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!

Essential Water & Air Water Filters ®

Essential Water & Air Water Filters ®

Water Factory by 3M Purification © And Essential Water And Air © Reverse Osmosis Systems OEM Original Replacement Water Filters And RO Membranes

Water Factory SQC 1 HF by 3M Purification

Water Factory SQC 2 HF by 3M Purification

Water Factory SQC 3 HF / SQC 3 HF by 3M Purification

Water Factory SQC 4 HF / SQC 4 HF by 3M Purification

Water Factory SQC Pro by 3M Purification

Water Factory SQC Pro C-80 by 3M Purification

 

  1. 3M RO301 3 Stage Reverse Osmosis System
    3M RO301 3 Stage Reverse Osmosis System

    3MRO301 Reverse Osmosis System #04-04506 This Reverse Osmosis (RO) system with advanced three stage filtration process includes a Sediment/Carbon Pre Filter, a Carbon Block Filtration Post Filter, and a Reverse Osmosis. Included in the package: RO system with 3 filter cartridges, faucet, tank, tubing, fittings, installation manual and performance data sheet

    Learn More
    $489.00 Special Price $399.99 As low as $379.00
  2. 3MROP316 SQC Carbon Filter for 3MRO301 Reverse Osmosis System and CUNO Water Factory SQC3 HF RO System
    3MROP316 SQC Carbon Filter for 3MRO301 Reverse Osmosis System and CUNO Water Factory SQC3 HF RO System
    3MROP316 SQC Carbon Filter for 3MRO301 Reverse Osmosis System and CUNO Water Factory SQC3 HF RO System The 3M Aqua-Pure 3MROP316 under sink reverse osmosis filter is a replacement filter cartridge for the 3M Aqua-Pure 3MRO301 under sink reverse osmosis system. Reverse Osmosis Post Carbon Block Filter Filter for 3MRO301 Helps provide cleaner and better tasting water Learn More
    $53.86 Special Price $39.95 As low as $34.99
  3. 3MROP411 Supersedes Water Factory 47-9288G2 and 47-55702G2 SQC Sediment Pre Filter.
    3MROP411 Supersedes Water Factory 47-9288G2 and 47-55702G2 SQC Sediment Pre Filter.
    Reduces: Particulate, chlorine taste and odor and lead Sanitary Quick Change (SQC) cartridge design helps provide fast and easy cartridge change-out Slim profile, space saving design reduces overall under cabinet footprint Advanced multi-stage reverse osmosis water filtration process helps provide cleaner, better tasting drinking water through a dedicated faucet Learn More
    $39.99 Special Price $26.95 As low as $23.95
  4. 3M 3MROP412 Replacement Carbon Filter Supersedes CUNO Water Factory 47-9289G2 and 47-55704G2 SQC
    3M 3MROP412 Replacement Carbon Filter Supersedes CUNO Water Factory 47-9289G2 and 47-55704G2 SQC
    Reduces chlorine taste and odor Sanitary Quick Change (SQC) cartridge design helps provide fast & easy cartridge change-out with minimal effort Slim profile, space saving design reduces overall under cabinet footprint Advanced multi-stage reverse osmosis water filtration process helps provide cleaner, better tasting drinking water through a dedicated faucet Learn More
    $51.35 Special Price $39.95 As low as $34.99
  5. 3MROP416 Supersedes Water Factory 47-9295G2 , 47-55707G2 and 47-55707CM SQC Carbon Filter
    3MROP416 Supersedes Water Factory 47-9295G2 , 47-55707G2 and 47-55707CM SQC Carbon Filter
    Reduces particulate, chlorine taste and odor Sanitary Quick Change (SQC) cartridge design helps provide fast and easy cartridge change-out with minimal effort Slim profile, space saving design reduces overall under cabinet footprint Advanced multi-stage reverse osmosis water filtration process helps provide cleaner, better tasting drinking water through a dedicated faucet Learn More
    $52.19 Special Price $39.99 As low as $35.99
  6. 3MRO401 4 Stage Reverse Osmosis System
    3MRO401 4 Stage Reverse Osmosis System
    The 3MRO401 replaces the SQC4 to help provide cleaner, better tasting water through reverse osmosis The 3M reverse osmosis filtration system helps provide cleaner, better tasting water through reverse osmosis filtration. It offers multi-stage filtration, incorporating separate sediment and chlorine taste; odor filters for excellent membrane module protection, a sanitary, encapsulated reverse osmosis membrane and carbon block post-filter for superior flow from a dedicated faucet. Learn More
    $983.46 Special Price $549.95 As low as $499.00
  7. 3M RO501 Reverse Osmosis System With Pump
    3M RO501 Reverse Osmosis System With Pump
