Manometer

The manometer allows users to easily tell when filter replacement is necessary.  The manometer reads in water inches as a measure of static pressure. 

This comes standard on all AF-3000E and AF-4500E models and is an option on the AF-2000E.  Changing filters as required, is important to reduce costs related to unnecessary filter changes. 

Just because a filter looks dirty, doesn’t mean it needs to be changed.