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iSpring US31 3-Stage Under Sink Tankless Drinking Water Filtration System-Includes Sediment 2X CTO Carbon Block Filters (Newest Version)

  • Up to 20X more effective than the common water pitcher dispenser , Feed Water Temperature - 40-100 F
  • Universal 10 inch sediment filter and 2 x 10 inch Carbon block filters
  • Removes sediment, chlorine, and more to produce colorless, tasteless and odorless filtered water
  • Manufactured to comply strictly with FDA standards and tested by independent third party against NSF/ANSI standards (42, 53, 61).
  • Easy DIY installation. Lifetime support from iSpring in Atlanta, GA at (678) 261-7611
  • $135.99
    Qty:
        Eligible for FREE Shipping Orders Over $35 within US 48 cont. states Details    Print Share on Facebook
    • At iSpring, we look beyond technology to make filtered water accessible for all households. We provide our customers with professional water solutions to any water concerns they may have.

      drinking water filter
      Manufactured to comply strictly with FDA standards (CFR-174, 177) and tested by independent third party against NSF/ANSI standards (42, 53, 61).
    • water filtration system under sink

    Why US31

    No more paying to have water delivered, or wasting time replacing low-capacity pitcher filters and faucet filters, the US31 Under-Sink Water Filter provides up to 2000 gallons directly from your tap at a fraction of the cost.

    This 3-stage filter system features dual carbon block filters along with a PP sediment filter. The sediment filter protects and extends the life of your system, while the carbon block filters work to remove many harmful contaminants like chloramine, chlorine and more.


    Highlight Features
      • sink water filter
      • water filter
    • under sink water filter
    • water filtration system

    Product Description


    This 3-stage filter system features dual carbon block filters along with a PP sediment filter. The sediment filter protects and extends the life of your system, while the carbon block filters work to remove many harmful contaminants like chloramine, chlorine and more.
    • Availability: In Stock
    • Model: US31
    • Manufacturer: iSpring
    Matt B | 5 out of 5 Stars!
    2019-01-14

    I actually surprised myself, the filter was fairly easy to put in. Of course, I did have the advantage of having a previous filter installed, so I didn't have to put in the adapter to tap off the existing cold water line. I did add an inline shut off on the flexible plastic supply line, so I could shut off the water without crawling under the sink to make it easy to change filters later. My local hardware store had a brass inline filter with compression fittings for a very inexpensive price. On the whole, I was impressed with the installation kit. the manufacturer included a good supply of good quality water line, all the fittings needed to install, and even put in a roll of Teflon tape! One word of caution, so you don't make the same mistake I did. When you take the plastic off the filters and reinstall them into the unit, be extra careful that the o-ring stays in its groove so you get a good seal. The instructions recommend using some food grade silicone if you find it necessary. They're not kidding. I didn't get one of the O-rings straight, and when I put water to the system it leaked. It was my mistake, not the mistake of the unit. I shut the water back off and fixed the o-ring into the right position, then everything was fine. I will be getting a tube of that food-grade silicone when it is time to replace the filters. Other than that, I have absolutely no complaints with this filter. The water is clean and tastes good again - no more buying bottles of water for us!
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