--- product_id: 253575606 title: "FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5”" brand: "ispring" price: "€ 179.44" currency: EUR in_stock: true reviews_count: 5 category: "I Spring" url: https://www.desertcart.hr/products/253575606-fc25b-whole-house-water-filter-cto-carbon-block-20-x store_origin: HR region: Croatia --- # 20,000 gallons filter life 99% chlorine removal 20” x 4.5” standard size FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5” **Brand:** ispring **Price:** € 179.44 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your home’s water game — because your family deserves the freshest flow! ## Quick Answers - **What is this?** FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5” by ispring - **How much does it cost?** € 179.44 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/253575606-fc25b-whole-house-water-filter-cto-carbon-block-20-x) ## Best For - ispring enthusiasts ## Why This Product - Trusted ispring brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Certified Safety & Quality:** NSF/ANSI tested and certified for your health and peace of mind. - • **Seamless Fit, Maximum Flow:** Standard 20” x 4.5” size ensures easy installation with minimal impact on water pressure (up to 15 GPM). - • **Pure Water, Pure Confidence:** Removes up to 99% of chlorine, odors, and harmful chemicals for fresh, clean water throughout your home. - • **Premium Coconut Carbon Block:** High-quality activated carbon delivers superior filtration efficiency and longer filter life. - • **Lifetime Support, Local Service:** Register for lifetime free tech support from a dedicated U.S.-based team ready to assist you anytime. ## Overview The iSpring FC25B Whole House Water Filter features a 20” x 4.5” CTO carbon block cartridge that removes up to 99% of chlorine, taste, odor, and contaminants while maintaining healthy minerals. Designed for standard housings, it supports flow rates up to 15 GPM and lasts for 20,000 gallons. Made from premium coconut shell activated carbon and NSF/ANSI certified, it ensures top-tier filtration quality. Backed by lifetime free U.S.-based tech support, it’s the smart choice for millennial professionals seeking reliable, clean water throughout their home. ## Description Product Highlights - Individually Wrapped - Dimensions: Length = 20", O. D. = 4. 5", I. D. = 1 1/8" - Flow Rate: 5-7 Gpm - Filter Life: 20, 000 Gallons - Operating Temperature: 40°F~125°F (4°C~52°C) - Max. Operating Pressure: 60 Psi - Removes Dust, Particles, And Rust - Good For Water Filters And Aquariums. Applications - Food And Beverages - Reverse Osmosis Pre Filtration - Oil And Gas - Fine Chemicals - Electronics - Metal Finishing - Pulp And Paper Why Purchase From Us - Spring - Usa Legendary Brand Of Water Filters - Nsf Certified Product To Ensure Quality, Material Safety And Your Health - Free Tech Support Before And After Sale From Atlanta, Georgia - Ship From Atlanta Warehouse Daily. Only 2-Day Transit Time For Most States In Eastern Time Zone And Part Of Central Time Zone (Including Texas). Review: Buena calidad, algo caro pero adecuado para filtrar el agua de toda la casa Review: Arrived in good condition ## Features - Protect Your Family and Household Appliance from Chlorine and More: Say goodbye to smelly, bad tasting water! The FC25B carbon block filter is specially designed to remove up to 99% of chlorine from water as well as taste and odor compounds, cloudiness, and chemicals. - Standard Size: Our FC25B whole house water filter fits standard housings that requires 20” x 4.5” water filter cartridges, including brand name models. The 20” x 4. 5” water filter cartridge has a minimum impact on water flow (up to 15 GPM) and require minimum maintenance - Top-Notch Quality: Our FC25B CTO Carbon Block filters are made of high-quality coconut shell activated carbon for maximum filtration efficiency and filter life. Activated carbon is an effective adsorbent because it is a highly porous material and provides a large surface area to which contaminants may adsorb. This whole house water filter is tested by an independent third-party to meet NSF/ANSI standards. - Peace of Mind Customer Service: Register online to activate your manufacturer and life-time free tech support from U. S. local support team. We stand behind our products and if you encounter any problems with any of our water filters please reach out to us immediately. We are happy to help! - Please Note: The water filter cartridges are individually wrapped to ensure freshness. Please unwrap the cartridges before use. Unlike an RO membrane, the filters don’t reduce Total Dissolved Solids (TDS), and instead keeps healthy minerals in your water. If you are interested in a filter that removes TDS, consider our iSpring Reverse Osmosis (RO) systems. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01M1197LW | | Best Sellers Rank | #125,565 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #397 in Replacement Water Filters | | Brand | iSpring | | Capacity | 15 Gallons per Minute | | Color | Gray | | Customer Reviews | 4.6 4.6 out of 5 stars (835) | | Date First Available | 27 December 2016 | | Item Weight | 2.36 Kilograms | | Material | Carbon Block | | Model Number | FC25B | | Product Dimensions | 11.43 x 11.43 x 50.8 cm; 2.36 kg | | Special Features | ro | ## Product Details - **Brand:** iSpring - **Capacity:** 15 Gallons per Minute - **Material:** Carbon Block - **Product dimensions:** 15.2L x 15.2W x 55.9H centimeters - **Special features:** ro ## Images ![FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5” - Image 1](https://m.media-amazon.com/images/I/61y2R3tF6qL.jpg) ## Questions & Answers **Q: We are looking to install this in a seasonal cabin, can this be winterized?** A: Hi Cate, This unit should be protected from direct sunlight or freezing temperature. Depending on the environment in the winter, the housings might become damaged. Please contact us with more details so we can better assist you. iSpring Water Systems 678-261-7611 support@ispringfilter.com **Q: I received this whole house filter and one of the cartridges is broken model fc25b. can i get a replacement of this broken cartridge?** A: allfilters.com I used iSpring for a while and then the types of filters ordered was so confusing......and its all made in China.......unlike advertised. So I switched to allfilters....now keep in mind that they don’t send one at a time....but the price difference, the nonconfusion, sent by USPS and customer support won me over. ALL MADE IN THE USA! Allfilters also sells the canisters. When ordering filters go by the size ei: 4 1/2” x 20” **Q: Do you still need a water softener with this if hardness is 250 ppm?** A: Hi there, It's optional but would help p[rolong the life of the filters if you install one. We usually recommend a water softener with TDS higher than 700 PPM. Please let us know if you have other concerns. Stay safe! iSpring Water Systems, LLC **Q: What pressure gauge is recommended to install pre and post filter that will work with 3/4" PEX supply line?** A: I use the one on a spin down pre filter and a 3/4” shark bite with gauge post filter ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by C***N on 11 September 2025* Buena calidad, algo caro pero adecuado para filtrar el agua de toda la casa ### ⭐⭐⭐⭐⭐ Review *by E***4 on 21 June 2025* Arrived in good condition ### ⭐⭐⭐⭐⭐ Review *by M***I on 20 September 2019* As advertised ## Frequently Bought Together - iSpring FC25B NSF Certified High Capacity Big Blue Whole House Water Filter CTO Carbon Block, 4.5" x 20" - iSpring FM25B 4.5" x 20" Big Blue High Capacity Iron Manganese Reducing Replacement Water 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.hr/products/253575606-fc25b-whole-house-water-filter-cto-carbon-block-20-x](https://www.desertcart.hr/products/253575606-fc25b-whole-house-water-filter-cto-carbon-block-20-x) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-14*