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iSpring US31 Classic 3-Stage Under Sink Water Filtration System for Drinking, Tankless, High Capacity, Sediment + Carbon + Carbon (Newest Version)
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Brand | iSpring |
Product Dimensions | 16"L x 6"W x 16"H |
Package Information | Cartridge |
Power Source | Ac |
Item Weight | 12.02 Pounds |
Model Name | US31 |
Upper Temperature Rating | 100 Degrees Fahrenheit |
About this item
- [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]: This system is designed for easy installation, low maintenance, and features dual carbon block filters along with a high-capacity sediment filter. The sediment filter protects and extends the life of your system, while the carbon block filters work to remove many harmful contaminants a. You can replace the filter every 6 to 12 months, judged by the water’s taste.
- [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.
Frequently bought together
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Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 16 x 6 x 16 inches; 12.02 Pounds
- Item model number : US31
- Date First Available : March 15, 2018
- Manufacturer : iSpring Water Systems
- ASIN : B07CHXVRS5
- Country of Origin : Taiwan
- Best Sellers Rank: #9,845 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
- Customer Reviews:
Product Description
This 3-stage filter system is designed for easy installation, low maintenance, and features dual carbon block filters along with a high-capacity sediment filter. The sediment filter protects and extends the life of your system, while the carbon block filters work to remove many harmful contaminants, providing you with bottled quality water on demand.
From the brand
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How did we get our start?
Established in 2007 in Atlanta, Georgia, we have been dedicated to providing easily accessible clean water solutions to ensure that every household has access to safe water through our products.
What makes our products unique?
We prioritize our customers by offering innovative products, easy DIY installation, and ongoing research and development of new filtration systems that set us apart from the competition.
Why do we love what we do?
We take pride in committing to excellence in designing and manufacturing quality water filtration products.
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From the manufacturer
At iSpring, we look beyond technology to make high quality drinking water accessible for all households. We provide our customers with professional water solutions to any water concerns they may have.
Why US31?
No more paying to have water delivered, the US31 Under-Sink Water Filter provides up to 2000 gallons directly from your tap at a fraction of the cost.
This system is designed for easy installation, low maintenance, and features dual carbon block filters along with a high-capacity sediment filter. The sediment filter protects and extends the life of your system, while the carbon block filters work to remove many harmful contaminants and providing you with bottled quality water on demand.
- Flow Rate: Up to 1GPM depending on source water pressure
- Maximum Pressure: 90psi
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The on-demand fast flow rate of the US31 allows it to meet the widest possible range of needs in your home. Whether it's washing fresh produce like fruit and vegetables, or providing us with some extra peace of mind about the safety of our best friends, this system can provide you entire family with delicious, clean water straight from your tap. |
Please note: This under sink water filtration system DOES NOT lower TDS value, instead it will keep healthy minerals in your water. If you are interested in a filter that eliminates TDS, please consider our iSpring tankless under sink Reverse Osmosis (RO) system RO500 or countertop RO water filter system RCT600 for more details. |
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US31 | US21B | RCC7 | RCD100 | US15D | |
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Customer Reviews |
4.5 out of 5 stars
1,528
|
4.4 out of 5 stars
86
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4.7 out of 5 stars
3,381
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4.6 out of 5 stars
355
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4.7 out of 5 stars
85
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Filter Size | 10” x 2.5” | 10” x 4.5” | 10” x 2.5” | 12” x 2.8” | 15” x 2.5” |
Removes Chlorine, Chemicals, Heavy Metals, Odors, and More | ✓ | ✓ | ✓ | ✓ | ✓ |
Removes TDS | - | - | ✓ | ✓ | - |
Filtered Water to Waste Water Ratio | No Waste Water | No Waste Water | 1: 1.6 | 2.5:1 | No Waste Water |
Tankless Design | ✓ | ✓ | - | ✓ | ✓ |
Direct Connect (No Extra Faucet) | - | ✓ | - | ✓ | ✓ |
What's in the box
Product guides and documents
Videos
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the ease of installation using the water purification unit. They mention that the instructions are pretty good and the YouTubes are also helpful. They say that the water tastes better and removes all the off flavors and smells. Customers appreciate the value for money, saying that it's well worth the purchase. They also like the filtering quality, completeness, and water quality. However, some customers have reported issues with leakage.
AI-generated from the text of customer reviews
Customers find the installation of the water purification unit to be easy. They mention that the instructions are clear and easy to follow. They appreciate the quick connect fittings for where the water lines attach to the unit, making it easy to service the filters. They also like that the system is easy to Tee one of the lines if they want to provide filtered water to other areas.
