Search  for anything...

AO Smith High-Efficiency Reverse Osmosis with SmartFlow™ Technology - Under Sink RO Water Filtration System w/Faucet & Compact Tank- Filters Chlorine & Other Contaminants - Chrome - AOS-Hero-CHR

  • Based on 32 reviews
Condition: New
Checking for product changes
$199.00 Why this price?
Save $50.00 was $249.00

Buy Now, Pay Later


As low as $33.17 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, May 23
Order within 23 hours and 23 minutes
Available payment plans shown during checkout

Features

  • Clean, Healthy Tap Water - Reduce up to 99% of 90 contaminants including fluoride, chlorine, chloramine, lead, arsenic, pesticides, PFOA/PFOS, cysts, microplastics, and more from water in your house.
  • Advanced Filtration - Under counter reverse osmosis filter system is indepently tested to NSF standards 42, 53, 58, and 401.
  • Dedicated Faucet - Keep water in your home's kitchen flowing with a chrome air gap faucet that prevents backflow into your filtration system.
  • Easy Filter Replacements - Simply twist out the used cartridge and replace with an AO Smith replacement filter for continued contaminant removal. Use only certified, genuine AO Smith replacements.
  • Includes first set of filters, RO tank, faucet, and all parts required for under countertop installation. Use Genuine replacements AOS-HERO-S1S3 (B0CCQ9TKMM) and AOS-HERO-S2 (B0CCQCNDLK)

Brand: A. O. Smith


Special Feature: WQA certified


Product Dimensions: 19.8"L x 15.4"W x 16.8"H


Package Information: Filter Housing


Installation Type: Under Sink


Power Source: No Power Required


Item Weight: 21.4 Pounds


Model Name: AOS-HERO-CHR


Lower Temperature Rating: 40 Degrees Fahrenheit


Maximum Flow Rate: 0.8 Gallons Per Minute


Product Dimensions ‏ : ‎ 19.8 x 15.4 x 16.8 inches; 21.4 Pounds


Item model number ‏ : ‎ AOS-HERO-CHR


Date First Available ‏ : ‎ August 28, 2023


Manufacturer ‏ : ‎ A. O. Smith


Country of Origin ‏ : ‎ USA


Best Sellers Rank: #27,820 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #55 in Under-Sink & Countertop Filtration


#55 in Under-Sink & Countertop Filtration:


Customer Reviews: 4.6 4.6 out of 5 stars 32 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 23

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great tasting water
Easy enough to install, I'm a handy person so your mileage may vary. Fittings all seem high quality, in fact the whole thing seems high quality. Love the taste of the water, no more buying bottled. The dripping/bubbling noises are a small price to pay (and that is not unique to this system) for clean water, and it doesn't run that long, maybe 15 minutes if you fully drain the tank. ... show more
Reviewed in the United States on November 30, 2023 by M M

  • Great Water Filter System
The media could not be loaded. I recently had the opportunity to test the AO Smith High-Efficiency Reverse Osmosis system with SmartFlow™ Technology, and I must say, it's a game-changer for anyone looking to improve their home water quality. First and foremost, the effectiveness of this filtration system is remarkable. It works incredibly well to produce clean and great-tasting water, a noticeable upgrade from the usual tap water. I've been using this filtered water primarily for cooking for the past sixty days, and the difference in the quality of my meals is evident. The water tastes pure, with no trace of the bad flavors often associated with tap water. The AO Smith model is designed to reduce up to 99% of 90 contaminants, including fluoride, chlorine, lead, and more. Installation of the system was surprisingly easy. It's designed for under-sink installation, and the process was straightforward enough that I didn't need professional help. The filter is much longer lasting than the cheap disposable one I had previously that screws onto the sink faucet. The easy filter replacements are another convenient feature. Simply twisting out the used cartridge and replacing it with an AO Smith replacement filter makes maintenance hassle-free. Overall, the AO Smith High-Efficiency Reverse Osmosis System with SmartFlow™ Technology is an excellent investment for those looking to improve their water quality. It's a good value for the money and has exceeded my expectations in terms of performance and convenience. I highly recommend the AO Smith High-Efficiency Reverse Osmosis System with SmartFlow™ Technology to anyone looking for a high-quality and affordable reverse osmosis system. ... show more
Reviewed in the United States on November 28, 2023 by Philip Philip

  • Really nice, water tastes great, but the air gap faucet is noisy.
Installation was pretty easy. Just need to make sure you angle the water lines in such a way the water doesn’t gurgle but even doing so, it was very difficult to get it to stop completely and it still makes a gurgling noise while the tank refills. I’ve heard this is just a thing that happens with RO systems though so probably nothing against this particular one, but still. Overall a good system, I like it a lot. ... show more
Reviewed in the United States on November 19, 2023 by J

  • Easy to install. Makes a huge difference
I've been on the fence about getting one of these for quite a while and decided to pull the trigger and get it done. I'm honestly really glad I did. I don't have a point of comparison for the installation. Maybe they're all this straightforward but I doubt it. With all of the color coded lines and push connections, getting everything hooked up was way easier than I expected. Installing and changing the filters was really easy as well. Surprisingly easy. Makes me appreciate the investment even more. The quality of the water is head and shoulders above what we were getting out of the water filter pitcher that we have used for years. We only really use this for drinking water for the most part at least right now. This is simply due to the fact that it's an unefficient way to filter water as far as how much water it wastes. So it's definitely not something to use for all of your water that comes out. But for what it is, you really can't beat it. ... show more
Reviewed in the United States on October 31, 2023 by Jason Wilcox

  • Great Filtration System
I was very excited to get this filtration system. Installation was easy with one exception. The instructions say to connect the red vent tube as low as possible on the tail pipe close to the P-trap but when I did this and tested drains after installing the system by filling both sinks and draining them at the same time, I discovered that any water that backed up above the P-trap actually backed up through the filer system's red vent tube and out the vent hole at the base of the system's faucet. I researched this issue and found that it is pretty common with this system. I resolved this problem by removing and replacing the entire tail pipe and drilling the hole for the red vent hose higher on the tail pipe as shown in the attached pictures. Minor cons: If you use a lot of filtered water from this system at one time you will hear air and bubbling sounds coming from the vent hole at the base of the system's faucet as the system's tank refills which takes several minutes. I wish that the filter handles protruded out further so that someone with bigger hands could turn the filter cartridges easier in order to lock and unlock them. PRO's The system was easy to install despite the one issue I noted The system looks good and neat under my sink. THE WATER TASTE FANTASTIC!!!!!! ... show more
Reviewed in the United States on October 9, 2023 by C Tucker C Tucker

  • Great tasting water
The AO Smith high-efficiency reverse osmosis with SmartFlow™ technology is an excellent water filtration system. This system was incredibly easy to install. All of the hoses are color coded and the online video from AO Smith explains what to do and how to do it in the correct order. I had a couple of small issues with placement of the equipment under the sink but they were minor. I planned on using the water primarily in my pellet ice machine. I will also be using it for drinking water. The water tastes great and I am very happy I went with this system. AO Smith is a respected industry leading company and I know they make quality products. The only concern I have is the cost of the replacement filters. The only ones I have researched online were about $180.00 for a set of three which is close to 75% of the cost of the unit. I have about 6 to 9 months before I will need filters. The system is outstanding but my opinion will go down if the cost of filters remains at $180 a set. ... show more
Reviewed in the United States on October 13, 2023 by RedDogTX

Can't find a product?

Find it on Amazon first, then paste the link below.