--- product_id: 90323977 title: "RO-101S Reverse Osmosis UnderSink Water Filtration System l 4 Stage Filter" brand: "aquaphor" price: "€ 393.60" currency: EUR in_stock: true category: "Aquaphor" url: https://www.desertcart.ie/products/90323977-ro-101s-reverse-osmosis-undersink-water-filtration-system-l-4 store_origin: IE region: Ireland --- # 99% contaminant removal 50% smaller footprint 4-stage filtration system RO-101S Reverse Osmosis UnderSink Water Filtration System l 4 Stage Filter **Brand:** aquaphor **Price:** € 393.60 **Availability:** ✅ In Stock ## Summary > 💧 Compact power, pure refreshment—your kitchen’s hydration hero! ## Quick Answers - **What is this?** RO-101S Reverse Osmosis UnderSink Water Filtration System l 4 Stage Filter by aquaphor - **How much does it cost?** € 393.60 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/90323977-ro-101s-reverse-osmosis-undersink-water-filtration-system-l-4) ## Best For - aquaphor enthusiasts ## Why This Product - Trusted aquaphor brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Space-Savvy Design:** Takes up half the space of traditional RO systems—perfect for sleek, modern kitchens. - • **Appliance Lifesaver:** Eliminates water hardness, extending the life of your coffee machines, kettles, and irons. - • **Water & Energy Saver:** Saves up to 9,000 liters of water annually—eco-friendly hydration without compromise. - • **Mineral-Rich Refreshment:** Re-mineralizes water for a balanced, crisp taste ideal for coffee, baby formula, and cooking. - • **Ultra-Efficient Filtration:** Removes bacteria, viruses, heavy metals, PFAS, microplastics, and more with 99% effectiveness. ## Overview The AQUAPHOR RO-101S is a compact, 4-stage reverse osmosis under-sink water filtration system that removes up to 99% of contaminants while saving up to 9,000 liters of water annually. Featuring innovative space-saving design and advanced AQUALEN microfibre technology, it filters out harmful particles and restores essential minerals for great-tasting, healthy water. Ideal for modern homes, it also protects appliances by eliminating water hardness and supports easy annual maintenance with a click & turn cartridge system. ## Description Enjoy clean, great-tasting tap water with this compact reverse osmosis system. It removes up to 99% of contaminants and saves up to 9,000 liters annually. ## Features - INNOVATIVE TECHNOLOGY: The innovative RO-101S water tank takes up half the space under the sink than a traditional Reverse Osmosis system, saving up to 9,000 litres of water per year - and even works in houses water pressure at low as 1.9 bar of Dynamic Pressure. - WHATS IN THE BOX: The Aquaphor RO-101S system comes complete with a tap and 4 filters, 1 x K5 Pre-filter, 1x K2 treatment & filtration cartridge, 1 x R0-50S membrane cartridge and 1x K7M water conditioning and re-mineralisation cartridge. Replacement filters are available individually - or in convenient money saving multi-packs. - HOW IT WORKS: The K5 & K2 prefiltration cartridges use AQUALEN microfibre technology to filter out coarse particles like sand or clay - and the RO50S membrane eliminates bacteria, viruses, heavy metals,PFAS, microplastics, pesticides, lead, limescale, and chlorine. Finally, the K7M water conditioning and re-mineralisation cartridge adds back essential nutrients. - GREAT TASTING WATER WITH ESSENTIAL MINERALS RESTORED: Unlike basic RO systems that strip water flat, the RO-101S finishes with a K7M re-mineralisation stage — restoring the essential minerals for balanced, refreshing taste. Perfect for drinking straight, making baby formula, brewing coffee, or cooking. - LONGER APPLIANCE LIFE: RO-101 completely removes hardness from water, giving a longer life for coffee machines, kettles, irons and steamers - and means your humidifier will no longer leave a white dust on furniture. - SERVICE AND MAINTENANCE : AQUAPHOR recommend changing your cartridges once per year using the easy to do, click & turn cartridge replacement system. Replacement filters are available individually - or in convenient money saving multi-packs. - INSTALLATION : AQUAPHOR recommend engaging a plumber for the installation process - however, the AQUAPHOR RO-101S can be installed by a home owner competent in DIY. - REPLACEMENT CYCLE : AQUAPHOR recommend installing new filters every 12 months, and a new membrane every 24 months – however, if the taste of water output changes, please replace within this timeframe. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N4N1NUD | | Best Sellers Rank | 252,477 in DIY & Tools ( See Top 100 in DIY & Tools ) 167 in Under-Sink Filters | | Brand | AQUAPHOR | | Capacity | 5 litres | | Container Type | Faucet | | Country Of Origin | Estonia | | Customer Reviews | 4.0 4.0 out of 5 stars (77) | | Included Components | Under Sink System | | Installation Type | Under Sink | | Item Dimensions L x W x H | 37L x 19W x 42H centimetres | | Item Weight | 7.4 Kilograms | | LowerTemperature Range | 5 Degrees Fahrenheit | | Manufacture Year | 2019 | | Manufacturer | AQUAPHOR | | Manufacturer Part Number | 508761 | | Material Type | Plastic | | Maximum Flow Rate | 190 Litres Per Day | | Model Name | RO-101S | | Model Number | 101S | | Number of Items | 1 | | Other Special Features of the Product | Remineralization | | Purification Method | Reverse Osmosis | | Supported Water TDS Level Maximum (PPM) | 500 | | Unit Count | 1.0 count | | Upper Temperature Rating | 100 Degrees Celsius | ## Product Details - **Brand:** AQUAPHOR - **Capacity:** 5 litres - **Included components:** Under Sink System - **Installation type:** Under Sink - **Item weight:** 7.4 Kilograms - **Material:** Plastic - **Package information:** Faucet - **Product dimensions:** 37L x 19W x 42H centimetres - **Purification method:** Reverse Osmosis - **Special feature:** Remineralization ## Images ![RO-101S Reverse Osmosis UnderSink Water Filtration System l 4 Stage Filter - Image 1](https://m.media-amazon.com/images/I/61QTlWkKBPL.jpg) ## Available Options This product comes in different **Color** options. ## Frequently Bought Together - AQUAPHOR RO-101S Compact Reverse Osmosis Water Filter - Under Sink Filtration System - AQUAPHOR Crystal Replacement Filter Cartridge Set : K2 - K3 - K7 - AQUAPHOR A5Mg Added Magnesium replacement water filter cartridges, fits all A5 filter jugs, 1 pack, 350l per filter --- ## 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.ie/products/90323977-ro-101s-reverse-osmosis-undersink-water-filtration-system-l-4](https://www.desertcart.ie/products/90323977-ro-101s-reverse-osmosis-undersink-water-filtration-system-l-4) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-09-09*