---
product_id: 321284245
title: "AO Smith Basic Direct Connect Under Sink Replacement Filter for AO-MF System - Carbon Block Filter Reduces Up to 99% of 9 Harmful Contaminants - AO-MF-R"
brand: "ao smith"
price: "¥34512"
currency: JPY
in_stock: false
reviews_count: 5
url: https://www.desertcart.jp/products/321284245-ao-smith-basic-direct-connect-under-sink-replacement-filter-ao
store_origin: JP
region: Japan
---

# 1.4 GPM flow rate 6-month durable lifespan 99% contaminant reduction AO Smith Basic Direct Connect Under Sink Replacement Filter for AO-MF System - Carbon Block Filter Reduces Up to 99% of 9 Harmful Contaminants - AO-MF-R

**Brand:** ao smith
**Price:** ¥34512
**Availability:** ❌ Out of Stock

## Summary

> 💧 Pure water, zero compromises—upgrade your under-sink filter game today!

## Quick Answers

- **What is this?** AO Smith Basic Direct Connect Under Sink Replacement Filter for AO-MF System - Carbon Block Filter Reduces Up to 99% of 9 Harmful Contaminants - AO-MF-R by ao smith
- **How much does it cost?** ¥34512 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/321284245-ao-smith-basic-direct-connect-under-sink-replacement-filter-ao)

## 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

- • **Eco-Smart & Cost Effective:** Zero water waste filtration with a 6-month lifespan—better for your wallet and the planet.
- • **Certified Quality Assurance:** IAPMO tested and NSF/ANSI 42 & 53 certified for trusted performance you can count on.
- • **Effortless DIY Installation:** No plumber needed—swap your filter in minutes and keep your water pure without hassle.
- • **Mineral-Friendly Purification:** Keeps essential minerals intact while eliminating toxins—because your water should nourish, not just cleanse.
- • **Advanced Carbon Block Filtration:** Reduces up to 99% of 9 harmful contaminants including chlorine, lead, and cysts for cleaner, safer water.

## Overview

The AO Smith Basic Direct Connect Under Sink Replacement Filter (AO-MF-R) is a carbon block filter designed for the AO-MF system, reducing up to 99% of 9 harmful contaminants including chlorine and lead. It delivers a steady 1.4 gallons per minute flow rate, preserves essential minerals, and lasts 6 months per filter. Certified to NSF/ANSI 42 and 53 standards, it offers easy, plumber-free installation and eco-friendly, cost-effective water purification.

## Description

Free delivery and returns on all eligible orders. Shop AO Smith Basic Direct Connect Under Sink Replacement Filter for AO-MF System - Carbon Block Filter Reduces Up to 99% of 9 Harmful Contaminants - AO-MF-R.

Review: Easy to install.
Review: I used one for about a year before changing. Really improves the city drinking water. Does lower cold water pressure just a bit but I kinda expected that. On my second one now.

## Features

- Replacement filter for the basic main water filter system (AO-MF) - easy replacement and no plumber needed. Includes carbon filter. Not suitable for AO-MF-ADV, AO-FF or AO-MF-B filter systems.
- Purifies Water & Reduces 99% of 6 Harmful Contaminants - Basic Filtration While Leaving All Essential Minerals Reduces chlorine, lead, cysts, atrazine, lindane and turbidity. The system does not reduce TDS.
- DURABLE AND COST EFFECTIVE - No water waste and no harmful contaminants are added to your water during filtration. The filter lasts 6 months.
- Use only AO Smith certified replacement filters to remove contaminants and system performance.
- IAPMO tested and certified to NSF/ANSI 42 and 53 standards.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08VD2QCWN |
| Batteries Required? | No |
| Batteries included? | No |
| Customer Reviews | 4.5 4.5 out of 5 stars (182) |
| Date First Available | 28 Jan. 2021 |
| Flow rate | 1.4 Gallons Per Minute |
| Item Package Quantity | 1 |
| Item Weight | 907 g |
| Item model number | AO-MF-R |
| Manufacturer | AO Smith |
| Material | Carbon Fibre |
| Part Number | AO-MF-R |
| Product Dimensions | 7.62 x 7.62 x 36.83 cm; 907.18 g |
| Style | Replacement filter system |

## Product Details

- **External testing certification:** IAPMO, ANSI, NSF
- **Item weight:** 2 Pounds
- **Material:** Carbon Fibre
- **Product dimensions:** 7.6D x 7.6W x 37.1H centimetres

## Images

![AO Smith Basic Direct Connect Under Sink Replacement Filter for AO-MF System - Carbon Block Filter Reduces Up to 99% of 9 Harmful Contaminants - AO-MF-R - Image 1](https://m.media-amazon.com/images/I/41BopHKN9qL.jpg)
![AO Smith Basic Direct Connect Under Sink Replacement Filter for AO-MF System - Carbon Block Filter Reduces Up to 99% of 9 Harmful Contaminants - AO-MF-R - Image 2](https://m.media-amazon.com/images/I/71HdzIXFGjL.jpg)
![AO Smith Basic Direct Connect Under Sink Replacement Filter for AO-MF System - Carbon Block Filter Reduces Up to 99% of 9 Harmful Contaminants - AO-MF-R - Image 3](https://m.media-amazon.com/images/I/716hggFc5iL.jpg)
![AO Smith Basic Direct Connect Under Sink Replacement Filter for AO-MF System - Carbon Block Filter Reduces Up to 99% of 9 Harmful Contaminants - AO-MF-R - Image 4](https://m.media-amazon.com/images/I/41jf-avgXES.jpg)
![AO Smith Basic Direct Connect Under Sink Replacement Filter for AO-MF System - Carbon Block Filter Reduces Up to 99% of 9 Harmful Contaminants - AO-MF-R - Image 5](https://m.media-amazon.com/images/I/61JMcSrVwCL.jpg)

## Questions & Answers

**Q: How can i get replacement filters for my ao smith advanced under sink water filter system?  amazon says that it cannot ship them to california.**
A: Last purchased one in Sept 2022, shipped to CA; went to re-purchase today and Amazon indicated that it could not ship to my location (but could ship to other states).

**Q: Is this compatible with the aquasana claryum aq-mf-1?**
A: I have an Aquasana AQ-MF-1. The AO Smith replacement filter has worked as expected for the last 6 months - no leaks, same performance.

For what it's worth, AO Smith acquired Aquasana in 2016.

**Q: How do you know when the filter needs to be changed?**
A: We put a date on it when we replace it and just auto-replace every six months

**Q: Does this work to reduce pfas6 concentration?**
A: This filter system is only tested and certified for PFOS and PFOA reduction. (NSF P473)

Thank you,
AO Smith Customer Care

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***R on 17 January 2026*

Easy to install.

### ⭐⭐⭐⭐⭐ Review
*by S***N on 30 January 2026*

I used one for about a year before changing. Really improves the city drinking water. Does lower cold water pressure just a bit but I kinda expected that. On my second one now.

### ⭐⭐⭐⭐⭐ Review
*by G***I on 4 January 2026*

Easy to replace

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-04*