CuZn Whole House 20" 4.5 Diameter Prefilter Canister Casing

If you have a lot of particulate or sediment in your water, a prefilter will remove it, which can extend the life of the main whole house water filters.

While prefilters can be ordered in any micron size from 1 to 100, the recommended sizes for a whole house application are 10, 15, 20 or 25-microns. The smaller the micron the faster it can clog, so you can also install up to 3 prefilters in series, starting with the largest to the smallest micron. For instance, install a 25-micron first, followed by a 20-micron and finishing with a 10-micron. Adding even one prefilter will extend the life of all main water filters.

IMPORTANT NOTE about 1-micron Prefilters

A 1-micron prefilter has such small pores that it would need to be changed every month unless you install larger micron prefilters before it. Otherwise it can quickly clog up and diminish your water flow. Plus, if too much water pressure backs up because it is clogged, it could crack the housing. Typically, a 1-micron prefilter is only recommend to remove asbestos or other harmful small particle substances.