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iSpring

iSpring UVF11A UV Water Filter for Under Sink Water Filter & RO Systems

Based on 1,666 reviews
Condition: New
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$102.85
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Availability: In Stock.
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Arrives Sunday, Nov 15
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At a glance

Condition
New
Set
UV Fit Under Sink
Model
UVF11A
Capacity
1 gal
Dimensions
10"L x 2"W x 2"H
Weight
2 lb
Material
Stainless Steel
In the box
Stainless Steel bodyUV lampBalast
Warranty
manufacturer warranty

Features 5

  • SMART & ECONOMICAL - Smart flow sensor switch turns the UV water filter under sink on and off automatically with water flow, saving power and lengthening the life of the UV lamp.
  • COMPATIBLE & EASY INSTALLATION - Complete add-on Kit, this ultraviolet light is compatible with most reverse osmosis (RO) water filtration systems as a final stage of protection. If having a tank, install this UV filtration system after the storage tank where water flow is high enough.
  • 11W UV lamp of this ultraviolet water filter under sink in a stainless steel chamber with 1/4" inlet/outlet quick connect fittings. Includes a UV lamp made in Poland.
  • EFFECTIVE - The UV water purifier for sink is a suitable solution to filter well water and other problem water sources like water from lakes and streams.

Description

The UVF11A UV Water Filter is a complete add-on kit that can be added to most under sink or RO systems as a final stage. Combining a Reverse Osmosis filtration system with UV light water purifier provides the most complete method of water filtration available. The ultraviolet light sterilizer UVF11A features an 11 watt UV lamp shielded in a stainless steel housing versus the 6 watt lamp commonly found in other products. A flow sensor switch turns the UV sterilizer on and off automatically with water flow, saving power and lengthening the life of the UV lamp. It is suitable to be installed as a final stage of the under sink water filtration system. What's included in this UV water sterilizer under sink: Stainless steel housing with Quartz sleeve 11W Germicidal UV lamp 110V Electronic ballast with Smart Flow Control Switch and Rubber O-ring 2 quick-fittings 2 brackets to hang the filter on the wall User Manual.

Specs 30

Brand iSpring
Special Feature Automatic Shut-Off
Product Dimensions 10"L x 2"W x 2"H
Material Stainless Steel
Capacity 1 gallons
Package Information Tank
Installation Type DIY
Purification Method Reverse Osmosis, Ultraviolet

