Trane SWT2973 Pressure Switch
The Trane SWT2973 Pressure Switch is an essential OEM safety component designed for precise draft monitoring in Trane and American Standard gas furnaces. Engineered for a 24V control circuit, this high-performance sensor ensures the inducer motor establishes a proper vacuum before allowing the ignition sequence to proceed. It features a critical setpoint configuration, precisely calibrated to open at -1.33" WC and close at -1.52" WC, preventing unsafe combustion conditions caused by venting blockages or mechanical inducer failure.
For a veteran technician, this switch provides a reliable direct replacement for the Trane SWT02973 and the Honeywell IS20387-5808. Its dual hose port and two-terminal electrical connection simplify field installation and ensure compatibility with a wide range of residential furnace models. By maintaining accurate airflow pressure sensing, this component protects the heat exchanger and optimizes system efficiency. When troubleshooting furnace short cycling or ignition failure, verify the pressure tubing for cracks or moisture before replacing this switch to ensure peak system performance.
Key Benefits- OEM Precision: Guaranteed compatibility with Trane HVAC systems, eliminating the risks associated with generic universal switches.
- Safety Monitoring: Prevents furnace operation during negative pressure fluctuations, protecting the system from combustion gas buildup.
- Drop-in Installation: Designed with standard terminals and mounting points for rapid replacement during emergency service calls.
- Durable Construction: Built to withstand the high-temperature and high-vibration environment of a draft inducer assembly.
- Accurate Calibration: Factory-set to -1.33" Open / -1.52" Close to meet strict manufacturer safety specifications.
How do I confirm the SWT2973 is the correct part for my furnace?
Always match the part number from your existing switch. The SWT2973 is often used in models like the ADC1, ADH1, and TDX series. Check the pressure ratings on the label; this unit is specifically rated for -1.33" WC Op and -1.52" WC Cl.
What are the symptoms of a failing pressure switch?
Common indicators include the inducer motor running without the igniter glowing, system lockout error codes (typically 2 or 3 flashes on most control boards), or the furnace shutting down shortly after a heat call begins.
Can I use this as a substitute for a switch with different pressure ratings?
No. Pressure switches are calibrated to the specific venting and blower and motor requirements of the furnace. Installing a switch with incorrect inches of water column settings can lead to unsafe operation or frequent nuisance tripping.
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: $81.59
-65%$81.59
$28.56Trane SWT2973 Pressure Switch
The Trane SWT2973 Pressure Switch is an essential OEM safety component designed for precise draft monitoring in Trane and American Standard gas furnaces. Engineered for a 24V control circuit, this high-performance sensor ensures the inducer motor establishes a proper vacuum before allowing the ignition sequence to proceed. It features a critical setpoint configuration, precisely calibrated to open at -1.33" WC and close at -1.52" WC, preventing unsafe combustion conditions caused by venting blockages or mechanical inducer failure.
For a veteran technician, this switch provides a reliable direct replacement for the Trane SWT02973 and the Honeywell IS20387-5808. Its dual hose port and two-terminal electrical connection simplify field installation and ensure compatibility with a wide range of residential furnace models. By maintaining accurate airflow pressure sensing, this component protects the heat exchanger and optimizes system efficiency. When troubleshooting furnace short cycling or ignition failure, verify the pressure tubing for cracks or moisture before replacing this switch to ensure peak system performance.
Key Benefits- OEM Precision: Guaranteed compatibility with Trane HVAC systems, eliminating the risks associated with generic universal switches.
- Safety Monitoring: Prevents furnace operation during negative pressure fluctuations, protecting the system from combustion gas buildup.
- Drop-in Installation: Designed with standard terminals and mounting points for rapid replacement during emergency service calls.
- Durable Construction: Built to withstand the high-temperature and high-vibration environment of a draft inducer assembly.
- Accurate Calibration: Factory-set to -1.33" Open / -1.52" Close to meet strict manufacturer safety specifications.
How do I confirm the SWT2973 is the correct part for my furnace?
Always match the part number from your existing switch. The SWT2973 is often used in models like the ADC1, ADH1, and TDX series. Check the pressure ratings on the label; this unit is specifically rated for -1.33" WC Op and -1.52" WC Cl.
What are the symptoms of a failing pressure switch?
Common indicators include the inducer motor running without the igniter glowing, system lockout error codes (typically 2 or 3 flashes on most control boards), or the furnace shutting down shortly after a heat call begins.
Can I use this as a substitute for a switch with different pressure ratings?
No. Pressure switches are calibrated to the specific venting and blower and motor requirements of the furnace. Installing a switch with incorrect inches of water column settings can lead to unsafe operation or frequent nuisance tripping.
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 SWT2973 Pressure Switch is an essential OEM safety component designed for precise draft monitoring in Trane and American Standard gas furnaces. Engineered for a 24V control circuit, this high-performance sensor ensures the inducer motor establishes a proper vacuum before allowing the ignition sequence to proceed. It features a critical setpoint configuration, precisely calibrated to open at -1.33" WC and close at -1.52" WC, preventing unsafe combustion conditions caused by venting blockages or mechanical inducer failure.
For a veteran technician, this switch provides a reliable direct replacement for the Trane SWT02973 and the Honeywell IS20387-5808. Its dual hose port and two-terminal electrical connection simplify field installation and ensure compatibility with a wide range of residential furnace models. By maintaining accurate airflow pressure sensing, this component protects the heat exchanger and optimizes system efficiency. When troubleshooting furnace short cycling or ignition failure, verify the pressure tubing for cracks or moisture before replacing this switch to ensure peak system performance.
Key Benefits- OEM Precision: Guaranteed compatibility with Trane HVAC systems, eliminating the risks associated with generic universal switches.
- Safety Monitoring: Prevents furnace operation during negative pressure fluctuations, protecting the system from combustion gas buildup.
- Drop-in Installation: Designed with standard terminals and mounting points for rapid replacement during emergency service calls.
- Durable Construction: Built to withstand the high-temperature and high-vibration environment of a draft inducer assembly.
- Accurate Calibration: Factory-set to -1.33" Open / -1.52" Close to meet strict manufacturer safety specifications.
How do I confirm the SWT2973 is the correct part for my furnace?
Always match the part number from your existing switch. The SWT2973 is often used in models like the ADC1, ADH1, and TDX series. Check the pressure ratings on the label; this unit is specifically rated for -1.33" WC Op and -1.52" WC Cl.
What are the symptoms of a failing pressure switch?
Common indicators include the inducer motor running without the igniter glowing, system lockout error codes (typically 2 or 3 flashes on most control boards), or the furnace shutting down shortly after a heat call begins.
Can I use this as a substitute for a switch with different pressure ratings?
No. Pressure switches are calibrated to the specific venting and blower and motor requirements of the furnace. Installing a switch with incorrect inches of water column settings can lead to unsafe operation or frequent nuisance tripping.
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.