    3M RO 501 Reverse Osmosis System Our 3MRO501 systems install under the kitchen sink and deliver cleaner, clearer, better tasting drinking water through a dedicated drinking water faucet. These systems provide water filtration on demand for drinking water, coffee, tea, baby formula, etc. and for cooking purposes as well. Our universal system design allows for use on both chlorinated (municipal) and non-chlorinated (well water) systems. Learn More
    $2,265.14 Special Price $998.00 As low as $959.00
  8. WATER FACTORY - 47-55702G2  SQC - Replacement Sediment Water Prefilter by 3M Purification - 2000
    Water Factory ® 47-55702G2 / 47-9288G2 SQC Sediment Water Prefilter by 3M Purification Superseded By 3MROP411
    3MROP411 Replaces Water Factory ® 47-55702G2 / 47-9288G2 SQC Sediment Prefilter by 3M Purification. 5 Micron Graded Density Sediment Water Prefilter for Optimal Dirt Holding Capacity. Graded Density for Long Life. For use as a prefilter in SQC1, SQC2 and as the first prefilter in SQC PRO and SQC PRO C-80. IF YOU ORDER THE 47-55702G2/47-9288G2 YOU WILL RECEIVE THE 3MROP411. Learn More
    $39.99 Special Price $28.42 As low as $23.99
  9. Water Factory ® 47-55704G2 / 47-9289G2 SQC Carbon Filter by 3M Purification Superseded By 3MROP412
    Water Factory ® 47-55704G2 / 47-9289G2 SQC Carbon Filter by 3M Purification Superseded By 3MROP412
    3MROP412 Replaces Water Factory ® 47-55704G2 / 47-9289G2 SQC Carbon Filter by 3M Purification. Full length granular activated carbon filter. High absorption granular activated carbon for chlorine and organic reduction. High capacity granular activated carbon for long life even in high chlorine areas. For use as a prefilter in SQC 40T, SQC 4, SQC PRO and SQC PRO C-80 (two required) and as the postfilter in SQC 40T and SQC 30T. IF YOU ORDER THE 47-55704G2/47-9289G2 YOU WILL RECEIVE THE 3MROP412. Learn More
    $43.99 Special Price $41.35 As low as $38.35
  10. Water Factory ® 47-55706G2 SQC Sediment / Carbon Prefilter by 3M Purification Superseded By 47-9290G2
    Water Factory ® 47-55706G2 SQC Sediment / Carbon Prefilter by 3M Purification Superseded By 47-9290G2
    Water Factory ® 47-9290G2 Supersedes 47-55706G2 SQC Sediment / Carbon Prefilter by 3M Purification. Dual action prefilter designed for chlorinated water supplies. Combines our dirt & rust cartridge. 5 Micron Graded Density Sediment Prefilter for Optimal Dirt Holding Capacity. Graded Density for Long Life. High capacity granular activated carbon for long life even in high chlorine areas. For use as the prefilter in SQC3 and SQC 30T. IF YOU ORDER THE 47-55706G2 YOU WILL RECEIVE THE 47-9290G2. Learn More
    $39.99 Special Price $29.99 As low as $25.99
  11. Water Factory ® 47-55710G2 SQC Carbon Filter by 3M Purification Superseded By 47-9298G2
    Water Factory ® 47-55710G2 SQC Carbon Filter by 3M Purification Superseded By 47-9298G2
    Water Factory ® 47-9298G2 Supersedes 47-55710G2 SQC Carbon Filter. Carbon block postfilter by 3M Purification. High absorption activated carbon block for final "polish" of drinking water. Provides high flow stream of drinking water through unique "radial flow" cartridge design. For use as postfilter for SQC 1 HF, SQC 2 HF, SQC 3 HF, SQC 3 HF, SQC 4 HF, SQC 4 and SQC PRO. IF YOU ORDER THE 47-55710G2 YOU WILL RECEIVE THE 47-9298G2. Learn More
    $54.99 Special Price $43.99 As low as $39.99
  12. Water Factory ® 66-4706G2 SQC Reverse Osmosis Membrane by 3M Purification Superseded By 3MROM413
    Water Factory ® 66-4706G2 SQC Reverse Osmosis Membrane by 3M Purification Superseded By 3MROM413
    3MROM413 Replaces Water Factory ® 66-4706G2 SQC Reverse Osmosis Membrane by 3M Purification. Replaces the 66-4703G2 discontinued membrane. The most critical component to the reverse osmosis system function, the RO membrane module provides the means of separating fresh, clean drinking water from everyday tap water. This membrane is made of a thin film composite material (TFC) and is for use on chlorinated or unchlorinated water supplies. Effectively reduces: Total dissolved solids Lead Cysts (Crytosporidia and Giardia) Barium and Radium Selenium For use with SQC 2 HF, SQC 3 HF, SQC 4 HF and SQC PRO. IF YOU ORDER THE 66-4706G2 YOU WILL RECEIVE THE 3MROM413 Learn More
    $199.99 Special Price $159.99 As low as $139.99
