How are Filter-Driers Rated for Capacity?

Typically, filter-driers are rated per AHRI standards which require no more than a 1 psi pressure drop at its maximum flow capacity. That is the basis for how they are selected and so it should give you an idea of what is “normal”…ie, 1 psi or less. If the pressure drop exceeds that, it may be time to consider replacing it.   >>>To read this the rest of this article, you must be registered and logged in. Please return to the Home page to log in.<<<