Pneumatic controls in an air conditioning system operate on what type of air?

Pneumatic controls in an air conditioning system operate on low-pressure air. This is because pneumatic systems utilize the movement of air under low pressure to actuate control devices such as valves, dampers, and other components. Low-pressure air is sufficient for triggering these actions without requiring the high energy levels associated with high-pressure systems, making them more efficient and more manageable in typical HVAC applications.

The choice of low-pressure air is significant because it allows for safer operation and reduces the risk of leaks or failures that might occur with high-pressure systems. Additionally, low-pressure pneumatic controls can respond effectively to the variations in the air conditioning system, ensuring precise control over the system's operation for optimal performance and comfort.