"...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)...." Read more
"I am truly pleased with the quality of this system. Instructions are very detailed. Everything is professionally packed and organized inside the box...." Read more
"...The installation process was pretty simple and just about anyone who has installed a faucet should be able to intall this filter if they read and..." Read more
"...The installation instructions were easy to follow. I was lucky in that the cold water diverter valve fit my installation without any extra work...." Read more
Customers like the quality of the water purification unit. They say it's a great system with affordable filters. Customers also mention that the product works great, is well-made, and has an excellent customer service. They also say that the price is fair and the company has an outstanding reputation.
"...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...." Read more
"I am truly pleased with the quality of this system. Instructions are very detailed. Everything is professionally packed and organized inside the box...." Read more
"...First off, I liked the quality of all the components. The installation instructions were easy to follow...." Read more
"...It fits, works, and handles fine for me tho. But check the dimensions on the page. Mine was a tight squeeze but I should have checked that prior...." Read more
Customers like the taste of the water purification unit. They say it makes the water taste better, removes all the off flavors and smells, and makes a big difference in the taste and quality of their drinking water.
"...This 3-Stage system is outstanding. The water taste great and there is zero waste like there is with an RO system...." Read more
"...Great tasting water! Recommended!!!" Read more
"We love iSpring’s filter system. Our drinking water tastes very fresh & clean...." Read more
"...This replaced that system and the water tastes as good." Read more
Customers appreciate the value of the water purification unit. They say the compression fittings are very inexpensive, and the filters are affordable. They also say the installation process was easy and the product is well worth the purchase. Customers also mention that the filter sets are cheap, under $20, and last a long time.
"...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...." Read more
"...The replacement cartridges are also very inexpensive, so I ordered an extra set to have on hand, and set up am Amazon subscription purchase for..." Read more
"...Filters last a long time and are VERY cheap to replace- Water tastes really good- Customer Support was excellent-..." Read more
"...The replacement filter packs are considerably cheaper too. So glad we switched to iSpring!..." Read more
Customers like the filtering quality of the water purification unit. They say the build quality is pretty darn good, the system is streamline, and produces great filtered water. Customers also say it's one of the best water filtration systems on the market, and a great choice for filtered Water in the home. The 3 filters are very good and help the taste of the Water. The filter works quickly, filtering enough water for a pot of coffee in a few minutes.
"...I believe this is one of the best water filtration systems on the market...." Read more
"...The filter works quickly, filtering enough water for a pot of coffee in a few seconds. These are so much better than pitcher-style filters...." Read more
"...Quite happy with it.- Great filters in terms of quality of filtration. If flouride is a problem for you, consider their RO filter tho.-..." Read more
"...They give you more tubing than you can probably use. The water came out cloudy, air bubbles, as they said it would for first time use...." Read more
Customers like that the water purification unit comes with everything they need. They say it's well built, and comes with all the parts they need, including hardware. Some customers also mention that the system is easy to install and comes complete with fittings and tubing. Overall, customers are happy with the value and quality of the product.
"...excellent reputation, the filters are built well, and it comes with every piece and part needed to hook it up...." Read more
"...All of the necessary hardware was included, along with more than enough plastic tubing to make the needed connections...." Read more
"The unit was very easy to install, came with everything needed...." Read more
"...Other than that it comes with everything I needed and was a breeze to install. Take special note of the flow direction on the filter...." Read more
Customers are satisfied with the water quality of the water purification unit. They mention that it provides excellent clean water, with a clear taste. They also say that the three filters should provide good water throughput. Overall, customers find it to be a great under-sink water filtration system and a perfect solution for drinking water.
"...That cleared up after a short time using the filter. The water comes out as good, or better, as bottled without the extra fuss of buying bottles or..." Read more
"...This system is extremely quiet, you can’t hear it at all, & it doesn’t waste any water unlike the tons of water wasted by our old Watts Reverse..." Read more
"Water quality is a lot of better. For example taste, clear water and the quality bette...." Read more
"...This is way faster and way better water. It does take up quite a bit more space than I thought it would, but fit just fine under the sink...." Read more
Customers are dissatisfied with the leakage of the water purification unit. They mention that it was leaking, had a problem with a leak between filters, and had dripping issues. Some say that if the unit fell over it could cause problems with filtration.
"...If it fell over it could cause problems with filtration. The advantage to the size, however, is it has room to hold quality filters...." Read more
"...So it was leaking, I immediately used the new cutoff and it stopped it immediately...." Read more
"...was easy and the quick connect fittings worked great with no leaks. I checked the replacement filter costs and they are very reasonable...." Read more
"...One of the unions between the filters was cracked and leaking. Reached out to customer support (email) and got a quick response...." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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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.
The difference in the taste and odor of out water was amazing! My wife thought our municipal water tasted ok, but after I installed this filter and she compared the filtered and unfiltered water, she was sure that I did something to the unfiltered water to make it taste worse than it did! I really like this item and have recommended it to family members.
Top reviews from other countries
Reviewed in Canada on December 18, 2023