Trane SWT3220 Pressure switch
The Trane SWT3220 is an authentic OEM furnace pressure switch engineered to maintain critical safety standards within residential gas furnaces and air handlers. Calibrated at 1.29" WC (water column), this dual-terminal SPST pressure switch functions as a normally open control that proves the draft inducer motor is moving sufficient combustion air through the heat exchanger. It features a universal 1/4 barb connection for seamless pneumatic tubing attachment and is designed for direct integration into the 24V control circuit of compatible Trane and American Standard equipment.
When the inducer motor energizes, it must generate a negative pressure exceeding 1.29" WC to snap the internal diaphragm and close the circuit. If the induction system fails to reach this set point due to a blocked vent, cracked pressure switch hose, or failing motor, the switch will remain open, preventing the ignition sequence as a primary safety measure. Its rugged housing and high-quality internal contacts are built to withstand the thermal cycling and high-vibration environment of a furnace cabinet, ensuring reliable HVAC system replacement parts for service technicians.
Key Benefits for Technicians:- Precise 1.29" WC Calibration: Factory-set to ensure the inducer develops the exact static pressure required for safe combustion.
- OEM Compatibility: Serving as a direct replacement for Trane furnace parts, it eliminates the need for field modifications or generic bracket adjustments.
- Standard 1/4" Barb: Features a robust intake port compatible with standard 1/4-inch ID pneumatic tubing.
- SPST Logic: Provides straightforward on/off electrical actuation for the low-voltage safety loop.
- Why is my Trane furnace throwing a pressure switch error? This is often caused by a restricted flue vent, a clogged condensate drain in high-efficiency units, or a ruptured internal diaphragm in the Trane SWT3220.
- Can I use a switch with a different water column rating? No. Using a switch with a different WC rating can lead to dangerous operation or nuisance lockouts, as the rating is specific to the inducer's CFM and the heat exchanger's design.
- How do I test the SWT3220? Disconnect the leads and use a manometer to verify the inducer is pulling at least 1.29" WC while monitoring continuity across the terminals with a multimeter.
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: $97.40
-65%$97.40
$34.09Trane SWT3220 Pressure switch
The Trane SWT3220 is an authentic OEM furnace pressure switch engineered to maintain critical safety standards within residential gas furnaces and air handlers. Calibrated at 1.29" WC (water column), this dual-terminal SPST pressure switch functions as a normally open control that proves the draft inducer motor is moving sufficient combustion air through the heat exchanger. It features a universal 1/4 barb connection for seamless pneumatic tubing attachment and is designed for direct integration into the 24V control circuit of compatible Trane and American Standard equipment.
When the inducer motor energizes, it must generate a negative pressure exceeding 1.29" WC to snap the internal diaphragm and close the circuit. If the induction system fails to reach this set point due to a blocked vent, cracked pressure switch hose, or failing motor, the switch will remain open, preventing the ignition sequence as a primary safety measure. Its rugged housing and high-quality internal contacts are built to withstand the thermal cycling and high-vibration environment of a furnace cabinet, ensuring reliable HVAC system replacement parts for service technicians.
Key Benefits for Technicians:- Precise 1.29" WC Calibration: Factory-set to ensure the inducer develops the exact static pressure required for safe combustion.
- OEM Compatibility: Serving as a direct replacement for Trane furnace parts, it eliminates the need for field modifications or generic bracket adjustments.
- Standard 1/4" Barb: Features a robust intake port compatible with standard 1/4-inch ID pneumatic tubing.
- SPST Logic: Provides straightforward on/off electrical actuation for the low-voltage safety loop.
- Why is my Trane furnace throwing a pressure switch error? This is often caused by a restricted flue vent, a clogged condensate drain in high-efficiency units, or a ruptured internal diaphragm in the Trane SWT3220.
- Can I use a switch with a different water column rating? No. Using a switch with a different WC rating can lead to dangerous operation or nuisance lockouts, as the rating is specific to the inducer's CFM and the heat exchanger's design.
- How do I test the SWT3220? Disconnect the leads and use a manometer to verify the inducer is pulling at least 1.29" WC while monitoring continuity across the terminals with a multimeter.
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 Trane SWT3220 is an authentic OEM furnace pressure switch engineered to maintain critical safety standards within residential gas furnaces and air handlers. Calibrated at 1.29" WC (water column), this dual-terminal SPST pressure switch functions as a normally open control that proves the draft inducer motor is moving sufficient combustion air through the heat exchanger. It features a universal 1/4 barb connection for seamless pneumatic tubing attachment and is designed for direct integration into the 24V control circuit of compatible Trane and American Standard equipment.
When the inducer motor energizes, it must generate a negative pressure exceeding 1.29" WC to snap the internal diaphragm and close the circuit. If the induction system fails to reach this set point due to a blocked vent, cracked pressure switch hose, or failing motor, the switch will remain open, preventing the ignition sequence as a primary safety measure. Its rugged housing and high-quality internal contacts are built to withstand the thermal cycling and high-vibration environment of a furnace cabinet, ensuring reliable HVAC system replacement parts for service technicians.
Key Benefits for Technicians:- Precise 1.29" WC Calibration: Factory-set to ensure the inducer develops the exact static pressure required for safe combustion.
- OEM Compatibility: Serving as a direct replacement for Trane furnace parts, it eliminates the need for field modifications or generic bracket adjustments.
- Standard 1/4" Barb: Features a robust intake port compatible with standard 1/4-inch ID pneumatic tubing.
- SPST Logic: Provides straightforward on/off electrical actuation for the low-voltage safety loop.
- Why is my Trane furnace throwing a pressure switch error? This is often caused by a restricted flue vent, a clogged condensate drain in high-efficiency units, or a ruptured internal diaphragm in the Trane SWT3220.
- Can I use a switch with a different water column rating? No. Using a switch with a different WC rating can lead to dangerous operation or nuisance lockouts, as the rating is specific to the inducer's CFM and the heat exchanger's design.
- How do I test the SWT3220? Disconnect the leads and use a manometer to verify the inducer is pulling at least 1.29" WC while monitoring continuity across the terminals with a multimeter.
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.