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 15

Yes, absolutely! This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

Outstanding Results, Great Support from iSpring
Set name: 500 GPD Alkaline RO + Brushed Nickel ...
I purchased a RO-500AK under sink tankless RO water filter about a year ago. The unit was extremely easy to install and the instructions were thorough and included pictures. I was amazed at how compact the unit is compared to my previous under sink filter system. The unit has filter minders that give a purple indication that a filter change is upcoming (about 30 days) and then a red indicator when it is time to change just performed my second filter change (the alkalinity filter at 6 months and the alkalinity and composite filters at 1-year) and I am amazed at how easy the process is, just a quarter turn counter clockwise, remove the old filter, insert the new one, a quarter turn back clockwise and its done. Once I had the filter installed, I gave the system the ultimate test. I poured two identical glasses of water, held my breath, and called my wife into the room. I asked her to do a blind taste test and choose her favorite. She immediately chose the iSpring filtered water, claiming that it tasted "cleaner". She has turned into quite the water aficionado, and uses it to cook as well as drinking. The water has such a clean taste we prefer it to tap and bottled water. Like many, I use a CPAP nightly. The unit has to be filled nightly with distilled water, so I bought a small countertop distiller to "make" my own water. The unit distills the water by boiling then recondensing the water into an outside container. All of the sediment and minerals are left in the boiling chamber. I was horrified at the sludge that remained after distilling a single gallon of water and had to clean it after each gallon. Now that I use my iSpring filtered water in the distiller, I distill 4 gallons of water each session with there being hardly any sediment or mineral scaling and can wipe it clean with a paper towel. What an added bonus! After my last filter change I inadvertently kinked the water supply line resulting in a no-flow condition. I used the contact icon tool and left a message about my issue. Myra contacted me promptly via email requesting a detailed description of what I had done and pictures of the unit. Don called me the next morning to help troubleshoot the filter system. He walked me through various steps of troubleshooting, had me text him pictures and worked to resolve the issue. When I moved the unit out from under the sink, the kink was eliminated and my unit was functioning normally again. I was somewhat embarrassed that I had tied up the support staff with something that was my fault, but he remained on the line and made sure that the system was 100% restored. Talk about customer focused service, these guys set the example and stand behind their product. If you are considering an undersink RO filter for your family, I highly recommend iSpring and this product and the company behind it. You know what they say "happy wife, happy life", she was so concerned about not having the filter available . I am just glad that we were able to get the filter back online quickly. You can buy this item with confidence! If you have any questions about it, let me know. Thanks ... show more
Reviewed in the United States on September 9, 2022 by Michael Wilson
Great tasting water, smooth install
Set name: 500 GPD Alkaline RO + Brushed Nickel ...
Review Image by Des Moines
Review Image by Des Moines
The water tastes amazing and fills faster than my fridge dispenser. (although it's not "fast" by any means, it's more than sufficient.) Now that it's installed, I wish I would have installed it years ago. Nitrate levels are high in Iowa and this unit lowers them to near zero, along with removing other harmful contaminates. The part that held me back for so long was drilling a hole in my granite countertop. It ended up being not bad at all. Just buy a quality diamond drill bit made for stone/granite and watch a few videos on youtube. I bought the Milwaukee 1/2 inch diamond bit and it worked flawlessly. 1/2 inch is the right size for the faucet that comes with this unit. As far as other complaints or concerns from the reviews: I didn't have any leaks at all after installing. Take your time and make sure connections are tight. Install overall took about 2 hours including drilling the hole in the countertop. What took me so long was my own fault- I ended up having to remove my dishwasher and pull the power cord through the hole in the cabinet where the dishwasher had power. I didn't think about how the open power outlet with the garbage disposal only works when the switch is on. Noise: it makes a bit of noise while you're dispensing water, but it's not loud at all under the sink. I barely hear it. Size: the unit isn't small but doesn't take up that much space under the counter. Overall I highly recommend this unit. I've only had it a few days but so far it's been amazing. ... show more
Reviewed in the United States on May 4, 2026 by Des Moines
ISpring Tankless RO
Set name: 500 GPD Alkaline RO + Brushed Nickel ...
This ISpring Tankless RO is exceptional both in function and in the amazing service that is provided for ongoing support. Drinking water is THE major health issue for overall wellness, longevity, etc. First the product...it is tankless so installation under a sink is straightforward. I still had my plumber do it and he was done in 10 minutes. Then you get crystal clear on demand drinking water all day. Suddenly my coffee, tea, soups, etc. all taste amazing. Filter changes are a breeze...on a six month, one year, and two year cycle....it is just a quarter turn and done. It is easier than changing inkjet printer cartridges. Next, the service. ISpring provides support with REAL HUMANS. You call on an issue of filter change or anything else and a helpful rep with real expertise is there to guide you. In my case my system started to act up and not deliver water without unplugging and replugging the unit several times. I called ISpring and my rep -- NICK -- listened to the pattern I described and determined it was an issue with the pump....my unit was 21 months old and within the warranty and he promptly sent me a new base unit! This was amazing....they really do stand behind their product and the price is so reasonable for something that is essential every day. I tell everyone about this system because of its quality and for super service reps like NICK who truly care about their clients.! ... show more
Reviewed in the United States on September 6, 2025 by Michael T.
Easy Install, Compact, and Leak-Free
Set name: 500 GPD Alkaline RO + Brushed Nickel ...
Review Image by jennifer
Review Image by jennifer
I’ve been using this reverse osmosis system for about three months now, and it’s been working great. Installation was straightforward, and I like that it has a small footprint under the sink, leaving plenty of room for storage. Most importantly, I’ve had zero leaks or issues since installing it. A couple of notes for anyone planning their install: * I didn’t use the included drain saddle adapter because I couldn’t—and didn’t want to—drill into my existing drain plumbing. Instead, I purchased an aftermarket drain adapter that connects to the garbage disposal (pictured), which worked perfectly. * I also chose to use a different faucet/dispenser so it would match the finish of my existing kitchen faucet. Overall, I’m very happy with this brand and system. I also installed a 2 stage whole house filter from this brand. I would definitely recommend it. It performs well, was easy to install, and has been trouble-free so far. I ... show more
Reviewed in the United States on July 27, 2026 by jennifer
5 stars — highly recommended
Set name: LED UV Fit Under Sink
