--- product_id: 170412286 title: "A. O. Smith AO-US-RO-MEM Genuine Replacement | For Use with AO-US-RO-4000" brand: "a. o. smith" price: "€ 149.71" currency: EUR in_stock: true category: "A. O. Smith" url: https://www.desertcart.sk/products/170412286-a-o-smith-ao-us-ro-mem-genuine-replacement-use store_origin: SK region: Slovakia --- # 12-month lifespan 99% contaminant reduction IAPMO NSF/ANSI certified A. O. Smith AO-US-RO-MEM Genuine Replacement | For Use with AO-US-RO-4000 **Brand:** a. o. smith **Price:** € 149.71 **Availability:** ✅ In Stock ## Summary > 💧 Upgrade your hydration game with the ultimate RO membrane—because your water deserves the best. ## Quick Answers - **What is this?** A. O. Smith AO-US-RO-MEM Genuine Replacement | For Use with AO-US-RO-4000 by a. o. smith - **How much does it cost?** € 149.71 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/170412286-a-o-smith-ao-us-ro-mem-genuine-replacement-use) ## Best For - a. o. smith enthusiasts ## Why This Product - Trusted a. o. smith brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seamless Replacement:** Genuine A. O. Smith part designed specifically for AO-US-RO-4000 systems—no guesswork, no hassle. - • **Eco-Smart Installation:** Reuse your existing 90-degree elbow connection to reduce waste and keep your system running smoothly. - • **Long-Lasting Performance:** Engineered to deliver a full year of premium filtration without compromise. - • **Certified Safety Assurance:** IAPMO tested and NSF/ANSI Standard 58 certified for trusted, industry-leading water quality. - • **Pure Water, Pure Confidence:** Eliminates up to 99% of lead, fluoride, arsenic, chromium, nitrates, and more for crystal-clear hydration. ## Overview The A. O. Smith AO-US-RO-MEM is a genuine replacement reverse osmosis membrane designed exclusively for AO-US-RO-4000 systems. It reduces up to 99% of harmful contaminants including lead, fluoride, arsenic, chromium, and nitrates, ensuring safe, clean drinking water. Certified to NSF/ANSI Standard 58 by IAPMO, this membrane offers reliable performance for approximately 12 months. Note: It does not include the 90-degree elbow drain connector, which should be reused from the previous membrane. ## Description Buy A. O. Smith AO-US-RO-MEM Genuine Replacement | For Use with AO-US-RO-4000 | Replacement for AO-US-RO-MB-4000 | Replace Every 12 Months | Not for SmartFlow Systems: Replacement Under-Sink Water Filters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Replacement Reverse Osmosis Membrane for: The Clean Water Machine with RO & Microbial Boost (AO-US-RO-MB-4000). Not Compatible with SmartFlow Systems. - Reduces up to 99% of harmful contaminants including lead, fluoride, arsenic, chromium, nitrates, and more. - RO Membrane lasts approximately 1 year. 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. - IAPMO tested to NSF/ANSI Standard 58. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07PVZG45X | | Best Sellers Rank | #74,638 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #481 in Replacement Under-Sink Water Filters | | Brand Name | A. O. Smith | | Customer Reviews | 4.5 4.5 out of 5 stars (242) | | EU Spare Part Availability Duration | 1 years | | External Testing Certification | IAPMO, ANSI, NSF | | Item Dimensions D x W x H | 2.95"D x 2.85"W x 2.8"H | | Item Weight | 1.1 pounds | | Manufacturer | AO Smith | | Manufacturer Part Number | AO-US-RO-MB-4000 | | Material Type | Polycarbonate (PC) | | Model Number | AO-US-RO-MB-4000 | | Number of Items | 1 | | Product Benefits | Removes Lead, Reduces Fluoride, Removes Arsenic, Reduces Chromium, Reduces Nitrate | | UPC | 811640030230 | | Unit Count | 1 Count | ## Product Details - **External Testing Certification:** IAPMO, ANSI, NSF - **Item Weight:** 1.1 pounds - **Material:** Polycarbonate (PC) - **Product Benefits:** Removes Lead, Reduces Fluoride, Removes Arsenic, Reduces Chromium, Reduces Nitrate - **Product Dimensions:** 2.95"D x 2.85"W x 2.8"H ## Images ![A. O. Smith AO-US-RO-MEM Genuine Replacement | For Use with AO-US-RO-4000 - Image 1](https://m.media-amazon.com/images/I/7118X51-bAL.jpg) ![A. O. Smith AO-US-RO-MEM Genuine Replacement | For Use with AO-US-RO-4000 - Image 2](https://m.media-amazon.com/images/I/31blK6bUXtL.jpg) ![A. O. Smith AO-US-RO-MEM Genuine Replacement | For Use with AO-US-RO-4000 - Image 3](https://m.media-amazon.com/images/I/31YFVD3CrXL.jpg) ![A. O. Smith AO-US-RO-MEM Genuine Replacement | For Use with AO-US-RO-4000 - Image 4](https://m.media-amazon.com/images/I/41J17YeY98L.jpg) ![A. O. Smith AO-US-RO-MEM Genuine Replacement | For Use with AO-US-RO-4000 - Image 5](https://m.media-amazon.com/images/I/51fD+NrQmVL.jpg) ## Questions & Answers **Q: Can this replace the brita redi twist e filter?** A: I would imagine that Brita has a manual that specified what parts you need. This membrane is for a Reverse Osmosis system made by AO Smith. I doubt it would work on any other system. **Q: Will this filter work on a Culligan water aqua clear reverse osmosis** A: No it will not. It is brand specific. ## Frequently Bought Together - Reverse Osmosis Membrane Replacement for The AO-US-RO-MB-4000 - Not Compatible with SmartFlow Systems - Claryum®, Carbon, & Microbial Remineralizer Replacements for The AO-US-RO-MB-4000 - Not Compatible with SmartFlow Systems - Carbon & Claryum® Filter Replacements for the AO-US-RO-4000 - Not Compatible with SmartFlow Systems --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/170412286-a-o-smith-ao-us-ro-mem-genuine-replacement-use](https://www.desertcart.sk/products/170412286-a-o-smith-ao-us-ro-mem-genuine-replacement-use) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-08-24*