Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

LOW PRICES and FAST SHIPPING SINCE 1999 !

99.5% Of All Items In Stock For Same Day Shipping!

Page
  1. Omnifilter-T08
    Omnifilter-T08 Radial Flow Carbon Replacement Water Filter
    Omnifilter-T08 Radial Flow Carbon Filter - Compatible with Pentek RFC-BB # 155141 / 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. RFC 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 cartridges are ideal for point-of-entry and other high flow rate applications. Learn More
  2. Omnifilter OB1 Water Filter Housing
    Omnifilter OB1 Water Filter Housing

    OB1 OMNIFilter Standard housings feature integral mounting bracket and clear housing. OB1 integral mounting bracket caps and housings are manufactured from durable polypropylene for dependable long life. Equipped with 3/4" NPT inlet and outlet ports are available in Standard 10" lengths and will accommodate a wide range of 2-1/4" to 3-1/8" diameter cartridges

     

    Learn More
    $36.99
  3. Omnifilter RS6-20 Pleated 30 Micron 20" Heavy Duty Sediment Cartridge
    Omnifilter RS6-20 Pleated 30 Micron 20" Heavy Duty Sediment Cartridge
    • Reduces sediment
    • Contains more than 16 square feet of filtration surface area
    • Pairs best with BF6, BF7, BF9C, BF35, BF36C, BF55
    Learn More
    $45.25 Special Price $29.95
  4. Omnifilter TO3 10" 10 Micron Non-cellulose Paper Carbon Sediment Water Filter
    Omnifilter TO3 10" 10 Micron Non-cellulose Paper Carbon Sediment Water Filter

    10" standard carbon filter cartridge, 5 gpm flow rate, 15,000 gallon capacity, Substance Reduction Claims - Chlorine Taste & Odor, Rust Particles, Taste & Odor, Sediment

    Learn More
    $19.10 Special Price $13.99
  5. Omnifilter-RV1 Large Diameter Inline Carbon/Sediment RV Filter with 12' Hose
    Omnifilter-RV1 Large Diameter Inline Carbon/Sediment RV Filter with 12' Hose

    The RV1 water filter is an outdoor water filter for use in motor homes, campers, boats and gardens. It reduces chlorine taste & odor, and sediment including sand and dirt. The RV1 can connect to the water supply using any typical garden hose

    Learn More
    $67.20 Special Price $44.95
  6. Omnifilter U25-S-S18  Standard 10" Water Filter Housing System
    Omnifilter U25-S-S18 Standard 10" Water Filter Housing System

    Omnifilter U25-S-S18 Standard 10" Water Filter Housing System.

    Clear housing whole house 10" water filter system with bypass valve.  3/4" inlet/outlet ports.  Omnifilter TO1 Filter cartridge, mounting bracket and wrench included.  

    Learn More
    $114.00 Special Price $79.95
  7. OMNIFILTER GAC1 ® Replacement GAC Water Filter Cartridge
    OMNIFILTER GAC1 ® Replacement GAC Water Filter Cartridge
    OMNIFILTER GAC1 ® Replacement GAC Water Filter Series C. Granular Activated Carbon for Sediment/Rust Particles, Taste/Odor, Chlorine Reduction. Included in SFM2 Series A Undersink Water Filter - 2000 Gallons/20 Microns - 6 per case, priced and sold individually. GAC1-SS. Order a full case and save even more. Learn More
    $13.99 Special Price $8.99 As low as $7.99
  8. OMNIFILTER CB1 ® Replacement Water Filter Cartridge
    OMNIFILTER CB1 ® Replacement Water Filter Cartridge
    OMNIFILTER CB1 ® Series C Replacement Water Filter Cartridge. Replacement carbon block water filter cartridge for the OMNIFILTER CBF1, U700 and others. Order a full case and save even more. Micron rating 0.5* Flow Rate 1 gpm Filter capacity 1,000 gallons Reduces Sediment & Rust Particles*, Effectively reduces Asbestos, Chlorine, Taste & Odor, Cysts. 6 per case, priced and sold individually. Order a full case and save even more. IMPORTANT: DOES NOT FIT OLDER STYLE ORIGINAL AND SERIES A HOUSINGS. IF YOU HAVE AN OLDER STYLE HOUSING WE RECOMMEND THE KX PB1. Learn More
    $29.99 Special Price $19.99 As low as $16.99
  9. OMNIFILTER CB3 Replacement Water Filter
    OMNIFILTER CB3 Replacement Water Filter
    OMNIFILTER CB3 ® Series C Replacement Water Filter Cartridge. Formerly TC3. Fits OMNI Undersink filters CBF3 and OT32, among others. 0.5 micron carbon block. Sediment, Rust, Chlorine, Lead and Mercury (harmful minerals), Cryptosporidium, Giardia Cysts, Volatile Organic Chemicals. IMPORTANT: DOES NOT FIT OLDER STYLE ORIGINAL AND SERIES A HOUSINGS. IF YOU HAVE AN OLDER STYLE HOUSING WE RECOMMEND THE KX PB1. Learn More
    $39.99 Special Price $29.99 As low as $26.99
  10. OMNIFILTER RS1 ® Sediment Replacement Water Filter
    OMNIFILTER RS1 ® Sediment Replacement Water Filter
    OMNIFILTER RS1 ® Sediment Water Filter 20 Micron. Flow Rate 5 gpm Filter capacity 15,000 gallons. Coarse sediment filtration - reduces sand, sediment and rust particles. Fits Omnifilter whole house models. 24 per case. Priced and sold individually. Order a full case and save even more. Learn More
    $8.99 Special Price $5.99 As low as $4.69
  11. OMNIFILTER RS2 Sediment Filter-1000
    OMNIFILTER RS2 Replacement Sediment Water Filter (Twin Pack)