I've been using iSpring products for years, from simple whole-house filters to more advanced multi-stage filtration systems. Throughout that time, their products have consistently been easy to install, straightforward to maintain, and have worked flawlessly right out of the box. Recently, I purchased the UVF8 LED UV Water Filter and was surprised when it didn't perform as expected—the indicator light wasn't illuminating during water flow. Rather than going through Amazon, I contacted iSpring support directly to make sure I wasn't overlooking something. That's when I connected with John from iSpring Support. His customer service was outstanding. Instead of putting me through a lengthy troubleshooting process, he quickly arranged to send a replacement filter directly to me and even included custom shipping instructions to ensure smooth delivery. The replacement arrived promptly, and it worked perfectly from the moment I installed it. In all the years I've been using iSpring products, I've never had a reason to contact their support team before. It was reassuring to discover that their commitment to customer satisfaction is every bit as impressive as the quality of their products. They truly stand behind what they sell. This experience has only strengthened my confidence in iSpring. Great products backed by exceptional customer service have earned my loyalty, and they'll continue to be my first choice for water filtration solutions. ... show more
Reviewed in the United States on June 16, 2026 by DmacV2
iSpring RO500AK-BN & iSpring ICEK
Set name: 500 GPD Alkaline RO + Brushed Nickel ...
We had a 3 filter tank version of a Reverse Osmosis (RO) in our last house on well water. It was originally installed because the water was high in nitrates. In a few years the water eventually purged itself of the contaminates. However, since we had it, we continued to use it for cooking, drinking and our ice maker in the refrigerator for over 29 years. We were pretty familiar with what an RO filter it does and its maintenance. The rest of the story... we have owned a small townhome in south Texas for 10 years and recently moved in full time. From day one the city water although drinkable was pretty nasty stuff with the Total Dissolved Solids (TDS) readings between 400 and 600. We knew we needed to do something about the water once we living there full time. We are quite cramped for space so we opted for a tankless RO system verses the tank version we were most familiar with. After some searching around the web, we selected the iSpring RO500AK-BN because of its 2:1 waste water ratio, customer recommendations and ordered it through Amazon. We chose Amazon in part because of their return policy as we were venturing into new territory. We were hopeful it would clean up the water provide enough pressure for the ice maker in our refrigerator. The water was so bad we had turned off the water connection to the refrigerator. After installation our TDS went from in the 400's to 56 and with the help of Alkaline option filter the water tastes great. We had some questions about its operation and the support folks Francis & Sean at iSpring were outstanding responding promptly by both email & telephone. Way better customer support than any other device we have ever bought. Once we hooked up the water line using the iSpring ICEK the ice maker was making nice clean ice like crazy. (YMMV) We have had it in operation for about 2 months and it has worked superbly. The installation is not difficult at all with basic tools. However, in our opinion the operation manual could use some improvement. The operation of the "alarm/indicator" light (Not the filter lights) could use some improvement. For instance, when filling the tea kettle, the "alarm/indicator" light would on occasion flip from Blue (all OK) to Red or Purple (trouble) but it is unclear what that means or what to do about it. In our case if you let the tap run for a couple minutes it would change back to Blue. We were told this is normal BUT that is not addressed in the manual. We bought a spare set of filters to have on hand but do not expect to need them for many months yet. In the end we are loving the clean water & ice cubes it produces. ... show more
Reviewed in the United States on May 1, 2023 by DaCapn
Installed incorrectly to the wrong outlet:)
Set name: 1000 GPD RO + Brushed Nickel Faucet
Update: product is working no issues with it. The problem was with the installer, ME :) I had it plugged in the garbage disposal outlet. I called Ispring tech-support and he was very professional and friendly. Yes, I recommend this product. Finally got a chance to install after it arrived 2 months ago. The shipping box was in good shape and contents inside were packaged well. Installation was fairly straightforward but that’s were the good reviews end. Turned on water and connected power, nothing. No no motor noise or lights in the front. Checked all connections, all good. Checked power outlet with a lamp and it has power. Disconnected power for more than 5 mins to reset, nothing. Finally checked with ChatGPT and it mentions that the most common issue for this product is the power supply. I check the power output from the ac/dc power brick and no power. Straight out of the box and it’s DEAD!!!! Of course I can only do this on the weekend and Ispring is closed on the weekend. I’ll have to wait till Monday. Since I can’t return through Amazon anymore, I hope Ispring will stand behind their product. I would not recommend this product due to very poor quality. ... show more
Reviewed in the United States on July 18, 2026 by Dominic
before and after testing
Set name: 500 GPD Alkaline RO + Oil Rubbed Blac...
I have been using the RO500AK-ORB system for two years so far. Excellent results! Very pleased! I highly recommend! Here is a report of before and after measurements plus some comments of my experience with it. To make my measurements, I used the KONVIO NEER 5-in-1 TDS meter. I did 2-point calibration of the concentration as well as the pH before each measurement. TDS of tap water before RO was 240 ppm. With RO is 19 ppm. The taste is great. Flow rate is strong. Cartridge replacement is easy. I am also using the FA15 alkaline add-on filter for the purpose of raising Mag level and pH. Initially it produced an unpalatable earthy taste, however this resolved completely after flushing for 15 minutes. This is an important step. Tastes great now. Here is the information that I received from an iSpring chemist by email: The average ppm rating for the FA15 is 10 to 40 ppm and approx. 30% of the 10 to 40 avg. is magnesium. The RO500AK only adds back calcium, unlike the FA15 which contains magnesium oxide. The FCA500 has only activated carbon and calcite. In my own case, the rise in TDS with the alkaline filter was from 19 to 36. This is an increase of just 17, not as high as I was hoping. My interest was in restoring magnesium level, since Mag in water >8-10ppm has been shown to correlate with better cardiovascular health. Based on information from my local water facility, my river source carries 11ppm Mag to start with, so I was hoping to replenish that Mag level with the alkaline filter. With a rise of 17 ppm, this means I added only 5ppm of Mag. Additionally, I was hoping for a rise of pH level, since there are claims that alkaline water is healthier because of enhanced water absorption, hence hydration efficiency. Not sure if those claims are well founded or not. In any case, my pH rose from 7 to 7.3, which is much less than the 1 full unit of pH increase that is being advertised. I absolutely love the RO filtration system! Less enthusiastic about the performance of the alkaline filter, but it's an add-on that is optional anyway. ... show more
Reviewed in the United States on April 9, 2026 by Flavius Raslau
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