
Reznor 204325 Pressure Switch
Ensure reliable combustion safety with the Reznor 204325 Pressure Switch, a critical OEM component designed for high-performance venting verification in Reznor gas-fired unit heaters. This SPDT pressure switch is factory-calibrated at a 0.8 in. WC set point, providing a precise electrical signal to the control board only when the induced draft motor establishes safe airflow. Built to handle the rigorous duty cycles of industrial and commercial heating applications, this mechanical safety control prevents ignition under hazardous backdrafting or restricted flue conditions, protecting both the heat exchanger and the facility.
This replacement switch is compatible with a wide range of Reznor models, including the RP, RPB, RPBL, SC, SCE, and SSCBL series. For technicians servicing older hardware, note that the Reznor 204325 features updated 1/4-inch and 3/16-inch quick-connect terminals to meet current ANSI/CSA safety standards. Whether you are troubleshooting a unit that won’t fire or addressing frequent short cycling, this genuine Reznor replacement part ensures the system operates within exact factory tolerances for draft pressure and electrical continuity.
Key Benefits for the Contractor- Universal Series Compatibility: Fits various Reznor commercial unit heaters, including SC, RPB, and SSCBL models.
- Precision Calibration: Pre-set to 0.8" WC to ensure the burner only ignites when proper combustion air pressure is confirmed.
- Safety Logic Integration: The SPDT (Single-Pole Double-Throw) design allows for accurate monitoring of the normally-open and normally-closed states during the startup sequence.
- OEM Reliability: Direct Reznor 204325 replacement ensures seamless integration with the existing inducer motor and harness.
- Why is my furnace inducer running but not igniting? This often indicates the pressure switch is stuck open or not reaching its 0.8" WC threshold due to a blocked vent, cracked pressure tubing, or a failing inducer motor.
- How do I test the Reznor 204325? Use a manometer to verify the draft pressure meets the 0.8" WC requirement and a multimeter to check for electrical continuity across the terminals once the set point is reached.
- Does the terminal size matter? Yes; this switch uses specific quick-connect sizes. If replacing a legacy switch with different terminal widths, you may need to crimp the included terminals for a secure connection.
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: $81.64
-65%$81.64
$28.57Reznor 204325 Pressure Switch
Ensure reliable combustion safety with the Reznor 204325 Pressure Switch, a critical OEM component designed for high-performance venting verification in Reznor gas-fired unit heaters. This SPDT pressure switch is factory-calibrated at a 0.8 in. WC set point, providing a precise electrical signal to the control board only when the induced draft motor establishes safe airflow. Built to handle the rigorous duty cycles of industrial and commercial heating applications, this mechanical safety control prevents ignition under hazardous backdrafting or restricted flue conditions, protecting both the heat exchanger and the facility.
This replacement switch is compatible with a wide range of Reznor models, including the RP, RPB, RPBL, SC, SCE, and SSCBL series. For technicians servicing older hardware, note that the Reznor 204325 features updated 1/4-inch and 3/16-inch quick-connect terminals to meet current ANSI/CSA safety standards. Whether you are troubleshooting a unit that won’t fire or addressing frequent short cycling, this genuine Reznor replacement part ensures the system operates within exact factory tolerances for draft pressure and electrical continuity.
Key Benefits for the Contractor- Universal Series Compatibility: Fits various Reznor commercial unit heaters, including SC, RPB, and SSCBL models.
- Precision Calibration: Pre-set to 0.8" WC to ensure the burner only ignites when proper combustion air pressure is confirmed.
- Safety Logic Integration: The SPDT (Single-Pole Double-Throw) design allows for accurate monitoring of the normally-open and normally-closed states during the startup sequence.
- OEM Reliability: Direct Reznor 204325 replacement ensures seamless integration with the existing inducer motor and harness.
- Why is my furnace inducer running but not igniting? This often indicates the pressure switch is stuck open or not reaching its 0.8" WC threshold due to a blocked vent, cracked pressure tubing, or a failing inducer motor.
- How do I test the Reznor 204325? Use a manometer to verify the draft pressure meets the 0.8" WC requirement and a multimeter to check for electrical continuity across the terminals once the set point is reached.
- Does the terminal size matter? Yes; this switch uses specific quick-connect sizes. If replacing a legacy switch with different terminal widths, you may need to crimp the included terminals for a secure connection.
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.
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Description
Ensure reliable combustion safety with the Reznor 204325 Pressure Switch, a critical OEM component designed for high-performance venting verification in Reznor gas-fired unit heaters. This SPDT pressure switch is factory-calibrated at a 0.8 in. WC set point, providing a precise electrical signal to the control board only when the induced draft motor establishes safe airflow. Built to handle the rigorous duty cycles of industrial and commercial heating applications, this mechanical safety control prevents ignition under hazardous backdrafting or restricted flue conditions, protecting both the heat exchanger and the facility.
This replacement switch is compatible with a wide range of Reznor models, including the RP, RPB, RPBL, SC, SCE, and SSCBL series. For technicians servicing older hardware, note that the Reznor 204325 features updated 1/4-inch and 3/16-inch quick-connect terminals to meet current ANSI/CSA safety standards. Whether you are troubleshooting a unit that won’t fire or addressing frequent short cycling, this genuine Reznor replacement part ensures the system operates within exact factory tolerances for draft pressure and electrical continuity.
Key Benefits for the Contractor- Universal Series Compatibility: Fits various Reznor commercial unit heaters, including SC, RPB, and SSCBL models.
- Precision Calibration: Pre-set to 0.8" WC to ensure the burner only ignites when proper combustion air pressure is confirmed.
- Safety Logic Integration: The SPDT (Single-Pole Double-Throw) design allows for accurate monitoring of the normally-open and normally-closed states during the startup sequence.
- OEM Reliability: Direct Reznor 204325 replacement ensures seamless integration with the existing inducer motor and harness.
- Why is my furnace inducer running but not igniting? This often indicates the pressure switch is stuck open or not reaching its 0.8" WC threshold due to a blocked vent, cracked pressure tubing, or a failing inducer motor.
- How do I test the Reznor 204325? Use a manometer to verify the draft pressure meets the 0.8" WC requirement and a multimeter to check for electrical continuity across the terminals once the set point is reached.
- Does the terminal size matter? Yes; this switch uses specific quick-connect sizes. If replacing a legacy switch with different terminal widths, you may need to crimp the included terminals for a secure connection.
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.












