
Trane SWT1649 Flow Switch
The Trane SWT1649 Reverse Flow Switch is a critical safety component designed for precise pressure and airflow monitoring in commercial and residential HVAC systems. Engineered as a genuine OEM replacement part, this thermal flow switch is factory-calibrated to open the electrical control circuit at 105°F (105Op) and automatically close at 95°F (95Cl). This specific temperature ranging ensures the system detects abnormal thermal conditions or restricted airflow, effectively protecting the heat exchanger and blower components from over-temperature damage.
For veteran technicians, the SWT1649 provides essential airflow direction protection in furnace and air handler applications. Its compact design and 1/4-inch quick-connect terminals allow for straightforward integration into existing control circuits. Whether you are servicing a Trane gas furnace or a high-efficiency rooftop unit, this HVAC safety switch maintains system integrity by verifying proper combustion and circulation air patterns. Its durable construction is built to withstand the rigorous demands of continuous cycling in high-stakes environments.
- Critical Safety Protection: Monitors for reverse airflow and over-temperature conditions to prevent heat exchanger failure.
- OEM Precision: Calibrated with a 105°F open and 95°F close setpoint for reliable system response.
- Broad Compatibility: Direct replacement for various Trane and American Standard HVAC models.
- Easy Installation: Features standard quick-connect terminals for fast field replacement by contractors.
What does the 105Op 95Cl rating mean?
This indicates the switch is designed to interrupt the control circuit when temperatures reach 105°F and will reset (close) once the temperature drops back to 95°F, ensuring the equipment does not operate under unsafe thermal loads.
Can the SWT1649 be used in both gas and propane systems?
Yes, this reverse flow switch is suitable for both natural gas and liquid propane (LP) systems, provided the application matches the manufacturer's specified temperature and electrical ratings.
Is this switch a direct replacement for older Trane limit switches?
The SWT1649 is an OEM part used specifically for reverse airflow detection. Always verify the part number against your unit’s wiring diagram or service facts sheet to ensure it is the correct thermal limit for your specific configuration.
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: $9.89
-65%$9.89
$3.46Trane SWT1649 Flow Switch
The Trane SWT1649 Reverse Flow Switch is a critical safety component designed for precise pressure and airflow monitoring in commercial and residential HVAC systems. Engineered as a genuine OEM replacement part, this thermal flow switch is factory-calibrated to open the electrical control circuit at 105°F (105Op) and automatically close at 95°F (95Cl). This specific temperature ranging ensures the system detects abnormal thermal conditions or restricted airflow, effectively protecting the heat exchanger and blower components from over-temperature damage.
For veteran technicians, the SWT1649 provides essential airflow direction protection in furnace and air handler applications. Its compact design and 1/4-inch quick-connect terminals allow for straightforward integration into existing control circuits. Whether you are servicing a Trane gas furnace or a high-efficiency rooftop unit, this HVAC safety switch maintains system integrity by verifying proper combustion and circulation air patterns. Its durable construction is built to withstand the rigorous demands of continuous cycling in high-stakes environments.
- Critical Safety Protection: Monitors for reverse airflow and over-temperature conditions to prevent heat exchanger failure.
- OEM Precision: Calibrated with a 105°F open and 95°F close setpoint for reliable system response.
- Broad Compatibility: Direct replacement for various Trane and American Standard HVAC models.
- Easy Installation: Features standard quick-connect terminals for fast field replacement by contractors.
What does the 105Op 95Cl rating mean?
This indicates the switch is designed to interrupt the control circuit when temperatures reach 105°F and will reset (close) once the temperature drops back to 95°F, ensuring the equipment does not operate under unsafe thermal loads.
Can the SWT1649 be used in both gas and propane systems?
Yes, this reverse flow switch is suitable for both natural gas and liquid propane (LP) systems, provided the application matches the manufacturer's specified temperature and electrical ratings.
Is this switch a direct replacement for older Trane limit switches?
The SWT1649 is an OEM part used specifically for reverse airflow detection. Always verify the part number against your unit’s wiring diagram or service facts sheet to ensure it is the correct thermal limit for your specific configuration.
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 SWT1649 Reverse Flow Switch is a critical safety component designed for precise pressure and airflow monitoring in commercial and residential HVAC systems. Engineered as a genuine OEM replacement part, this thermal flow switch is factory-calibrated to open the electrical control circuit at 105°F (105Op) and automatically close at 95°F (95Cl). This specific temperature ranging ensures the system detects abnormal thermal conditions or restricted airflow, effectively protecting the heat exchanger and blower components from over-temperature damage.
For veteran technicians, the SWT1649 provides essential airflow direction protection in furnace and air handler applications. Its compact design and 1/4-inch quick-connect terminals allow for straightforward integration into existing control circuits. Whether you are servicing a Trane gas furnace or a high-efficiency rooftop unit, this HVAC safety switch maintains system integrity by verifying proper combustion and circulation air patterns. Its durable construction is built to withstand the rigorous demands of continuous cycling in high-stakes environments.
- Critical Safety Protection: Monitors for reverse airflow and over-temperature conditions to prevent heat exchanger failure.
- OEM Precision: Calibrated with a 105°F open and 95°F close setpoint for reliable system response.
- Broad Compatibility: Direct replacement for various Trane and American Standard HVAC models.
- Easy Installation: Features standard quick-connect terminals for fast field replacement by contractors.
What does the 105Op 95Cl rating mean?
This indicates the switch is designed to interrupt the control circuit when temperatures reach 105°F and will reset (close) once the temperature drops back to 95°F, ensuring the equipment does not operate under unsafe thermal loads.
Can the SWT1649 be used in both gas and propane systems?
Yes, this reverse flow switch is suitable for both natural gas and liquid propane (LP) systems, provided the application matches the manufacturer's specified temperature and electrical ratings.
Is this switch a direct replacement for older Trane limit switches?
The SWT1649 is an OEM part used specifically for reverse airflow detection. Always verify the part number against your unit’s wiring diagram or service facts sheet to ensure it is the correct thermal limit for your specific configuration.
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.












