--- product_id: 576525175 title: "A. O. Smith AOS-HERO-S2 Genuine Replacement | Stage 2 SmartFlow RO Membrane" brand: "a. o. smith" price: "Bs.3327" currency: BOB in_stock: true reviews_count: 8 url: https://www.desertcart.bo/products/576525175-a-o-smith-aos-hero-s2-genuine-replacement-stage-2 store_origin: BO region: Bolivia --- # 99% contaminant reduction NSF certified filtration SmartFlow tech for less water waste A. O. Smith AOS-HERO-S2 Genuine Replacement | Stage 2 SmartFlow RO Membrane **Brand:** a. o. smith **Price:** Bs.3327 **Availability:** βœ… In Stock ## Summary > πŸ’§ Upgrade your hydration game with the smartest RO membrane on the market! ## Quick Answers - **What is this?** A. O. Smith AOS-HERO-S2 Genuine Replacement | Stage 2 SmartFlow RO Membrane by a. o. smith - **How much does it cost?** Bs.3327 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/576525175-a-o-smith-aos-hero-s2-genuine-replacement-stage-2) ## 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 - β€’ **Certified Confidence:** Independently tested to NSF standards 42, 53, 58, and 401, ensuring industry-leading water purity and safety. - β€’ **SmartFlow Efficiency:** Advanced SmartFlow technology delivers more purified water with less waste, extending filter life and saving resources. - β€’ **Seamless Compatibility:** Designed exclusively for A.O. Smith AOS-HERO-CHR systems, guaranteeing optimal performance and easy installation. - β€’ **Pure Water, Zero Compromise:** Eliminates up to 99% of 90+ harmful contaminants including lead, pesticides, and microplastics for crystal-clear hydration. - β€’ **Annual Refresh, Maximum Performance:** Replace every 12 months or 500 gallons to maintain peak filtration and enjoy consistently fresh water. ## Overview The A. O. Smith AOS-HERO-S2 Stage 2 SmartFlow RO Membrane is a genuine replacement filter designed for the AOS-HERO-CHR reverse osmosis system. It reduces up to 99% of over 90 contaminants, including heavy metals, pesticides, and microplastics, certified to NSF standards 42, 53, 58, and 401. Featuring SmartFlow technology, it maximizes purified water output while minimizing waste and extends filter life. Replace annually or after 500 gallons to ensure optimal water quality and system performance. ## Description Full system reduces up to 99% of 90 harmful contaminants including lead, mercury, asbestos, pesticides, pharmaceuticals, chlorine, and more. Replacement filter for use with the A. O. Smith High-Efficiency Reverse Osmosis System (AOS-HERO-CHR). ## Features - Clean, Healthy Water - Reduce up to 99% of 90 contaminants including chlorine, chloramine, lead, pesticides, PFOA/PFOS, cysts, microplastics, and more from water in your house. - Advanced Filtration - HERO system is independently tested to NSF standards 42, 53, 58, and 401. - SmartFlow Technology - provides you with more pure water, less water waste, and longer filter life than the average RO system. - Stage 2 reverse osmosis replacement membrane for AOS-HERO-CHR (B0CCQF4QZX) systems. Replace every 12 months or 500 gallons whichever comes first. - Use only certified, genuine AO Smith replacement filter cartridge for continued contaminant removal and system performance. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0CCQCNDLK | | Best Sellers Rank | #18,262 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #131 in Replacement Under-Sink Water Filters | | Brand Name | A. O. Smith | | Compatible Water Purifier Models | A.O. Smith AOS-HERO-CHR | | Customer Reviews | 4.6 4.6 out of 5 stars (113) 4.6 out of 5 stars | | Eu Spare Part Availability Duration | 1 years | | External Testing Certification | NSF/ANSI Standard 58 | | Included Components | Reverse Osmosis Membrane Replacement | | Item Dimensions D X W X H | 3.25"D x 3.25"W x 12.9"H | | Item Highlight | For AOS-HERO RO System | WQA Certified | Reduces 99% of 90 Contaminants | Last 12-Months | | Item Weight | 1.8 pounds | | Manufacturer | A. O. Smith | | Manufacturer Part Number | AOS-HERO-S2 | | Material Type | RO Membrane | | Model Number | AOS-HERO-S2 | | Number Of Items | 1 | | Number Of Packs | 1 | | Product Benefits | Reduces TDS | | Set Name | Stage 2 | AOS-HERO-S2 | | Unit Count | 1 Count | | Upc | 811640030452 | ## Product Details - **Material:** Plastic - **Product Dimensions:** 3.25"D x 3.25"W x 12.9"H - **Item Weight:** 1.8 Pounds - **External Testing Certification:** NSF - **Product Benefits:** Reduces TDS ## Images ![A. O. Smith AOS-HERO-S2 Genuine Replacement | Stage 2 SmartFlow RO Membrane - Image 1](https://m.media-amazon.com/images/I/4149tfDV85L.jpg) ![A. O. Smith AOS-HERO-S2 Genuine Replacement | Stage 2 SmartFlow RO Membrane - Image 2](https://m.media-amazon.com/images/I/61s6x2N6t9L.jpg) ![A. O. Smith AOS-HERO-S2 Genuine Replacement | Stage 2 SmartFlow RO Membrane - Image 3](https://m.media-amazon.com/images/I/51UUpQhXuYL.jpg) ![A. O. Smith AOS-HERO-S2 Genuine Replacement | Stage 2 SmartFlow RO Membrane - Image 4](https://m.media-amazon.com/images/I/516iNh6HoSL.jpg) ![A. O. Smith AOS-HERO-S2 Genuine Replacement | Stage 2 SmartFlow RO Membrane - Image 5](https://m.media-amazon.com/images/I/61OewlqgQWL.jpg) ## Available Options This product comes in different **Set name** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ OEM PART READY TO INSTALL WHEN SCHEDULED *by on Reviewed in the United States November 19, 2025* They were hard to get for a while, but this was a new OEM part and is ready to install on schedule. I like the RO unit. These parts are expensive but very easy to install. ### ⭐⭐⭐⭐⭐ Aerosmith reverse osmosis water filters *by on Reviewed in the United States July 17, 2026* Excellent water filtration ### ⭐⭐⭐⭐⭐ Great filter great tasting water. *by on Reviewed in the United States June 7, 2026* This water filter worked perfectly. Made very β€œhard” very drinkable and coffee made through the whole AO Smith reverse osmosis process really tastes good. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.bo/products/576525175-a-o-smith-aos-hero-s2-genuine-replacement-stage-2](https://www.desertcart.bo/products/576525175-a-o-smith-aos-hero-s2-genuine-replacement-stage-2) --- *Product available on Desertcart Bolivia* *Store origin: BO* *Last updated: 2026-09-25*