---
product_id: 129125870
title: "Under Sink Water Filter System - Reduces PFAS, Lead, & Chlorine in Drinking Water - Under Counter Claryum Filtration for Kitchen - 2-Stage - AO-US-200"
brand: "ao smith"
price: "€ 251.19"
currency: EUR
in_stock: true
reviews_count: 8
category: "Ao Smith"
url: https://www.desertcart.fi/products/129125870-under-sink-water-filter-system-reduces-pfas-lead-and-chlorine
store_origin: FI
region: Finland
---

# 0.5 GPM flow rate DIY install in minutes 99% reduction of 78 contaminants Under Sink Water Filter System - Reduces PFAS, Lead, & Chlorine in Drinking Water - Under Counter Claryum Filtration for Kitchen - 2-Stage - AO-US-200

**Brand:** ao smith
**Price:** € 251.19
**Availability:** ✅ In Stock

## Summary

> 💧 Drink Smart, Live Elevated: Filtered Water That Works as Hard as You Do

## Quick Answers

- **What is this?** Under Sink Water Filter System - Reduces PFAS, Lead, & Chlorine in Drinking Water - Under Counter Claryum Filtration for Kitchen - 2-Stage - AO-US-200 by ao smith
- **How much does it cost?** € 251.19 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/129125870-under-sink-water-filter-system-reduces-pfas-lead-and-chlorine)

## Best For

- ao smith enthusiasts

## Why This Product

- Trusted ao smith brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Always On, Always Fresh:** Dedicated faucet delivers filtered water at 0.5 gallons per minute—perfect for busy kitchens and health-conscious pros.
- • **Certified Peace of Mind:** WQA tested & NSF/ANSI 42, 43, 401 certified for guaranteed water quality and system integrity.
- • **Effortless Installation:** Connects easily to your cold water line with included tubing and faucet—no plumber needed, no hassle.
- • **Pure Water, Zero Compromise:** Advanced 2-stage Claryum filtration removes lead, PFAS, chlorine & more while preserving essential minerals.
- • **Sustainable & Cost-Effective:** Filter lasts 6 months/500 gallons with zero water waste and under $120 annual maintenance.

## Overview

The AO Smith Under Sink Water Filter System offers a premium 2-stage Claryum filtration that reduces 99% of 78 harmful contaminants including PFAS, lead, and chlorine, while retaining essential minerals. Certified to NSF/ANSI standards, it installs easily without a plumber and delivers filtered water at 0.5 gallons per minute through a dedicated faucet. Designed for efficiency and sustainability, its filter lasts 6 months or 500 gallons, making it a cost-effective upgrade for health-conscious households.

## Description

AO Smith Under Sink Water Filter System - Reduces PFAS, Lead, & Chlorine in Drinking Water - Under Counter Claryum Filtration for Kitchen - 2-Stage - AO-US-200 - desertcart.com

Review: Easy to install and efficient - These filters are great! I just installed my second one. There was nothing wrong with the first one, bit the plumbing has to be replaced after 5 years. Mine was pushing 6 years and I didn't want to risk broken lines. Installing it is really easy and takes about an hour depending on space and if you have basic plumbing skills. Filter replacement takes 5 minutes.
Review: I wish I hadn’t waited so long to make the change from spring water delivery to this filter. - After more than twenty years of having 5 gallon bottles of spring water delivered, the water started to have a strange taste/odor, so I canceled my delivery service and started looking for alternatives and the New York Times Wirecutter review recommended this one for removal of chlorine, plastics, and metals at a low price. Installation was straightforward (although I wish the lettered parts were included in the numbered diagram) and immediately after the recommended 10 minute flush out period my tap water, which is not horrible but has a chlorine taste, tasted great. I plan to fill a 3 gallon glass water cooler bottle with this filtered water to use with my existing cooler so I always have cold and hot water available as usual. My yearly cost for drinking water will be reduced by about 70% once I factor in the cost of replacing the filters every six months. Highly recommend!

