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Direct Connect Under-Sink Water Filter System

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iSpring US21B Heavy Duty 2-Stage Undersink Water Filtration System with 10” x 4.5” GAC+KDF and CTO Carbon Block Filters
$183.99
$223.99
$46.99
$69.99
$54.99
$75.99
$62.99
$75.99
$51.99
$69.99
$70.99
$85.99
UVF8 LED UV Water Filter, Add-on Kit for Under Sink Water Filtration Systems
$129.99
iSpring US21B Heavy Duty 2-Stage Undersink Water Filtration System with 10” x 4.5” GAC+KDF and CTO Carbon Block Filters
iSpring US21B Heavy Duty 2-Stage Undersink Water Filtration System with 10” x 4.5” GAC+KDF and CTO Carbon Block Filters, 1” Ports (US21B)
  • [Heavy Duty Water Filter System] Made of quality material for all components and equipped with 10” x 4.5” filters, this heavy duty undercounter water filter system is designed to provide you and your loved ones with a continuous on-demand supply of refreshing water whenever your kitchen faucet is on. No waste water. No tank taking up your under sink space.
  • [10"x4.5" Filters] 1st stage KDF plus GAC carbon filter(FG15B-KS) and 2nd stage CTO carbon block filter(FC15B) can remove up to 99% of contaminants, including chlorine, lead, mercury, and many other heavy metals. They also tackle problems like turbidity, cloudiness, colors, bad taste, and odors(e.g. hydrogen sulfide that smells like rotten eggs). A true shield that protects you and your family from ingesting harmful chemicals or contaminants in your tap water.
  • [Steady Water Flow] Thanks to the system’s connection design and its 1” inlet and outlet ports, you will experience less waiting time when filling up your glasses, pitcher, coffee pot, or cooking pots as the peak water flow rate is up to 15 GPM. Based on the contaminant levels in source water and your water use, we suggest that you change your filters every 6-12 months for ideal filtration performance.
  • [Easy DIY Installation] Comes with two 24-inch DIRECT CONNECT hoses that connect the system to the existing under sink incoming water supply and the cold water line of your kitchen faucet. Unlike reverse osmosis systems, you don’t need to spend time drilling a hole on your countertop for a RO faucet. Tool free. No mess. System installation and filter cartridge replacement are a breeze!
  • [TDS Note] Please be noted that the system is NOT designed to reduce Total Dissolved Solids(TDS) removal and instead keeps essential minerals in your water. If you are interested in a filter that significantly reduces TDS, please consider our iSpring Reverse Osmosis (RO) systems RCC7 series or tankless RO500.
  • [Peace-of-Mind Support] We offer tech and CS support via phone and email from Atlanta, GA. Contact our responsive and professional team for product selection to suit your water filtration needs and after-sale support to fully enjoy your user experience. Now, and years to come, we will be right here and ready to help.
  • $183.99
    iSpring US15SL Direct-Connect Under Sink Water Filter, High Capacity Filtration, Fits Kitchen and Bathroom Faucets, Reduces Lead and Chlorine, 10”x2.5", White (US15SL)
  • Composite Filtration. iSpring US15SL under sink water filter system is a single-stage direct connect design with high capacity multi-layer filtration. US15SL's composite filter cartridge can effectively reduce lead, chlorine, smell, bad taste, heavy metals, sediment, and other large particles while keeping healthy minerals in your filtered water. The filtration does not lower TDS but will retain useful minerals.
  • Long Life Service & Multiple Use: The filter system has long service life for drinking, cooking, and cleaning. The composite multi-layer filter can filter water down to 3 microns. It works great with standard kitchen or bathroom faucets. Fits 1/2" NPT or 3/8" Comp threads with included adapters. Durable metal bracket and quality braided stainless steel hoses. Filter change is a breeze.
  • Innovative Design: The direct connect under the counter water filter has an easy DIY installation design. It only takes you a few minutes to finish installing. The filter replacement process is easy. With our new concise design and suitable size, the filter system can perfectly fit into any place at your house. The system should be connected only to a COLD WATER supply.
  • Cost-Effective: Average 8-12 month filter service life and only filter cartridge need to be changed. iSpring US15SL helps you save filter replacement costs to better protect the environment.
  • Leak-Free improvement: Our new version adapter and O-rings design prevent water leaks more effectively. US15SL treats water effectively with the high flow right with minimal pressure drop.
