Replacement water filters, RO reverse osmosis membranes and whole house filter systems. Refrigerator water filters, pool and spa filter. Pentek, OMNIFILTER water filters. Chiller Daddy water chillers

  1. Starting at: $5.99

    4 Stage Replacement Water Filter Kit Learn More
  2. Regular Price: $23.99

    Special Price $15.99

    As low as: $11.99
    The KX Plus 5 / VOC has been discontinued. If you order the KX Plus 5 / VOC you will receive the KX CTO +3 - 3 Micron Carbon Block Filter. 9 7/8" long X 2 1/2" diameter OD X 1 1/4" diameter ID. 25 per case, sold individually. Order a case and save even more. Learn More
  3. Regular Price: $44.99

    Special Price $34.99

    As low as: $29.99
    Pentek RFC-BB # 155141 RFCBB Radial Flow Big Blue Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. Radial Flow Big Blue Carbon 25 Micron Water Filter. 10" long X 4 1/2" diameter. 8 per case, sold individually. Ametek # 155141. Same as Culligan RFC-BBS. RFC Series cartridges are constructed with a porous polypropylene outer shell and durable polypropylene end caps. Sandwiched between the outer shell and the core is a bed of granular activated carbon. The unique radial flow design offers the benefit of granular activated carbon filtration, such as low pressure drop, while at the same time eliminating the release of carbon fines commonly associated with GAC style cartridges. RFC Series cartridges are ideal for point-of-entry and other high flow rate applications. Order a case and save even more. Learn More
  4. Regular Price: $44.99

    Special Price $32.99

    As low as: $30.99
    EcoWater ® Compatible ERO-392 Water Prefilter - Ref# 7148964 Prefilter allows membrane to sit inside of filter cartridge. Ref. # 7148964Learn More
  5. Regular Price: $69.99

    Special Price $44.99

    As low as: $35.99
    Desal ® TFM-18 GE Osmonics - 18 GPD (gallons per day) TFC Style reverse osmosis membrane - Fits Standard Size Membrane Housing. # 1220188 Learn More
  6. Regular Price: $8.99

    Special Price $5.99

    As low as: $3.99
    Pentek P-5 # 155014 P5 Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. Spun Polypropylene 5 Micron Sediment Water Filter. 9 7/8" long X 2 1/2" diameter. 24 per case, sold individually. Ametek # 155014 P-Series cartridges are manufactured from 100% pure polypropylene fibers. The fibers have been carefully spun together to form a true gradient density from outer to inner surfaces. These cartridges are designed for purity. They will not impart taste, odor or color to the liquid being filtered when used within the recommended temperature limit. Also, the polypropylene construction provides superior chemical resistance and is not prone to bacterial attack. The coreless strength of the cartridges is achieved by sintering the many fibers into a solid matrix. Order a case and save even more. Learn More
  7. Regular Price: $15.99

    Special Price $11.99

    As low as: $9.99
    Pentek S1 # 155001 S-1 Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. S1 20 Micron Pleated Cellulose Sediment Water Filter. 9 3/4" long X 2 1/2" diameter. 24 per case, sold individually. Ametek # 155001 S1 series cartridges are economically priced and highly effective at reducing sediment particles down to 20 micron in size. Whole house or point of entry filtration to filter out sand, silt, dirt and rust particles that can restrict and plug finer filters, screens or equipment. Order a case and save even more. Learn More
  8. Regular Price: $9.99

    Special Price $7.99

    As low as: $5.99
    Pentek C-1 # 155002 Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner /OMNIFILTER And Many Other Brands C1 Taste & Odor Water Filter. Activated Carbon-Impregnated Cellulose 5 Micron Taste & Odor Water Filter. 9 3/4" long X 2 1/2" diameter. 24 per case, sold individually. Ametek # 155002 C Series cartridges offer an economical solution for all your general-purpose water filtration needs. Constructed of a carbon impregnated cellulose media, these dual-purpose cartridges filter out fine sediment particles and reduce unwanted taste, odor and chlorine from your tap water. A polyester reinforcement backing and external netting provide additional strength and dirt-loading capacity. These dual-purpose cartridges are well suited for a wide range of residential applications, and make excellent polishing filters when used in process or closed-loop streams. Order a case and save even more.Learn More
  9. Regular Price: $47.24

    Special Price $27.99

    As low as: $23.99
    Aqua-Pure AP717 by 3M Purification ® Icemaker Filter #55513-12. Model AP717 - aka AquaPure or Aqua Pure - Ice Maker Filter for sparkling fresh ice and water. This stand alone filter attaches to your water line that feeds the refrigerator. Triple Action Filtration 5 Micron Nominal Removes Dirt, Rust, Odor & Chlorine Protects Refrigerator from Scale Buildup Easy Cartridge Change. Sold Individually. Learn More
  10. Regular Price: $21.99

    Special Price $11.99

    As low as: $9.49
    Omnipure ® CL-10RO-T/33 GAC - 10" X 2" Carbon Inline Replacement Post Water Filter - GAC (granular activated carbon) Acid Washed Carbon - Should be changed at least every 12 months. 25 per case, sold individually. Order a case and save even more. Learn More

Easy TDS Membrane Performence Calculator
See If It is Time To Replace Your Membrane

Simply enter your Feed Water TDS and RO Water TDS into the boxes above and click "Submit". The percentage of TDS (total disolved solids) rejection will be displayed. We normally recommend membrane replacement once you drop below 75%. This may vary in areas with high TDS in the feed water.   Let the tap water and reverse osmosis water run for a few seconds before drawing your sample.

See our selection of TDS meters under Water Tests.  Knowing the rejection rate is the only wat to know if it is time to replace your reverse osmosis membrane.


Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.


* GE ® is the registered trademark of GE Systems, the manufacturer of GE ® brand water treatment equipment. The replacement filters and membranes listed above are not manufactured or endorsed by GE. Rather, these filters and membranes are manufactured by other companies. While these filters and membranes are compatible for use in GE ® brand water treatment equipment, we make no representation as to whether using these filters and membranes is consistent with the warranty and specifications applicable to GE ® equipment.