PuROTwist PT4000 TFC 50 GPD 4-Stage RO Replacement Filters

The top-selling PuROTwist PT4000 RO system is a 4 stage, point-of-use Reverse Osmosis unit that treats water at 50 gallons per day. PuROTwist Reverse Osmosis Water Filter Systems offer the highest in quality and performance standards, high-capacity output, automatic shut-off and the user-friendly Twist Tap (Omnipure Q-Series) filters. To replace the filters, simply twist the used filter off and twist the new filter on. No tools, no buckets, no mess. NOTE: We now offer replacement bundles to make the annual filter change process even easier.

Replacement Filter Info

Sediment Filter ( Q5605 ) — Replace every 6–12 months or as needed

Carbon Block Filter ( Q5621 ) — Replace every 6–12 months or as needed

RO Membrane TFC 50 GPD ( Q5672-50FC ) — Replace every 24 months or as needed

Carbon Block Filter ( Q5633 ) — Replace every 6–12 months or as needed

Helpful Filter Information

Not all filters have the same replacement schedule. Replace the RO membrane filter every two years. Replace all other filters every 6–12 months. Help keep your system sanitary by never using filters longer than 12 months, except the RO membrane filter, regardless of how much water you use.

Filter Replacement Schedule

We’ve taken the guesswork out of replacing your filters. Begin a filter replacement cycle by replacing all filters on your system ( Filter Kit “YSM” ). The following year, or sooner if recommended by the manufacturer, replace all filters except the RO membrane ( Filter Kit “YS” ). Repeat this cycle by following the helpful diagram below.