    OMNIFILTER RS2 ® Whole House 5 Micron String Wound Replacement Water Filter (Twin Pack). Fine sediment filtration - reduces dirt, sand and rust particles. Durable string wound construction. 5 Micron. Flow Rate 5 gpm. Order a full case and save even more.

    Learn More
    $12.58 Special Price $9.95 As low as $7.49
  12. OMNIFILTER RS3 ® Whole House 20 Micron String Wound Water Filter
    OMNIFILTER RS3 ® Whole House 20 Micron String Wound Water Filter
    OMNIFILTER RS3 ® Whole House 20 Micron String Wound Water Filter. Flow Rate 5 gpm. 24 per case. Priced and sold individually. Order a full case of 24 and save even more. Learn More
    $8.99 Special Price $5.99 As low as $4.69
  13. OMNIFILTER RS14 Sediment Water Filter 10 Micron Polyspun
    OMNIFILTER RS14 Sediment Water Filter 10 Micron Polyspun 2 Pack
    OMNIFILTER RS14 Sediment Water Filter 2 Pack. The OmniFilter RS14-DS contains two RS14 Poly Spun Whole House Filters, which reduce dirt, sand, sediment and rust particles from your water. The OmniFilter RS14 sediment filters are used in Omni Filter whole house models, OT32 Series A Undersink Filter System and any other whole house filter system that calls for a standard size 10 micron Poly Spun filter. Includes two Omni Filter RS-14 filter cartridges. The OmniFilter RS14-DS Poly Spun Whole House Filter Product Specifications: •Micron Rating: 10 •Flow Rate: 5 gallons per minute •Filter Life: 10,000 gallons •Filter Size: standard 9.75 x 2.5 inch This product was known previously as model number RS14-DS3-01 and is now known by model number RS14-DS3-05. It is also known by part number 155014-126. Contains two RS14 filters. Learn More
    $8.99 Special Price $6.99 As low as $5.79
  14. OMNIFILTER TO1 ® Taste / Odor 5 Micron Replacement Water Filter
    OMNIFILTER TO1 ® Taste / Odor 5 Micron Replacement Water Filter
    OMNIFILTER TO1 ® Taste / Odor Water Filter - 5 Micron chlorine taste/odor reduction - Fine sediment filter - reduces sand and rust particles. Fits Omnifilter whole house models. Order a full case and save even more. Learn More
    $9.99 Special Price $6.99 As low as $5.49
  15. OMNIFILTER RS16 Sediment Whole House Heavy Duty Filter
    OMNIFILTER RS16 Sediment Whole House Heavy Duty Filter
    OMNIFILTER RS16 Sediment Whole House Heavy Duty Filters - Polyspun - 1 Micron. Reduces sediment, dirt, sand and rust particles.10 GPM (gallons per minute) - Change every 30,000 gallons or 6 months, whichever comes first. Learn More
    $27.99 Special Price $15.99 As low as $11.99
  16. OMNIFILTER RS15 Whole House 5 Micron Sediment Water Prefilter
    OMNIFILTER RS15 Whole House 5 Micron Sediment Prefilter
    OMNIFILTER RS15 Whole House 5 Micron Sediment Prefilter. Same as the Pentek ECP5-BB # 255490 Replaces #155184 CP5BB Big Blue Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. Big Blue 5 Micron Pleated Cellulose-Polyester Sediment Water Filter. 10" long X 4 1/2" diameter. 8 per case, sold individually. Ametek #155184 Culligan CP-5BBS same as ECP5-BB (255490) and OMNIFILTER RS15. RS15 Series cartridges are manufactured from a special formulation of resin-impregnated cellulose and polyester fibers. This construction provides high flow rates and dirt-holding capacities, while maintaining extremely low pressure drops. The media is pleated around a polypropylene core for added strength and the ends are immersed in a thermo-setting vinyl plastisol. Embedding and sealing each end of the pleat block in this fashion fuses the components together forming a unitized end cap and gasket. Order a case and save even more. Learn More
    $24.99 Special Price $13.99 As low as $9.99
  17. OMNIFILTER RS6 ® Whole House 30 Micron Heavy-Duty Pleated Water Filter
    OMNIFILTER RS6 ® Whole House 30 Micron Heavy-Duty Pleated Water Filter