  13. Water Factory ® 47-55700G2-S3 by 3M Purification - Bulk Filter Pack For SQC 3
    Water Factory ® 47-55700G2-S3 by 3M Purification - Bulk Filter Pack For SQC 3
    Water Factory ® 47-55700G2-S3 by 3M Purification - Bulk Filter Pack For SQC 3. Save over 25% by stocking up with this 2 year supply of filters. Includes (6) 47-55706G2 Sediment/Carbon Prefilters and (6) 47-55710G2 Block Carbon Postfilter. (Does not include the RO Membrane) Learn More
    $429.99 Special Price $324.99 As low as $299.99
  14. Water Factory ® 47-55700G2-S4 by 3M Purification - Bulk Filter Pack For SQC 4 & SQC Pro Superseded By 47-9293G2-S4
    Water Factory ® 47-55700G2-S4 by 3M Purification - Bulk Filter Pack For SQC 4 & SQC Pro Superseded By 47-9293G2-S4
    Water Factory ® 47-9293G2-S4 Supersedes 47-55700G2-S4 by 3M Purification - Bulk Filter Pack For SQC 4 & SQC Pro. Save over 25% by stocking up with this 2 year supply of filters. Includes (4) 47-55702G2 Sediment Prefilters, (4) 47-55704G2 Granular Carbon Filters and (4) 47-55710G2 Block Carbon Filters (Does not include the RO Membrane). IF YOU ORDER THE 47-55700G2-S4 YOU WILL RECEIVE THE 47-9293G2-S4. Learn More
    $389.99 Special Price $307.28
  15. Water Factory ® 47-55708CM CoolerMate © Carbon Block Filter by 3M Purification
    Water Factory ® 47-55708CM CoolerMate © Carbon Block Filter by 3M Purification
    Water Factory ® 47-55708CM CoolerMate © Carbon Block Filter by 3M Purification has been replaced by the 47-55708G2. If you order the 47-55708CM you will receive the 47-55708G2. Carbon block filter cartridge. High absorption activated carbon block for high capacity chlorine reduction. Provides high flow stream of drinking water through unique "radial flow" cartridge design. For use as second cartridge in CM 2 CTO products and as postfilter in CMRO-3TFC. Learn More
    $62.99 Special Price $49.99 As low as $45.99
  16. Water Factory ® 47-55707G2 / 47-9295G2 FaucetMate © Ultrafine Carbon Block Filter by 3M Purification Superseded By 3MROP416
    Water Factory ® 47-55707G2 / 47-9295G2 FaucetMate © Ultrafine Carbon Block Filter by 3M Purification Superseded By 3MROP416
    3MROP416 Replaces Water Factory ® 47-55707G2 / 47-9295G2 FaucetMate © Ultrafine Carbon Block Filter by 3M Purification. Carbon block filter cartridge. High absorption activated carbon block specifically synthesized for reduction of volatile organic chemicals and small particles (down to 1 micron). Provides high flow stream of drinking water through unique "radial flow" cartridge design. For use as second cartridge in FM 2 Lead Plus and as third cartridge in FM 3 DWS 350 products or in CoolrMate ©. IF YOU ORDER THE 47-55707G2/47-9295G2 YOU WILL RECEIVE THE 3MROP416. Learn More
    $67.99 Special Price $52.99 As low as $47.99
  17. Water Factory ® 47-55711G2 / 47-9299G2 SQC Carbon Filter by 3M Purification Superseded By 3MROP412
    Water Factory ® 47-55711G2 / 47-9299G2 SQC Carbon Filter by 3M Purification Superseded By 3MROP412
    3MROP412 Replaces Water Factory ® 47-55711G2 / 47-9299G2 SQC Carbon Filter by 3M Purification. Full length granular activated carbon filter. High absorption granular activated carbon for chlorine and organic reduction. High capacity granular activated carbon for long life even in high chlorine areas. Please note that the 3M replacement filter no longer has lead reduction. IF YOU ORDER THE 47-55711G2/47-9299G2 YOU WILL RECEIVE THE 3MROP412. Learn More
    $43.99 Special Price $41.35 As low as $38.35
  18. Water Factory ® 47-5574704 FaucetMate © Carbon Block FM DWS 1500 Filter by 3M Purification
    Water Factory ® 47-5574704 FaucetMate © Carbon Block FM DWS 1500 Filter by 3M Purification
    Water Factory ® 47-5574704 FaucetMate © Carbon Block FM DWS 1500 Filter by 3M Purification. Fibrous carbon block filter cartridge. High absorption activated carbon block with fibrous, graded-density structure. Reduces lead from drinking water supplies. Also effective as a cyst reducing cartridge. Provides high flow stream of drinking water through unique "radial flow" cartridge design. High capacity activated carbon block. 1500 gallons of life. Rated for cyst, lead, chlorine, taste and odor and particulate reduction. Learn More
    $99.99 Special Price $77.99 As low as $67.99
