--- product_id: 165123625 title: "AO Smith 4.5\"x10\" 25 Micron Sediment Water Filter Replacement Cartridge - NSF/ANSI 42 Certified - For Whole House Filtration Systems - AO-WH-PREL-R" brand: "a. o. smith" price: "€ 81.97" currency: EUR in_stock: true category: "A. O. Smith" url: https://www.desertcart.pt/products/165123625-ao-smith-4-5x10-25-micron-sediment-water-filter-replacement store_origin: PT region: Portugal --- # Whole house coverage for 4+ people 25 micron ultra-fine sediment filtration Tool-free replacement every 6 months AO Smith 4.5"x10" 25 Micron Sediment Water Filter Replacement Cartridge - NSF/ANSI 42 Certified - For Whole House Filtration Systems - AO-WH-PREL-R **Brand:** a. o. smith **Price:** € 81.97 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your home’s water game—because every drop counts! ## Quick Answers - **What is this?** AO Smith 4.5"x10" 25 Micron Sediment Water Filter Replacement Cartridge - NSF/ANSI 42 Certified - For Whole House Filtration Systems - AO-WH-PREL-R by a. o. smith - **How much does it cost?** € 81.97 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/165123625-ao-smith-4-5x10-25-micron-sediment-water-filter-replacement) ## 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 - • **Effortless Maintenance:** Replace your filter in minutes—no plumber or tools required, keeping your routine hassle-free. - • **Long-Lasting Protection:** Optimized lifespan with 6-month replacement intervals, safeguarding your appliances and health. - • **Built for Busy Households:** Generous 4.5" diameter filter designed to support families of 4 or more with consistent performance. - • **Certified Quality Assurance:** NSF-certified genuine AO Smith filter ensures trusted contaminant removal and system longevity. - • **Crystal Clear Water, Every Tap:** Advanced 25 micron filtration removes invisible sediment for pristine water throughout your home. ## Overview The AO Smith 4.5"x10" 25 Micron Sediment Water Filter Replacement Cartridge is a certified, high-capacity filter designed for whole house systems serving 4+ people. It effectively reduces sediment smaller than the human eye can see, ensuring cleaner water from every tap. Easy to replace without professional help, this durable cartridge supports appliance longevity and optimal filtration performance with biannual replacements. ## Description Buy AO Smith 4.5"x10" 25 Micron Sediment Water Filter Replacement Cartridge - NSF/ANSI 42 Certified - For Whole House Filtration Systems - AO-WH-PREL-R: Water Coolers & Filters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Filter for use with: Whole House Filter System with Timer (AO-WH-PREL). Use only certified, genuine A. O. Smith filters for continued contaminant removal and system performance. - Longer lasting appliances - whole house filter system designed to reduce sediment from every tap. - IAPMO tested and certified to NSF/ANSI standard 42 for materials. 25 micron filtration - reduces sediment smaller than the human eye can see. - Replacements made easy - no plumber necessary. Replace filter every 6 months. Large capacity (4.5") filter is perfect for household sizes 4 or more people. - Includes one replacement filter. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07ZG34LWH | | Best Sellers Rank | #16,882 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #98 in Water Coolers & Filters | | Brand Name | A. O. Smith | | Compatible Water Purifier Models | A.O. Smith AO-WH-PREL | | Customer Reviews | 4.8 4.8 out of 5 stars (1,825) | | External Testing Certification | NSF 42 - Reduces aesthetic impurities | | Included Components | 4.5"x10" 25-Micron Sediment Filter | | Item Dimensions D x W x H | 4.5"D x 4.5"W x 9.5"H | | Item Weight | 0.5 Pounds | | Manufacturer | AO Smith | | Manufacturer Part Number | AO-WH-PREL-R | | Material Type | Polypropylene (PP) | | Model Number | AO-WH-PREL-R | | Number of Items | 1 | | Product Benefits | Reduces Sediment, Reduces Turbidity | | UPC | 193074743116 | | Unit Count | 1.0 Count | ## Product Details - **External Testing Certification:** NSF 42 - Reduces aesthetic impurities - **Item Weight:** 0.5 Pounds - **Material:** Polypropylene (PP) - **Product Benefits:** Reduces Sediment, Reduces Turbidity - **Product Dimensions:** 4.5"D x 4.5"W x 9.5"H ## Images ![AO Smith 4.5"x10" 25 Micron Sediment Water Filter Replacement Cartridge - NSF/ANSI 42 Certified - For Whole House Filtration Systems - AO-WH-PREL-R - Image 1](https://m.media-amazon.com/images/I/715cXODTkdL.jpg) ![AO Smith 4.5"x10" 25 Micron Sediment Water Filter Replacement Cartridge - NSF/ANSI 42 Certified - For Whole House Filtration Systems - AO-WH-PREL-R - Image 2](https://m.media-amazon.com/images/I/51NbYi1S8VL.jpg) ![AO Smith 4.5"x10" 25 Micron Sediment Water Filter Replacement Cartridge - NSF/ANSI 42 Certified - For Whole House Filtration Systems - AO-WH-PREL-R - Image 3](https://m.media-amazon.com/images/I/81Ynng-hoZL.jpg) ![AO Smith 4.5"x10" 25 Micron Sediment Water Filter Replacement Cartridge - NSF/ANSI 42 Certified - For Whole House Filtration Systems - AO-WH-PREL-R - Image 4](https://m.media-amazon.com/images/I/81S+fcNxwzL.jpg) ![AO Smith 4.5"x10" 25 Micron Sediment Water Filter Replacement Cartridge - NSF/ANSI 42 Certified - For Whole House Filtration Systems - AO-WH-PREL-R - Image 5](https://m.media-amazon.com/images/I/51rsyu8T8jL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: What material are they made of? is this better than the cheap pp (polypropylene) filters?** A: Has been effective for me in a difficult well water situation **Q: After u install this would your pressure of water drop ??** A: I have had no drop in water pressure with this whole house water filter. I used to have the carbon whole house water filter and I did have a drop in water pressure. I really like this whole house water filter, because it is white and it will show the contaminants in the water supply. **Q: Does the filter come with the O-Ring or should I buy that separately?** A: Buy one separately, I used the same one three filters in a row and the fourth time I couldn't make it fit. It stretched too much. **Q: What is the GPM range for the filter?** A: I don’t know the exact gallons a minute but I have a 4000 square-foot house for kids and the wife and I. We have had no problem running it in our household for 20 years ## Frequently Bought Together - AO Smith 4.5"x10" 25 Micron Sediment Water Filter Replacement Cartridge - For Whole House Filtration Systems - AO-WH-PREL-R - AO Smith 4.5"x10" 5 Micron Carbon Sediment Water Filter Replacement Cartridge - For Whole House Filtration Systems - AO-WH-PREL-RCP - AO Smith 4.5"x10" 25 Micron Carbon Sediment Water Filter Replacement Cartridge - For Whole House Filtration Systems - AO-WH-PREL-RC --- ## 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.pt/products/165123625-ao-smith-4-5x10-25-micron-sediment-water-filter-replacement](https://www.desertcart.pt/products/165123625-ao-smith-4-5x10-25-micron-sediment-water-filter-replacement) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-21*