Ask about SF Series Multi-Functional Filter
Choose 7-Stage TDS Reducer Filter if you want a filter option designed to reduce TDS, chlorine, and heavy metals.
Choose 8-Stage Alkaline Filter if you want filtration with an added alkaline material layer designed to raise pH level.
Choose 8-Stage Fluoride Removal Filter if you want added fluoride reduction in addition to chlorine and heavy metal reduction.
Designed for Purewell SF Series filter systems and also compatible with Zero pitchers and dispensers.
Each box includes 2 filters. Filter life is listed per individual filter and may vary by water quality and usage.
Flush filters before first use and replace them when the rated capacity is reached or water flow becomes noticeably slower.
How to Install and Prime the Multi-Functional Filter
Follow these simple steps to install, pre-filter, and use the multi-functional filter correctly with compatible Purewell and ZeroWater pitcher or dispenser systems.
Install the Multi-Functional Filter
Insert the multi-functional filter into the hole from the exterior side of the upper chamber, then rotate the lid to secure the filter in place.
Prime the Filter After Installation
Fill the upper chamber with water and allow it to filter into the lower chamber. Discard the first batch of filtered water before normal use.
Important Notice
Follow these care tips to ensure proper use and avoid clogging, poor flow, or compatibility issues.
How the Filter System Works
Water is added to the upper chamber and moves through the center filter by gravity. After filtration, water collects in the lower chamber and is ready to dispense from the spigot.
Add water to the top chamber. The system works without electricity, plumbing, or pressure.
Water naturally flows downward through the center filter element, where the filtration process takes place.
After passing through the filter, water collects in the lower chamber for storage and daily use.
Open the spigot to pour filtered water for drinking, cooking, or everyday hydration.
Filter Replacement Guide
Replacing filters on time helps your filtration system keep working properly. It also helps maintain water flow, drinking water taste, and everyday use confidence.
Filter life may vary by water quality, usage frequency, and total water volume filtered.
Replace the filters when they reach the rated lifespan listed for your filter model.
If filtering takes much longer than usual, clean or replace the filters as needed.
If unwanted taste or smell becomes noticeable again, it may be time to replace the filters.
Rain, river, stream, or well water may shorten filter life compared with regular tap water.
Choose filters that match your filtration system, filter series, and setup.
Prime, rinse, or flush new filters according to the product instructions.
Make sure washers, seals, and threaded parts are installed correctly.
Empty and clean the upper and lower chambers before installing new filters.
If your system uses paired filters, replace matching filters together when needed.
Write down the replacement date and set a reminder based on your usage.
Use this checklist to choose the right replacement filter for your Purewell system and check whether it may also fit select compatible systems from other brands.
| Filter Category | Filter Type | Fits Purewell Systems | Other Compatible Systems |
|---|---|---|---|
| K Series Carbon Filters (Pro) | Core Filter | SS Series and K Series filtration systems. | Select ProOne Big+ / Big II and Berkey BB9-2 style systems. |
| K Series Carbon Filters | Core Filter | SS Series and K Series filtration systems. | Select ProOne Big+ / Big II and Berkey BB9-2 style systems. |
| K Series Carbon Filters (Classic) | Core Filter | SS Series and K Series filtration systems. | Black Berkey Elements style systems and select Berkey gravity systems. |
| K Series Ceramic Filters | Core Filter | SS Series and K Series filtration systems. | Most gravity-fed systems from major brands, including Berkey, ProOne, Alexapure, Waterdrop, Doulton, Boroux, Culligan, and more. |
| SS Series Square Carbon Filters | Core Filter | SS Series and K Series filtration systems. | Select ProOne Big+ / Big II and Berkey BB9-2 style systems. |
| SF Series Multi-Functional Filter | Core Filter | SF Series filtration systems. | Select Zero pitchers and dispensers. |
| BO Series Unique Compound Filter | Core Filter | BO Series filtration systems only. | Not intended for K Series, SS Series, or other gravity filtration systems. |
| K Series Specialty Add-On Filters | Supplemental Filter | Use together with K Series or SS Series core filters. | Select Travel, Big, Royal, Imperial, Light, and Crown Berkey models as an additional filter option. |
Multi-Functional Filter Installation Video
Watch this quick guide to install your Purewell Multi-Functional Filter correctly. Proper installation helps support stable water flow, reliable filtration performance, and easier daily use.
Multi-Functional Filter Setup
This video shows how to install the Purewell Multi-Functional Filter with a compatible filtration system. Follow the guide before first use or when replacing an old filter.
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