---
product_id: 260028249
title: "Membrane & Remineralizer Replacements"
brand: "ao smith"
price: "¥49409"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/260028249-membrane-and-remineralizer-replacements
store_origin: JP
region: Japan
---

# 99% contaminant removal 12-month filter lifespan NSF Standard 58 certified Membrane & Remineralizer Replacements

**Brand:** ao smith
**Price:** ¥49409
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with AO Smith’s premium RO membrane & remineralizer!

## Quick Answers

- **What is this?** Membrane & Remineralizer Replacements by ao smith
- **How much does it cost?** ¥49409 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/260028249-membrane-and-remineralizer-replacements)

## 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

- • **Effortless Upkeep:** Easy DIY replacement—no plumber needed—keeping your water fresh without the hassle or extra costs.
- • **Long-Lasting Performance:** Filters last approximately 12 months, ensuring consistent purity and taste without frequent replacements.
- • **Mineral Boost for Wellness:** Remineralizer restores essential calcium, magnesium, and potassium lost during filtration, supporting your daily health goals.
- • **Certified Quality Assurance:** NSF Standard 58 certification guarantees trusted performance and safety for your family’s drinking water.
- • **Pure Water, Pure Confidence:** Reverse Osmosis eliminates up to 99% of harmful contaminants including lead, fluoride, and chromium for crystal-clear hydration.

## Overview

AO Smith Membrane & Remineralizer Replacements are designed for the Clean Water Filter with RO Boost system, delivering up to 99% contaminant removal through advanced reverse osmosis. Certified to NSF Standard 58, these filters restore essential minerals lost in filtration, ensuring healthier, better-tasting water. With a 12-month lifespan and easy DIY installation, they offer a hassle-free upgrade to your home’s water quality.

## Description

Membrane & Remineralizer Replacements

## Features

- Replacement RO Membrane & Remineralizer for: The Clean Water Filter with RO Boost (AO-US-RO-4000)- Easy replacement, no plumber necessary.
- Reverse Osmosis reduces up to 99% of harmful contaminants including lead, fluoride, asbestos, chromium, and nitrates.
- RO system with Remineralization - returns the healthy minerals lost in the reverse osmosis process - such as calcium, magnesium, and potassium.
- RO Membrane and Remineralizer last approximately 12 months - Use only certified, genuine A. O. Smith replacement filters for continued contaminant removal and system performance.
- NSF certified to standard 58. Does not include 90 degree elbow connection to drain. Please use existing 90 degree elbow to connect the remineralizer to the drain line. Do NOT discard the connector with the old membrane.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | AO Smith |
| Color | Multicolor |
| Product Dimensions | 5.08 x 5.08 x 26.67 cm; 830.07 g |
| Material | Plastic |
| Item Weight | 830 g |

## Product Details

- **Material:** Plastic
- **Product dimensions:** 5.1D x 5.1W x 26.7H centimeters
- **Item weight:** 1.83 Pounds
- **External testing certification:** NSF
- **Product benefits:** Removes Pollutants

## Images

![Membrane & Remineralizer Replacements - Image 1](https://m.media-amazon.com/images/I/71hiR4iQ9yL.jpg)

## Questions & Answers

**Q: Are these the only filters i need to change?**
A: No. I believe there’s 4 filters total. Two are fairly frequently and the other two are yearly I believe

**Q: what is in the remineralizer? I cannot find on any website describing the contents of it.**
A: Makes the water taste like Arowhead bottled water. I don't like it.

**Q: Does the remineralizer in this product include the microbial filter, as shown on the cover image?**
A: Yes it does but you will have to buy the two Claryum Filters

**Q: Is that 24 hour purge correct?  That is not a good idea if you're on a well system.  I'm glad I saw this before purchasing the system.**
A: Instructions with the filters say let the tank fill after replacing the filters, drain the tank and refill. Should be good to go then.

## Frequently Bought Together

- Membrane & Remineralizer Replacements for the AO-US-RO-4000 - Not Compatible with SmartFlow Systems
- Carbon & Claryum® Filter Replacements for the AO-US-RO-4000 - Not Compatible with SmartFlow Systems
- Claryum®, Carbon, & Microbial Remineralizer Replacements for the AO-US-RO-MB-4000 - Not Compatible with SmartFlow Systems

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**Shop now:** [https://www.desertcart.jp/products/260028249-membrane-and-remineralizer-replacements](https://www.desertcart.jp/products/260028249-membrane-and-remineralizer-replacements)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-24*