Aaon P59900 Differential Pressure Switch 0.25"WC

The Aaon P59900 is a differential pressure switch designed for HVAC applications requiring precise air pressure monitoring. This switch is calibrated to activate at 0.25 inches water column (WC), making it ideal for detecting pressure differentials across filters, coils, or dampers in commercial heating and cooling systems.

Key Features:

• Differential pressure setpoint: 0.25" WC for sensitive pressure detection
• Designed specifically for Aaon rooftop units and air handling equipment
• Reliable switching mechanism for filter status monitoring and system protection
• Direct replacement OEM component ensuring proper fit and function
• Durable construction for long-term performance in commercial HVAC environments

This pressure switch is commonly used to monitor filter loading conditions, triggering alarms or system responses when filters become dirty and airflow restriction increases. The 0.25" WC setpoint provides early detection to maintain system efficiency and prevent equipment damage from restricted airflow.