---
product_id: 17890274
title: "AQ-RO3-RO 1-Year RO Membrane Replacement Filter for AQ-RO-3 - Not Compatible with SmartFlow Systems"
brand: "aquasana"
price: "S$124"
currency: SGD
in_stock: true
reviews_count: 8
url: https://www.desertcart.sg/products/17890274-aq-ro3-ro-1-year-ro-membrane-replacement-filter-aq
store_origin: SG
region: Singapore
---

# 12-month lifespan Twist-off easy replacement NSF/ANSI certified purity AQ-RO3-RO 1-Year RO Membrane Replacement Filter for AQ-RO-3 - Not Compatible with SmartFlow Systems

**Brand:** aquasana
**Price:** S$124
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with trusted, twist-and-go purity!

## Quick Answers

- **What is this?** AQ-RO3-RO 1-Year RO Membrane Replacement Filter for AQ-RO-3 - Not Compatible with SmartFlow Systems by aquasana
- **How much does it cost?** S$124 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/17890274-aq-ro3-ro-1-year-ro-membrane-replacement-filter-aq)

## Best For

- aquasana enthusiasts

## Why This Product

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

## Key Features

- • **Fluoride Fighter:** Only proven reverse osmosis membrane to effectively remove fluoride and other tough toxins.
- • **Effortless Swap & Go:** No tools or hose disconnections needed—just twist off and replace in seconds.
- • **Eco-Friendly Clean Water:** Sustainably designed to improve water quality while reducing environmental impact.
- • **12 Months of Pure Hydration:** Long-lasting membrane ensures a full year of contaminant-free water.
- • **Certified Contaminant Crusher:** WQA tested and NSF/ANSI certified to reduce 89 harmful substances including lead and fluoride.

## Overview

The Aquasana AQ-RO3-RO Replacement Under Sink Water Filter is a certified reverse osmosis membrane designed for the OptimH2O system. It delivers 12 months of advanced filtration, reducing 89 contaminants including fluoride, lead, and arsenic. Engineered for easy twist-off replacement without disconnecting hoses, it ensures sustainable, high-quality drinking water straight from your tap.

## Description

Aquasana AQ-RO3-RO 1-Year RO Membrane Replacement Filter for AQ-RO-3 - Not Compatible with SmartFlow Systems

## Features

- Replacement for Reverse Osmosis Membrane (Stage 2) for the OptimH2O Reverse Osmosis plus Claryum (AQ-RO-3.55/56/62) and lasts for 12 months. Not compatible with SmartFlow systems.
- Water You Can Trust - Genuine, certified Aquasana replacements are WQA tested and certified to NSF/ANSI Standards.
- Peace of Mind - The OptimH2O Reverse Osmosis plus Claryum reduces 89 contaminants including fluoride, arsenic, lead, PFOA/PFOS, and more.
- Reverse Osmosis Membrane - The only proven water filtration method to effectively remove fluoride. Also reduces nitrates, nitrites, radium, and arsenic.
- Easy Filter Replacements - Expertly engineered for easy replacement. No need to disconnect hoses or water lines – simply twist off and replace.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | membrane |
| Product Dimensions | 3"D x 10.5"W x 3"H |
| External Testing Certification | WQA |
| Product Benefits | Improves water quality by reducing contaminants and features sustainable, eco-friendly design |
| Brand | Aquasana |
| EU Spare Part Availability Duration | 1 Years |
| UPC | 816749011678 |
| Global Trade Identification Number | 00816749011678 |
| Unit Count | 1.0 Count |
| Compatible Water Purifier Models | Aquasana AQ-RO-3 |
| Number of Items | 1 |
| Manufacturer | Aquasana Inc. |
| Part Number | AQ-RO3-RO |
| Item Weight | 1.08 pounds |
| Country of Origin | USA |
| Item model number | AQ-RO3-RO |
| Is Discontinued By Manufacturer | No |
| Size | 1 Count (Pack of 1) |
| Color | White |
| Style | Potable Water Filter |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Included Components | RO membrane |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** membrane
- **Product Dimensions:** 3"D x 10.5"W x 3"H
- **External Testing Certification:** WQA
- **Product Benefits:** Improves water quality by reducing contaminants and features sustainable, eco-friendly design
- **Brand:** Aquasana

## Images

![AQ-RO3-RO 1-Year RO Membrane Replacement Filter for AQ-RO-3 - Not Compatible with SmartFlow Systems - Image 1](https://m.media-amazon.com/images/I/51NRptHAvLL._AC_UL320_.jpg)
![AQ-RO3-RO 1-Year RO Membrane Replacement Filter for AQ-RO-3 - Not Compatible with SmartFlow Systems - Image 2](https://m.media-amazon.com/images/I/51NRptHAvLL._AC_UL480_FMwebp_QL65_.jpg)
![AQ-RO3-RO 1-Year RO Membrane Replacement Filter for AQ-RO-3 - Not Compatible with SmartFlow Systems - Image 3](https://m.media-amazon.com/images/I/51NRptHAvLL._AC_UL640_FMwebp_QL65_.jpg)
![AQ-RO3-RO 1-Year RO Membrane Replacement Filter for AQ-RO-3 - Not Compatible with SmartFlow Systems - Image 4](https://m.media-amazon.com/images/I/51NRptHAvLL._AC_UL800_FMwebp_QL65_.jpg)
![AQ-RO3-RO 1-Year RO Membrane Replacement Filter for AQ-RO-3 - Not Compatible with SmartFlow Systems - Image 5](https://m.media-amazon.com/images/I/51NRptHAvLL._AC_UL960_FMwebp_QL65_.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ If you are looking for a Brita USF-205 filter for the Brita USS-335 system, READ THIS...
*by R***S on August 7, 2024*

I have a Brita USS-335 RO system that uses two carbon filters and one RO filter. The Brita RO filter is a USF-205 and they are pretty much not available anymore. I found that the Aquasana filter AQ-RO3-RO is identical to the Brita USF-205 in every way *except* for one tiny detail. As shown in the photo, the boss next to the two water connections on the filter top is rotated 90 degrees relative to the Brita filter. This boss does not provide a critical function (my guess is that it is used to prevent brand interchangeability). Cut this boss off flush with the filter top, being careful not to nick or cut into the nearby post with the two black o-rings (see photo). This filter comes with the same flow restrictor as the Brita filter did.

### ⭐⭐⭐⭐⭐ Fits Culligan RO System
*by C***A on February 23, 2025*

Cut off the plastic tab on the top and it fits for Culligan RO system under sink.

### ⭐⭐⭐⭐⭐ With modification, works on DuPont ro
*by T***R on July 15, 2024*

These seem to be an exact fit except you will notice the turn tab is 90 degrees, but cut it off flat and it works just fine. Nice to have a way to keep them going.

## Frequently Bought Together

- Aquasana AQ-RO3-RO Replacement Under Sink Water Filter, 1 Count (Pack of 1), White
- Aquasana Replacement Filter Cartridges (Stages 1 & 3) for OptimH20 Reverse Osmosis Under Sink Water Filter System - Not Compatible with SmartFlow systems - AQ-RO3-R
- Aquasana AQ-RO3-RM Replacement Remineralizer for OptimH20 Reverse Osmosis Water Filter - Not Compatible with SmartFlow Systems

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-24*