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iSpring US31 Classic 3-Stage Under Sink Water Filtration System for Drinking, Tankless, High Capacity, Sediment + GAC + Carbon (Newest Version)

  • Based on 1,681 reviews
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Returnable until Jan 31, 2025

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Availability: In Stock.
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Arrives Thursday, Jun 26
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Style: 3-Stage Under Sink Water Filtration System


Features

  • [Classic Drinking Filter]: The water undergoes a three-stage purification process: PP sediment filtration, GAC carbon filter and a unique CTO filtration in the 3rd layer. This system efficiently removes common drinking water sediments such as dust, sand, particles, dirt, and rust. Additionally, it effectively eliminates heavy metals, harmful chemicals, Chloramine, cloudiness, colors, chlorine taste, and odor. It's important to note that this under sink water filtration system DOES NOT lower TDS value but preserves the healthy minerals in your water. Enjoy pure, great-tasting water with essential minerals intact.
  • [Fresh Healthy Water Supplier]: The on-demand fast flow rate of the iSpring US31 allows it to meet the widest possible range of needs in your home. Up to 20x more effective than the common water pitcher dispenser. Flow Rate: Up to 1GPM depending on source water pressure. Maxim Pressure: 90psi. It washes fresh produce like fruit and vegetables, brings health protection, can provide your entire family with delicious, clean water straight from your tap.
  • [Excellent Quality and Design]: Features beautiful European-designed brushed nickel all-metal faucet and clear see-through 1st stage housing. Clear see-through 1st stage housing makes filter inspection a snap. Manufactured to comply strictly with FDA standards and tested by independent third party against NSF/ANSI standards (42, 53, 61) for water quality, material safety and structural integrity.
  • [Easy to Install and Maintain]: Designed for hassle-free installation and maintenance, the system includes a high-capacity sediment filter, GAC filter, and CTO carbon filter. The sediment filter protects and extends the life of your system, while the GAC and carbon filters efficiently remove harmful contaminants. Filters should be replaced every 6 to 12 months, depending on water quality.
  • [TDS Note and Customer Services]: This under sink water filter will not reduce the TDS of the incoming water. Instead, it keeps the healthy minerals in your water. If you are interested in a filter that removes TDS, please consider a Ispring reverse osmosis system.Backed by a 1-year Manufacturer with lifetime support from Atlanta, GA USA. For any issue or concern, please don't hesitate to contact us.

Brand: iSpring


Special Feature: Multi Stage Filtration


Product Dimensions: 13"L x 5.3"W x 14.2"H


Package Information: Cartridge


Installation Type: Under Sink


Power Source: Ac


Item Weight: 5.45 Kilograms


Model Name: US31


Maximum Flow Rate: 1 Gallons Per Minute


Upper Temperature Rating: 100 Degrees Fahrenheit


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 13 x 5.3 x 14.2 inches; 12.02 Pounds


Item model number ‏ : ‎ US31


Date First Available ‏ : ‎ March 15, 2018


Manufacturer ‏ : ‎ iSpring Water Systems


Country of Origin ‏ : ‎ China


Best Sellers Rank: #35,173 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #69 in Under-Sink & Countertop Filtration


#69 in Under-Sink & Countertop Filtration:


Customer Reviews: 4.5 4.5 out of 5 stars 1,681 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jun 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great Product and the representative SEAN - is Excellent !
Style: 3-Stage Under Sink Water Filtration System
I recently purchased the 3-layer water filter for under the sink, and I’m really impressed with its performance! The installation was straightforward, and the water quality has improved significantly since I started using it. The filter works well, providing clean, fresh-tasting water for my family. I also want to give a special thanks to Sean, the customer service representative, who was incredibly helpful when I had a few questions about the product. He took the time to answer all my concerns and made sure I was fully informed. Excellent service! Overall, I highly recommend this water filter to anyone looking to improve their water quality. It’s a reliable product with great customer support from Sean! ... show more
Reviewed in the United States on December 8, 2024 by Daurin Veledez

