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this flange is specific to Aaon equipment geometry
this 1/2 HP
Streamlined Installation: Compact design and standard terminals facilitate a fast HVAC pressure switch replacement
Most OEM collector boxes come with factory-installed port seals
ensuring perfect alignment with existing blower motors
Reznor 270389 Pressure Switch R-22 this flange is specific toThe Reznor 270389 Pressure Switch is a critical safety component calibrated to a . 33" WC set point, specifically engineered for Reznor unit heaters. This differential air pressure switch monitors the pressure drop across the heat exchanger, ensuring the induced draft blower is operating at the correct static pressure before allowing the ignition sequence to proceed. As a genuine OEM Reznor replacement part, it maintains the precise factory