Before you know how a static pressure test works, you need to know why it’s important. Static pressure tests help our technicians figure the fan airflow of your system, making it a much easier endeavor to pin down duct leakage and invisible system defects.
Here’s how it works. We take two pressure readings — the air pressure entering the equipment and the air pressure leaving the equipment. Then we add the two pressures together to find the total external static pressure of the system. There are a couple dozen rules or so that guide our technicians in coming to an overall static pressure reading.
We compare this reading to the manufacturer’s fan charts, considering the fan speed, to figure out the fan airflow. And you thought calculus was tough.