## Features

- Clean Water Straight From A Dedicated Faucet - Connects with included tee to your 3/8 inch threaded cold water supply line to an additional faucet included with the system. Only takes a few minutes. Includes tubing needed for installation - no plumber required.
- Purifies Water & Reduces 99% of 78 Harmful Contaminants - Advanced filtration while leaving in all essential minerals. Reduces lead, PFAS (specifically PFOA and PFOS), chlorine, mercury, asbestos, pharmaceuticals, chloramine & more. System will not reduce TDS.
- Full System Certified To NSF/ANSI Standards 42, 43 and 401 - Product is WQA tested & certified to NSF performance standards, ensuring the structural integrity & quality of your entire system, not just the filtration media.
- Long Lasting & Cost Effecient - No water is wasted and no harmful contaminants are added to your water during filtration. Filter lasts for 6 months/500 Gallons. $120 or less in annual maintenance cost.
- Access To Filtered Water Whenever You Need It - System filters water at 0.5 gallons per minute. Perfect for families of 1 to 4.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07NJ4P99G |
| Batteries | 1 Lithium Metal batteries required. (included) |
| Best Sellers Rank | #3,547 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #74 in Under-Sink & Countertop Filtration |
| Brand | AO Smith |
| Date First Available | February 8, 2019 |
| External Testing Certification | ANSI, NSF |
| Item Weight | 0.01 ounces |
| Item model number | AO-US-200 |
| Manufacturer | AO Smith |
| Material | carbon block |
| Number of Items | 1 |
| Product Dimensions | 11.73 x 8.66 x 5.67 inches |
| UPC | 811640030063 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** AO Smith
- **External Testing Certification:** ANSI, NSF
- **Item Weight:** 0.01 Ounces
- **Material:** carbon block
- **UPC:** 811640030063

## Images

![Under Sink Water Filter System - Reduces PFAS, Lead, & Chlorine in Drinking Water - Under Counter Claryum Filtration for Kitchen - 2-Stage - AO-US-200 - Image 1](https://m.media-amazon.com/images/I/71OVCRfcXhL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Why is the filter leaking from the filter housing?**
A: This is most commonly caused by misalignment, ensure your filter is aligned and completely locked into place. Do so by turning the filter housing completely to the left.

**Q: What O-rings does this filter system use?**
A: Due to certification, this system requires original O-rings from the manufacturer.

**Q: How often do I need to replace the filters for this system?**
A: Both filters in this system must be replace every 6 months or every 500 gallons.

**Q: What do I need to install the unit?**
A: For installation, we recommend a drill with 7/32" bit, adjustable wrench, measuring tape, bucket, Phillips head screwdriver, and hammer. All parts needed for installation are included with the system.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to install and efficient
*by A***R on January 23, 2026*

These filters are great! I just installed my second one. There was nothing wrong with the first one, bit the plumbing has to be replaced after 5 years. Mine was pushing 6 years and I didn't want to risk broken lines. Installing it is really easy and takes about an hour depending on space and if you have basic plumbing skills. Filter replacement takes 5 minutes.

### ⭐⭐⭐⭐⭐ I wish I hadn’t waited so long to make the change from spring water delivery to this filter.
*by W***E on February 1, 2026*

After more than twenty years of having 5 gallon bottles of spring water delivered, the water started to have a strange taste/odor, so I canceled my delivery service and started looking for alternatives and the New York Times Wirecutter review recommended this one for removal of chlorine, plastics, and metals at a low price. Installation was straightforward (although I wish the lettered parts were included in the numbered diagram) and immediately after the recommended 10 minute flush out period my tap water, which is not horrible but has a chlorine taste, tasted great. I plan to fill a 3 gallon glass water cooler bottle with this filtered water to use with my existing cooler so I always have cold and hot water available as usual. My yearly cost for drinking water will be reduced by about 70% once I factor in the cost of replacing the filters every six months. Highly recommend!

### ⭐⭐⭐⭐⭐ '
*by J***M on November 9, 2025*

Product works just as expected. Flow rate is good. Installation was fairly simple other than reaching behind the sink to install the filter faucet. I experienced no leaks but I did use plumbers tape on all the connections. HIGHLY RECOMMEND! Makes my water taste so much better but I have to say its not Poland Spring.

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---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-01*