  • Awesome unit. I love it!
Style: 3-Stage Under Sink Water Filtration System
I bought this system to filter water for a plumbed Keurig K150P coffee maker. The one filter solution recommended by Keurig is not that good. The filter quality or capacity is nowhere near the level that iSpring offers. It takes 2 stages to get the Chlorine taste out of the water. This 3-Stage system is outstanding. The water taste great and there is zero waste like there is with an RO system. I believe this is one of the best water filtration systems on the market. The price is fair, the company has an excellent reputation, the filters are built well, and it comes with every piece and part needed to hook it up. Most systems require a few trips to Home Depot to figure out all of the parts, line sizes, etc. that is needed. This one comes with everything you need including a faucet! I personally did not use the faucet and plumbed directly to a coffee maker, but it is certainly nice that they provided one. I assume most will use this system for drinking water. It is also super easy to Tee one of the lines if you want to provide filtered water to more than one location (e.g. Ice Maker, Coffee maker). These 1/4" plastic T's work perfectly (https://www.amazon.com/gp/product/B013ZX72ZE). The company ships more than enough feed line for most normal sized kitchens. If you need more it is easy to find 1/4" plastic ice maker line. They sell it everywhere. The only thing to keep in mind is this is not a small unit. It is big. It takes up a lot of space and it needs to be screwed to a wall/cabinet. It would not be a good idea to let it stand on its own. If it fell over it could cause problems with filtration. The advantage to the size, however, is it has room to hold quality filters. It does a great job cleaning the water. Our coffee tastes as good, or better, than most commercial shops. I am very, very pleased with this purchase. I highly recommend iSpring. Their customer service is excellent as well. Email them any question you have and they respond quickly. ... show more
Reviewed in the United States on February 3, 2019 by PassionHighway

  • Outstanding WE love this
Style: 3-Stage Under Sink Water Filtration System
We bought this in August and it had a problem with the faucet and so we got in touch with the company instead of returning it. Laurence helped us and had the problem fixed within a few days. The unit is outstanding, wish we had gone for this years ago instead of the filter on the end of the faucet (Not sure if I can write the name). It took about 15 mins to install, it is really fast delivery of water compared to the old one, tastes great and has not shown any leakage. Please note, if you have a pre-drilled hole in your sink for a soap dispenser it will fit in there, but only just. (The hole is almost too big). We are happy as clams with this unit. ... show more
Reviewed in the United States on October 20, 2024 by EZ Person

  • nice quality
Style: 3-Stage Under Sink Water Filtration System
easy install and works great. this is my 3rd house to install one and it's such a great system for the money. i've had no issues w/ leaks. filters are also easy to replace. my only question is why do they give you 50' of tubing... seems like a lot of waste
Reviewed in the United States on October 3, 2024 by mark

  • Customer Service
Style: 3-Stage Under Sink Water Filtration System
Install was very easy, water tastes great. My faucet started leaking internally after a year of daily use, so I called the service line and they sent a replacement faucet the next day. Although the faucet leaked, the support from the company was exceptional and I would recommend buying from them. Thanks again! ... show more
Reviewed in the United States on November 10, 2024 by Michael Fabiano

  • Push to connect. Don’t overtighten.
Style: 3-Stage Under Sink Water Filtration System
I am a farmer but also a trained HVAC guy with a lot of plumbing experience. I’ve read instructions and turned a few wrenches 1,000’s of times in my life but not a professional. This system is VERY easy to install for someone who is handy. Directions are clear. The water is great. High chlorine in our neck of the woods and no chlorine taste post filter. There are videos, which I didn’t watch, explaining how a push to connect (ptc) fitting works. If you’re not familiar please watch them. It is simple but also easy to mess up. EVERY fitting that is not connected, including the filter canisters, are sealed with o-rings. Tighten those just to where there is a little resistance and then go 3/4 to 1 more turn. DO NOT tighten anything with a rubber seal or o-ring till it’s as tight as possible. You will ruin it and cause a leak. Do these things and you’ll be happy with it. ... show more
Reviewed in the United States on December 6, 2024 by David Barber

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