    OMNIFILTER RS6 ® Whole House 30 Micron Heavy-Duty Pleated Water Filter. Pleated paper construction. 30 Micron - Flow Rate 10 gpm. Filter capacity 30,000 gallons. Fits Omnifilter BF7 Whole House model. Buy two and save even more. Learn More
    $23.99 Special Price $14.99 As low as $12.99
  18. OMNIFILTER TO6 ® Whole House Heavy-Duty 1 Micron Replacement Water Filter
    OMNIFILTER TO6 ® Whole House Heavy-Duty 5 Micron Replacement Water Filter
    OMNIFILTER TO6 ® Whole House Heavy-Duty 5 Micron Replacement Water Filter. Higher capacity for larger homes. Pleated paper construction with carbon-wrapped inner core. Fits Omnifilter BF7 Whole House model. Flow Rate 5 gpm. Reduces Sediment & Rust Particles, Chlorine, Taste & Odor. Buy two and save even more. Learn More
    $32.99 Special Price $20.99 As low as $18.99
  19. OMNIFILTER CB6 ® Whole House Carbon Block Water Filter
    OMNIFILTER CB6 ® Whole House Carbon Block Water Filter
    OMNIFILTER CB6 ® Whole House Carbon Block Water Filter. 1 Micron. Flow Rate 5 gpm. Reduces Sediment & Rust Particles - Reduces Chlorine Taste & Odor - 97.59% - Removes Cysts - 99.99%. Fits Omnifilter BF7 Whole House model. Higher capacity for larger homes. Buy two and save even more. Learn More
    $89.99 Special Price $75.99 As low as $69.99
  20. OmniFilter R200 Refrigerator Icemaker Water Filter
    OmniFilter R200 Refrigerator Icemaker Replacement Water Filter
    The OmniFilter R200 Refrigerator and Icemaker Water Filter provides great tasting ice cubes and water through your refrigerator. The Omni Filter R200 is easy to install using quick connect fittings for use on 1/4 inch plastic tubing or copper pipe. This filter is also used on Omni RO2000 and RO2000-TDS water systems. This water filter reduces sediment, rust as well as reducing Chlorine. The OmniFilter R200 Series B Refrigerator Icemaker Water Filter is rated for •Micron Rating - 15 •Flow Rate - 0.5 Gallons per minute •Filter Life - 3,900 Gallons or 1 year •Dimensions - 1.5" x 10" This OmniFilter R200 Refrigerator Icemaker Water Filter meets NSF / ANSI standard 42 for the reduction of •Chlorine This product was known previously as model numbers R200-A-01 & R200-A-03 and is now known by model number R200-S6-05. Learn More
    $24.99 Special Price $13.99 As low as $11.99
  21. OMNIFILTER FRC1-D ® Faucet Mount Filter Cartridge
    OMNIFILTER FRC1-D ® Faucet Mount Filter Cartridge
    OMNIFILTER FRC1-D ® Faucet Mount Filter Cartridge. Replacement filter cartridge for OMNIFILTER F1 faucet mount filter system. 200 gallons or 3 month cartridge life. Features two replacement cartridges per FRC1 pack. Learn More
    $17.99 Special Price $10.99 As low as $8.99
  22. OMNIFILTER 1100R Quick Change Water Filter Cartridge
    OMNIFILTER 1100R Quick Change Filter Cartridge
    OMNIFILTER 1100R Quick Change Filter Cartridge. Fits OmniFilter R1100 and CBF2 System, and Culligan SY-1000 and IC-1000 systems. Reduces sediment, chlorine, odor, lead, cysts, lindane, atrazine and improves taste. Learn More
  23. OMNIFILTER K4 ® O-rings
    OMNIFILTER K4 Replacement Water Filter Housing O-rings - Set
    OMNIFILTER K4 ® O-rings - Price per set of 4. Fits Under Sink Models CBF1, OT32,CBF3, SFM2,CBF20, RO2000, OB3 And Whole House Models OB1, OB5, R12, R14. Be sure to order Dow 111 Silicone Sealant to Prevent Leaks. The OmniFilter K4 Replacement O-rings pack contains the following four o-rings: •1 Blue K4: fits OB3, SFM2 Series A, CBF1, CBF3 Series A, OT32 Series A, RO2000, R14, CBF20 and OB1. •1 Black WC9-13: fits white-head OB5 and OCT2. •1 Black OK40: fits OB1 Series A, OB5 Series A, R12 Series A and U25 Series E. •1 Black OK30: fits CBF1 Series A, CBF3 Series B, OT32 Series B, SFM2 Series B, RO2000 Series B Learn More
    $13.99 Special Price $9.95 As low as $7.99
  24. OMNIFILTER OK25 ® Replacement O-Ring for U25 Series A and U26
    OMNIFILTER OK25 ® Replacement O-Ring for U25 Series A and U26 Water Filter Housings

