6 water filters. Sediment, pre carbon GAC filter, Ultrafilter membrane, Reverse Osmosis membrane, post carbon GAC filter, Alkaline mineral carbon block filter. Used for water coolers and undersink water filtration systems.

RainTree™ Filters Replace the following Wellsys Filters

Wellsys • PS-12  → Raintree™ Sediment + Carbon

Wellsys • PC-12  → Raintree™ Pre Carbon

Wellsys • Biosure → Raintree™ Post Carbon

Wellsys • TCR-12 → Raintree™ Alkaline Mineral

  • Set of 5 water filters. Sediment + carbon block, pre carbon GAC filter, Ultrafilter Membrane, post carbon GAC filter, alkaline mineral carbon block filter. Filter set used for water coolers and undersink systems.

    Ultrafiltration (UF) Filter Sets

    From $69

    0.01 micron UF filtration

    Activated Carbon Block, GAC, Alkaline Mineral, and UF Filtration

    Removes/Reduces contaminants like chlorine, pesticides, herbicides, disinfection byproducts DBPs, pharmaceuticals, forever chemicals PFAS, microplastics, bacteria, viruses, and cysts.

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    4 Filter UF Set

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    5 Filter UF Set

  • Set of 5 water filters. Sediment + carbon block filter, pre carbon GAC filter, Reverse Osmosis Membrane, post carbon GAC filter, alkaline mineral carbon block filter. Used for water coolers and undersink water filtration systems.

    Reverse Osmosis (RO) Filter Sets

    From $89

    0.0001 micron RO filtration

    Activated Carbon Block, GAC, Alkaline Mineral, and RO Filtration

    Removes 99.999% of contaminants including chlorine, pesticides, herbicides, disinfection byproducts DBPs, forever chemicals PFAS, microplastics, bacteria, viruses, cysts, fluoride and total dissolved solids TDS.

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    4 Filter RO Set

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    5 Filter RO Set

Why Choose RainTree™ Water Filters?

1 year Lifespan

Enjoy better-tasting, cleaner water instantly

Extend the Life of your water cooler and filtration system

Alkaline Mineral Filter replenishes beneficial minerals

Free flushing kit included with replacement filter sets

Eliminate harmful contaminants

NSF Certified

  • Raintree sediment + carbon block filter for water cooler and undersink water filtration systems

    Sediment + Carbon

    New and improved, now with added carbon block! 

    Dual-stage filtration designed for superior water purification. In the first stage, it effectively captures particles such as sand, silt, rust, dust, dirt, and pipe residue.

    The second stage features a carbon block that removes chlorine, volatile organic compounds (VOCs), trihalomethanes (THMs), and other harmful substances, enhancing water quality and taste. 

    The large surface area of the carbon block slows water flow, increasing contact time with the filtration media for improved contaminant removal. Additionally, this filter helps protect and extend the lifespan of downstream filters, ensuring long-lasting performance.

  • Pre Carbon GAC water filter. Used for water coolers and undersink water filtration systems.

    Pre Carbon

    Granular Activated Carbon (GAC) filter uses a process called adsorption. Contaminants are attracted and adhere to the carbon material like velcro. This filter removes an abundance of impurities from the water, including chlorine, VOCs, THMs, and bad taste and odor. The Pre Carbon filter also protects and extends the life of the Ultrafilter or Reverse Osmosis Membrane.

  • Post Carbon GAC water filter. Used for water coolers and undersink water filtration systems.

    Post Carbon

    20x40 mesh Granular Activated Carbon (GAC) filter works as a "polishing" filter, improving taste and odor.

    In a 4-filter set, the Post Carbon filter can be used as an alternative to the Alkaline Mineral Filter.

    In a 5-filter set, the Post Carbon filter is used as the 4th filter in the series.

  • Ultrafilter membrane water filter. Used for water coolers and undersink water filtration systems.

    UF Membrane

    The Ultrafilter is a semi-permeable membrane that works by physically trapping suspended particles as small as 0.01 micron. Some of these particles include microplastics, bacteria, viruses, parasites, fungi and Protozoa to name a few. One of the benefits of UF filtration, in addition to its excellent contaminant removal, is the retention of beneficial trace minerals and fluoride in your drinking water. 

  • RO Membrane

    A semi-permeable membrane where only water molecules are able to pass through. The pores in the membrane are so small, they can trap impurities as tiny as 0.0001 micron. This includes all dissolved solids (TDS) such as salt, trace minerals, ions, fluoride and microplastics. Reverse Osmosis filtration is used when removing everything from the water is desired.

  • Alkaline Mineral Carbon block water filter. Used for water coolers and undersink water filtration systems.

    Alkaline Mineral

    The Ultrafilter is a semi-permeable membrane that works by physically trapping suspended particles as small as 0.01 micron. Some of these particles include microplastics, bacteria, viruses, parasites, fungi and Protozoa to name a few. One of the benefits of UF filtration, in addition to its excellent contaminant removal, is the retention of beneficial trace minerals and fluoride in your drinking water. 

    The Alkaline Mineral Filter is comparable to Wellsys' TCR filter.

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RainTree™ water filters

Pre Filters & Singles

Sediment Filters, GAC Filters, Carbon Block Filters, UF Membranes, RO Membranes, Alkaline Mineral Filters

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miscellaneous water filtration fittings for water coolers and undersink water filtration systems.

RainTree™

Fittings & Supplies

Miscellaneous supplies for filter changes and installations. Tubing, cutters, refrigerator connection kits, and extra fittings.

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