  19. Water Factory ® SQC-3 HF Reverse Osmosis System 04-045 by 3M Purification - Free Shipping *
    Water Factory ® SQC-3 HF Reverse Osmosis System 04-045 by 3M Purification - Free Shipping *
    Water Factory ® SQC-3 HF Reverse Osmosis System Includes Tank 04-045 by 3M Purification. The Water Factory System's SQC 3 HF under-the-counter reverse osmosis unit is a three (3) stage system designed for use on either chlorinated or non-chlorinated water supplies. The sanitary quick-change cartridges enable easy changes with no mess. The SQC 3 HF Model can produce up to 20 gallons of drinking water a day and can be installed to feed an ice-maker within your refrigerator. The minimum water pressure requirement of the SQC 3 HF Models is 50 psi. Uses (#1) 47-55706G2 Sediment/Carbon Prefilter, (#2) 66-4706G2 TFC HF Reverse Osmosis Membrane and (#3) 47-55710G2 Block Carbon Postfilter. Learn More
    $559.99 Special Price $469.99 As low as $439.99
  20. Pro Products Sani System Water Filtration System Sanitizer
    Pro Products Sani System Water Filtration System Sanitizer
    Sani-System ® Pro Products is proud to introduce Sani-System, the first and only EPA product approved for sanitizing water softeners, RO units and Water Coolers. Alos NSF certified. Sani System is proven to kill 99.9% of E. coli, E. coli O157:H7, Staphylococcus aureus, Listeria monocytogenes and other harmful bacteria. It does not use chlorine, other oxidizers or acids that can harm water softener equipment parts. Use is simple; each dose comes in a pre-measured pouch. Just cut, pour and regenerate softener. No measuring, No mess! Sanitizing Equipment! Applications Interior Surfaces of Water Softeners, Reverse Osmosis (RO) Units, Ice Machines, Water Coolers, Water Holding Tanks and Pressure Tanks. Pro Products Sani System Sanitizer. 0.25 fl. oz. concentrate is perfect for your RO reverse osmosis drinking water system sanitizing.. Learn More
    $7.99 Special Price $4.99 As low as $2.49
  21. Molykote-From DOw Corning- 111 Compound-6 Gram O-ring Silicone Lubricant & Sealant-Dow-111-5-gram-1000
    Dow Corning (Molykote) ® 111 6 gram O-ring Silicone Lubricant and Sealant - Be sure to lube your O-rings to help prevent leaks.
    Dow Corning/Molykote ® 111 6 gram O-ring Silicone Lubricant and Sealant - 6 gram pillow pack. (like a ketchup packet) Great O-ring sealant and lubricant. FDA and NSF approved. (Do Not Use Petroleum Jelly As It May Break Down O-rings Or Housings) This is the same premium grade silicone sealant and lubricant used in underwater photography cameras, scuba gear and other underwater applications that simply can't afford leaks. Why not use the best for your reverse osmosis or drinking water filtration system?

    Dow 111 Silicone MSDS Safety Sheet

    Learn More
    $5.99 Special Price $3.99 As low as $1.79
  22. 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
  23. 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
  24. 3M  6-in-1 Water Test Kit -Simple to Use - DIY In Home Water Quality Test Kit
    3M 6-in-1 Water Test Kit -Simple to Use - DIY In Home Water Quality Test Kit
    6 in 1 Home Water Test Kit by 3M. Use this 3M DIY water quality test for convenient on-site testing. The 3M DIY water quality test kit provides quick analysis. Learn More
    $15.75 Special Price $12.99

Easy TDS Membrane Performance 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 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.

See our selection of TDS meters under Water Tests


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.





 

* Essential Air and Water is the registered trademark of Essential Air and Water, the manufacturer of Essential Air and Water brand drinking water system filtration equipment.  The replacement water filters and reverse osmosis membranes listed above are not manufactured or endorsed by Essential Air and Water.  Rather, these replacement filters and RO membranes are manufactured by other companies.  While these filters and membranes are compatible for use in Essential Air and Water reverse osmosis water filtration equipment, we make no representation as to whether using these water filters and RO reverse osmosis membranes is consistent with the warranty and specifications applicable to Essential Air and Water under counter drinking water system equipment.