Four-stage Reverse Osmosis Water Filter

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ITEM# 11367646
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ITEM#: 11367646

  • Clear your water with this handy Reverse Osmosis water filter
  • Complete 4-stage system is easy to install and maintain
  • High-capacity water filtration device can be installed in your current plumbing
  • 25 gallon per day RO membrane
  • Like having a bottled water plant in your own home
  • System comes equipped with everything needed to install in to your current plumbing
  • Includes long reach faucet to ensure continued high quality drinking water
  • Reduces chlorine taste and odor, sediment, arsenic, lead, perchlorate, cysts, cryptosporidium, giardia, entamoeba, TDS, turbidity and more
  • Ensures the health and safety of your drinking water
  • System is NSF Certified and comes backed by the Watts 130 years of industry experience and quality

According to Federal Law Magnuson-Moss Warranty Act (P.L. 93-637) All Appliance manufacturers must be given the opportunity to attempt to repair any of their appliances before it can be returned or exchanged. For more information please click here.


Material Plastic
Assembly Assembled, Assembly Required
Size Other
Dimensions 5.5 in. H x 13 in. W x 16 in. L
Model Number RO-TFM-4SV
Country of Origin United States

Customer Reviews

5 Stars
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1 Stars
  • Most Recent

  • water filter
    Verified Purchase

    I loved it...until I found out the company closed, no one knows what filters go in it or where to buy them. So it went in the trash. I bought a *** .

    Read More
  • Monica
    Verified Purchase

    Love this so much, I've had it for 4 or 5 years now. I don't find it to make much noise at all. The actual water faucet is a bit cheaply made and I want to replace it but never have and it works fine. Just have to hold it to fill vessels.

    Read More
  • Big Mess
    Verified Purchase

    I have had two professionals try to hook this up after my attempt failed. Their attempts failed as well. I have never beena ble to get it to work without leaking once it builds up pressure. The instructions are inaccurate to start with and you cant hook it up the way it says to or any other way that it actually works it seems like so it is just taking up room and a hole in my wallet!

    Read More
  • Still processing
    Verified Purchase

    the installation went smoothly, the product seems solid and it fit under the sink. Overall I am pleased but the verdict is still out, hence a two star review. After set up the unit must be filled and drained 3 times before use. Upon turning on the water a hissing noise began to emit from the back up drain hole on the RO faucet. 5 hours later it is still hissing. I have drained the unit once and am filling it again. Stay tuned for more excitement and a full review...

    Read More
  • Consider physical SIZE of filtration device
    Verified Purchase

    This filtration devise was just TOO LARGE to fit in the cabinet space I had under my sink!!! There was no information in the item description about the size of space needed for this to install and fit properly under cabinet. Is that a common bit of information that everyone (but me) knows? I had to send it back.On a positive note, Overstock's return process was pretty fluid and efficient. I was able to initiate the return online, print off a UPS shipping label from my computer at home, have the return shipping amount deducted from my credit and drop it off at a UPS store. That part was easy.In the end, it was an E$$PEN$IVE way to learn about water filtration devices. Would have been much easier if Overstock noted details like the amount of cubic feet required for installation!!!

    Read More
  • Most Helpful

  • Great water finally

    We moved in to a new area where the water tasted horrible. We were looking in to picking up a filtration unit, and decided on an RO system. After looking at a number of units, and investigating certified systems at NSF International, I found this unit to be the best value for the price.The system was relatively easy to install right out of the box. The hardest part was installing the faucet of the reverse osmosis unit. Outside of that, it was pretty easy to do the rest. All in all it took about an hour to complete. We have had it running for a few weeks now and it has been great. We have actually been using the RO water for the pets and the plants around the house.Great buy - recomended.

    Read More
  • 4 stage RO
    Verified Purchase

    This is a real good deal. I checked on replacement filters cost before buying. They are not expensive like the unit we have in our home. Got this for weekend lake cabin. Tired of expensive pitcher filters! Only problem ours came with wrong instructions but we figured it out without them. We have septic tank so put drain through wall to drain in flower bed to keep extra water out of septic tank. No more waiting for water to filter in pitcher! Love it!

    Read More
  • not a good quality
    Verified Purchase

    As I have said we purchased it on Oct 2009 installed it on 12-2009 now it is malfunctioning is frustrating ...Iyesterday it gave us 1 lliter of water to drink

    Read More
  • Easy to install
    Verified Purchase

    If you don't have one already, you'll need to buy a knockout punch to cut the hole in the sink. Installation only took a couple of hours. I would back these guys in a knife fight anytime.

    Read More
  • Noisy
    Verified Purchase

    This system makes the water taste real good but it's really noisy! Can't recommend it.

    Read More

Questions & Answers

  • Q:

    "does it have TFC or CTA?"

    • A:

      The Four-stage Reverse Osmosis Water Filter does not have TFC or CTA. Thanks for shopping with us.

  • Q:

    "i need a manuel"

    • A:

      Hello, I am having customer service contact you by email.

  • Q:

    "does this system remove flouride?"

    • A:

      No, it does not.

  • Q:

    "how do I install under the sink"

    • A:

      Installation directions are included with the product.

  • Q:

    "Where can you buy filters and how much are they? Need one which will filter out arsenic."

    • A: has a great variety of filters and depending on your needs. The prices will vary.

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Shipping & Returns

Contact Information
Shipping Information:

Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
Standard shipping details
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Standard Return Policy:

Items must be returned in new or unused condition and contain all original materials included with the shipment. More Details

FINAL SALE EXCLUSION: Items marked as FINAL SALE are not returnable unless the problem you experience is the result of our error.

For your protection, all orders are screened for security purposes. If your order is selected for review, our Loss Prevention Team may contact you by phone or email. There may be a two business day delay to process your order.

** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.