    OMNIFILTER OK25 ® Replacement O-Ring for U25 Series A and U26 Water Filter Housings.   Be sure to order Dow 111 silicone sealant to help prevent leaks.

    Learn More
    $8.99 Special Price $5.99 As low as $4.69
  25. GOES GREEN- 88 Shower Soft Water Filter- 1000
    Goes Green Shower Soft Water Filter
    Goes Green Shower Soft Water Filter - Top Of The Line Shower Filter. Uses 300 grams of pure KDF. Easy to install. Superior performance over carbon for chlorine removal in showers. Prevents bacterial growth. Good for one year or 30,000 gallons, which ever comes first. Help's enhance hair's pH balance, softens hair and skin. Helps preserve hair color. CHLORINE is an inorganic substance that chemically bonds to the protein in your hair and skin, destroying its natural ecological balance. Chlorine can leave your hair dry and brittle and make your skin flaky and itchy. As much as 50% of the chlorine taken into the body comes from skin absorption and inhalation. The other 50% is drinking water. KDF is far superior at removing chlorine than carbon in the shower. While carbon is great for drinking water filters, it is not great with hot water such as a shower. In hot water carbon can slough off some of the chemicals that it may have absorbed. That is why the package on the faucet & pitcher drinking water filters tell you to not use hot water in them. For hot water in the shower, KDF is "hands down" the best filtration media available. Installs easily between existing shower head and pipe. Shower head not included. Standard 1/2" NPT pipe thread size. Only 4 1/2" long by 2 1/2" diameter. With Convenient Replacable Cartridge. Order 2 or more and save even more! Learn More
    $49.99 Special Price $26.99 As low as $17.99
  26. TDS Meter - Test For Total Dissolved Solids In Water - Reverse Osmosis Membrane Tester - TDS Meter
    TDS Meter - Test For Total Dissolved Solids In Water - Reverse Osmosis Membrane Tester - TDS Meter
    TDS Meter - Tester. The Only Way To Know If Your Reverse Osmosis RO Membrane Is Performing Correctly - Tests for TDS - Total Dissolved Solids. A Must For All RO System Owners. Compare Incoming Feed Water To Treated Water - Replace Membrane If Less Than 80% of TDS Is Being Removed - The lower the TDS level in the water, the more efficiently your body's cells actually get hydrated by the water that you drink. The higher the TDS levels in the water, the greater the probability of harmful contaminants that can pose health risks or hinder the absorption of water molecules on the cellular level. Simple to use for Reverse Osmosis membrane monitoring. We really like this tester and think that anyone who wants to know about the quality of their water should have one of these TDS Meter Testers to monitor their RO membrane. Learn More
    $49.99 Special Price $37.99 As low as $17.99
  27. TDS Meter Inline Water Tester DM1 - HM Digital Dual Mode Reading
    TDS Meter Inline Tester- Dual Mode Reading - Easily Installs Inline - Very Simple To Use
    TDS Meter - Dual Mode - Installs Inline - Check the TDS level with the push of a button. Now you can easily check to make sure the water from your reverse osmosis system is top quality. Measure the tap water coming in vs. the purified water going out of your system at any time. Very easy installation. FEATURES Displays TDS levels of the feed water and product water with in & out electrode probes. Highly efficient and accurate due to its advanced microprocessor technology. Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use. Comes equipped with John Guest Quick-Connect T-fittings as shown. Installs quickly and easily. SPECIFICATIONS Range: 0-9990 ppm Accuracy: ±2% Always know if your RO membrane is performing correctly! Learn More
    $49.99 Special Price $39.99 As low as $19.99
Page

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.