.50/.85 W.C. to accurately manage low and high-fire furnace operations.
- Direct OEM Compatibility: Replaces factory part 104549-06 without the need for mounting modifications or additional brackets.
- Enhanced Safety: Monitors inducer draft and flue restrictions to prevent hazardous operating conditions.
- Contractor-Grade Durability: Constructed with high-quality materials to withstand the thermal cycling found in residential furnace cabinets.
Common Questions
What does a 14A48 pressure switch error code mean?
Usually, a code indicating a "Pressure Switch Stuck Open" or "Stuck Closed" means the diaphragm isn't responding to the inducer motor's draft or the switch itself has failed. Verify the vacuum tubing is clear and the flue is not obstructed before replacing.
Can I use this switch on a single-stage furnace?
No. This is a 2-stage pressure switch specifically calibrated with two different set points for systems with variable-speed or two-speed inducer motors. Using it on an incompatible system will cause sequencing failures.
How do I test the Lennox 104549-06?
Use a manometer to verify the inducer is pulling at least the rated 0.50"/0.85" W.C. and a multimeter to check for continuity across the NO contacts once the appropriate vacuum is applied.
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: $58.08
-65%$58.08
$20.33Lennox 14A48 Pressure Switch
The Lennox 14A48 Pressure Switch is a high-performance OEM replacement part engineered for two-stage gas furnaces and HVAC systems requiring precise differential pressure monitoring. This dual-stage pressure switch features a factory-calibrated low set point of 0.50" W.C. and a high set point of 0.85" W.C., ensuring the inducer motor maintains proper static pressure for safe combustion cycles. Built with a robust diaphragm and an SPST-N.O. (Normally Open) contact configuration, it provides reliable switching at a 5 Amp resistive rating at 24 VAC.
For technicians servicing Lennox EL296V or EL296E series units, this switch is a critical safety component that prevents ignition if venting or combustion air issues are detected. The 104549-06 model is designed for direct integration, reducing troubleshooting time when diagnosing pressure switch stuck open or closed errors. By utilizing a genuine Lennox furnace pressure switch, contractors ensure the system operates within manufacturer-specified parameters, protecting the heat exchanger and optimizing burner efficiency across both heating stages.
Key Benefits
- Precise Dual Calibration: Pre-set at 0.50/.85 W.C. to accurately manage low and high-fire furnace operations.
- Direct OEM Compatibility: Replaces factory part 104549-06 without the need for mounting modifications or additional brackets.
- Enhanced Safety: Monitors inducer draft and flue restrictions to prevent hazardous operating conditions.
- Contractor-Grade Durability: Constructed with high-quality materials to withstand the thermal cycling found in residential furnace cabinets.
Common Questions
What does a 14A48 pressure switch error code mean?
Usually, a code indicating a "Pressure Switch Stuck Open" or "Stuck Closed" means the diaphragm isn't responding to the inducer motor's draft or the switch itself has failed. Verify the vacuum tubing is clear and the flue is not obstructed before replacing.
Can I use this switch on a single-stage furnace?
No. This is a 2-stage pressure switch specifically calibrated with two different set points for systems with variable-speed or two-speed inducer motors. Using it on an incompatible system will cause sequencing failures.
How do I test the Lennox 104549-06?
Use a manometer to verify the inducer is pulling at least the rated 0.50"/0.85" W.C. and a multimeter to check for continuity across the NO contacts once the appropriate vacuum is applied.
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.
Product Information
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Description
The Lennox 14A48 Pressure Switch is a high-performance OEM replacement part engineered for two-stage gas furnaces and HVAC systems requiring precise differential pressure monitoring. This dual-stage pressure switch features a factory-calibrated low set point of 0.50" W.C. and a high set point of 0.85" W.C., ensuring the inducer motor maintains proper static pressure for safe combustion cycles. Built with a robust diaphragm and an SPST-N.O. (Normally Open) contact configuration, it provides reliable switching at a 5 Amp resistive rating at 24 VAC.
For technicians servicing Lennox EL296V or EL296E series units, this switch is a critical safety component that prevents ignition if venting or combustion air issues are detected. The 104549-06 model is designed for direct integration, reducing troubleshooting time when diagnosing pressure switch stuck open or closed errors. By utilizing a genuine Lennox furnace pressure switch, contractors ensure the system operates within manufacturer-specified parameters, protecting the heat exchanger and optimizing burner efficiency across both heating stages.
Key Benefits
- Precise Dual Calibration: Pre-set at 0.50/.85 W.C. to accurately manage low and high-fire furnace operations.
- Direct OEM Compatibility: Replaces factory part 104549-06 without the need for mounting modifications or additional brackets.
- Enhanced Safety: Monitors inducer draft and flue restrictions to prevent hazardous operating conditions.
- Contractor-Grade Durability: Constructed with high-quality materials to withstand the thermal cycling found in residential furnace cabinets.
Common Questions
What does a 14A48 pressure switch error code mean?
Usually, a code indicating a "Pressure Switch Stuck Open" or "Stuck Closed" means the diaphragm isn't responding to the inducer motor's draft or the switch itself has failed. Verify the vacuum tubing is clear and the flue is not obstructed before replacing.
Can I use this switch on a single-stage furnace?
No. This is a 2-stage pressure switch specifically calibrated with two different set points for systems with variable-speed or two-speed inducer motors. Using it on an incompatible system will cause sequencing failures.
How do I test the Lennox 104549-06?
Use a manometer to verify the inducer is pulling at least the rated 0.50"/0.85" W.C. and a multimeter to check for continuity across the NO contacts once the appropriate vacuum is applied.
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.