  • $46.99
    iSpring US15L Water Filter Under Sink, Up to 15,000 gal Capacity, Leak-free Direct Connect Under Sink Water Filter System for Kitchen, Easy DIY Installation, Reduce Odor Chlorine Heavy Metals, White (US15L)
  • IMPURITIES REDUCTION: This under sink water filter system is a single-stage direct connect multi-layer filtration offering high capacity (Up to 15K gal). The composite filter media includes CTO, GAC, CaSO3, KDF55, Polyphosphate, which can effectively reduce up to 99% of chlorine, odor, bad taste, heavy metals, sediment, and more while preventing scale build up. This under counter water filter does NOT lower TDS but will retain useful minerals instead.
  • TAKES UP 70% LESS SPACE: No extra faucet needed. The under sink water filter requires 70% less space than the traditional under sink filter. 20 inches tall and fits nicely under the standard kitchen or bathroom faucets. Fits 1/2" NPT or 3/8" Comp threads with included adapters. Mounting the system is not required, but it comes with the mounting template and quality braided stainless steel hoses.
  • 20-MIN INSTALLATION & 60-SEC MAINTENANCE: Our under-the-sink water filter system US15L only takes you approx. 20 mins to install. The kitchen water filter system has an 8-12 months service life. The filter replacement process is easy, taking just 60 seconds to change. Note: the under counter water filter should be connected to a COLD WATER supply only.
  • ECO-FRIENDLY: Only the filter cartridge needs to be replaced. Reduce plastic waste and save energy. Replace the plastic water bottles with this under sink water filter system and help save the earth. You and your family could save around 3,400 water bottles in a year, saving up to $2,600.
  • LEAK-FREE SYSTEM: The adapter and O-rings design prevent water leaks more effectively. US15L under sink filter treats water effectively with the high flow right with minimal pressure drop. Backed by a 1-year Manufacturer with lifetime support from Atlanta, GA, USA. For any issues or concerns, please contact us.
  • $54.99
    iSpring US15D Water Filter Under Sink, Up to 15,000 gal Capacity, Leak-free Direct Connect Under Sink Water Filter System for Kitchen, Easy DIY Installation, Reduce Odor Chlorine Heavy Metals, Black (US15D)
  • IMPURITIES REDUCTION: This under sink water filter system is a single-stage direct connect multi-layer filtration offering high capacity (Up to 15K gal). The composite filter media includes CTO, GAC, CaSO3, KDF55, Polyphosphate, which can effectively reduce up to 99% of chlorine, odor, bad taste, heavy metals, sediment, and more while preventing scale build up. This under counter water filter does NOT lower TDS but will retain useful minerals instead.
  • TAKES UP 70% LESS SPACE: No extra faucet needed. The under sink water filter requires 70% less space than the traditional under sink filter. 20 inches tall and fits nicely under the standard kitchen or bathroom faucets. Fits 1/2" NPT or 3/8" Comp threads with included adapters. Mounting the system is not required, but it comes with the mounting template and quality braided stainless steel hoses.
  • 20-MIN INSTALLATION & 60-SEC MAINTENANCE: Our under-the-sink water filter system US15L only takes you approx. 20 mins to install. The kitchen water filter system has an 8-12 months service life. The filter replacement process is easy, taking just 60 seconds to change. Note: the under counter water filter should be connected to a COLD WATER supply only.
  • ECO-FRIENDLY: Only the filter cartridge needs to be replaced. Reduce plastic waste and save energy. Replace the plastic water bottles with this under sink water filter system and help save the earth. You and your family could save around 3,400 water bottles in a year, saving up to $2,600.
  • LEAK-FREE SYSTEM: The adapter and O-rings design prevent water leaks more effectively. US15L under sink filter treats water effectively with the high flow right with minimal pressure drop. Backed by a 1-year Manufacturer with lifetime support from Atlanta, GA, USA. For any issues or concerns, please contact us.
  • $62.99
    iSpring US15SD Direct-Connect Under Sink Water Filter System, High Capacity Filtration, Fits Kitchen and Bathroom Faucets, Reduces Lead and Chlorine, 10" x 2.5", Black (US15SD)
  • Composite Filtration. iSpring US15SD under sink water filter system is a single-stage direct connect design with high capacity multi-layer filtration. US15SD's composite filter cartridge can effectively reduce lead, chlorine, smell, bad taste, heavy metals, sediment, and other large particles while keeping healthy minerals in your filtered water. The filtration does not lower TDS but will retain useful minerals.
