Aaon Differential Pressure Switch WC

The Aaon differential pressure switch (also called an air pressure switch or DPS) is a genuine OEM control for Aaon commercial HVAC equipment, including rooftop units and air handlers. It senses the difference in air pressure between two points and opens or closes an electrical circuit when the pressure reaches its set point, measured in inches of water column (WC).

Key Features:

• Genuine Aaon OEM replacement part for compatibility with Aaon equipment
• Senses low differential air pressure to prove airflow, monitor filter loading, or confirm fan operation
• Can serve as a safety interlock that interrupts the circuit when airflow or draft is not confirmed, for example with a blocked flue or a failed inducer
• Available in a range of WC pressure ratings, with fixed-setpoint and adjustable-range versions in the line
• Compact, durable construction for demanding commercial environments

Using the correct OEM pressure switch helps keep the unit's original control sequence, protects the equipment, and supports reliable, safe operation. Select the child item with the WC rating that matches your application.