What is the typical available static pressure in most residential furnaces and air handlers with a PSC motor?

The typical available static pressure in most residential furnaces and air handlers equipped with a permanent split capacitor (PSC) motor is 0.5 inches of water column (WC). This value is a standard reference point in the industry, as PSC motors are commonly used in residential HVAC systems due to their efficiency and ability to provide adequate airflow while maintaining manageable levels of static pressure.

In systems with a PSC motor, 0.5 inches WC strikes a balance between sufficient airflow and system pressure restrictions, enabling the unit to operate effectively without causing undue stress on the motor or components. It’s important to note that other methods or configurations may produce different pressure readings, which is why understanding the typical values is crucial for installation and service professionals. The provided context about static pressure helps maintain comfort, efficiency, and system reliability in residential applications.