  • Long Life Service & Multiple Use: The filter system has long service life for drinking, cooking, and cleaning. The composite multi-layer filter can filter water down to 3 microns. It works great with standard kitchen or bathroom faucets. Fits 1/2" NPT or 3/8" Comp threads with included adapters. Durable metal bracket and quality braided stainless steel hoses. Filter change is a breeze.
  • Innovative Design: The direct connect under the counter water filter has an easy DIY installation design. It only takes you a few minutes to finish installing. The filter replacement process is easy. With our new concise design and suitable size, the filter system can perfectly fit into any place at your house. The system should be connected only to a COLD WATER supply.
  • Cost-Effective: Average 8-12 month filter service life and only filter cartridge need to be changed. iSpring US15SD helps you save filter replacement costs to better protect the environment.
  • Leak-Free improvement: Our new version adapter and O-rings design prevent water leaks more effectively. US15SD treats water effectively with the high flow right with minimal pressure drop.
  • $51.99
    iSpring US15UF 0.01μm Water Filter for Sink, 15K Gal Capacity, Leak-Free Direct Connect Under Sink Water Filter System for Kitchen, Ultra Filtration, Reduce Odor, Chlorine, Heavy Metals, Black (US15UF)
  • 【IMPURITIES REDUCTION】The iSpring Direct Connect Undersink Water Filtration System uses innovative multistage filtration, offering high capacity (Up to 15k Gal). With a filtration accuracy of 0.01 μm, the Ultrafiltration membrane filters out iṁpurities larger than 0.01 μm. The composite filter media includes Activated carbon, Polyphosphate, CTO, GAC, CaSO3, KDF55, which can effectively reduce up to 99% of chlorine, odor, bad taste, heavy metals, sediment, and more while preventing scale build up.
  • 【TAKES UP 70% LESS SPACE】 No extra faucet needed. The under sink water filter requires 70% less space than the traditional under sink filter. 20 inches tall and fits nicely under the standard kitchen or bathroom faucets. Fits 1/2" NPT or 3/8" Comp threads with included adapters. Mounting the system is not required, but it comes with the mounting template and quality braided stainless steel hoses.
  • 【20-MIN INSTALLATION & 60-SEC MAINTENANCE】 Our Under Sink Water Filter System US15UF only takes you approx. 20 mins to install. The kitchen water filter system has an 8-12 months service life. The filter replacement process is easy, taking just 60 seconds to change. Note: the under counter water filter should be connected to a COLD WATER supply only.
  • 【ECO-FRIENDLY】Only the filter cartridge needs to be replaced. Reduce plastic waste and save energy. Replace plastic water bottles with this under sink water filter system and help preserve the earth. You and your family would no longer need to buy 3,400 water bottles a year, which is a cost savings of around $2,600. This is the best under the counter water filter system for your kitchen.
  • 【LEAK-FREE SYSTEM】The adapter and O-rings design prevent water leaks more constructively. US15UF under sink filter treats water effectively with the high flow right with minimal pressure drop. Backed by a 1-year Manufacturer with lifetime support from Atlanta, GA, USA.
  • $70.99
    UVF8 LED UV Water Filter, Add-on Kit for Under Sink Water Filtration Systems
    iSpring UVF8 LED UV Water Filter, Add-on Kit for Under Sink Water Filtration Systems, Mercury-Free, Stainless steel (UVF8)
  • Innovative and Modern LED Technology: The UV-C LED is an innovative technology for providing clean and effective water treatment. Compared to traditional UV light, it does not contain mercury and will not emit odors by producing ozone. The on/off cycles do not impact the life of the LED, so the UVF8 system can turn the system on and off as needed without worrying about reducing its lifespan. UVF8 LED technology is more compact and does not transfer heat to water, making it a more sustainable option.
  • Keep your water Safe with an Efficient System Add-on: The iSpring UVF8 LED UV water filter effectively cleans your water from harmful substances. The wavelength of UV-C light can quickly alter the molecular structure of harmful substances, rendering them inactive and unable to reproduce. Unlike traditional mercury-vapor lamps, it does not require a warm-up time and can achieve 99.9% success in eliminating harmful contaminants in just 2 seconds.
  • Intelligent Operation with Minimal Maintenance: This smart modern UVF8 UV filter requires minimum attention, as it comes with a built-in intelligent flow sensor and a delayed timer. The smart flow sensor component monitors water flow and only turns on the UV light when water passes by. This system has the service life of the lamp to up to 7000 hours, so you need not replace the system or the bulb for decades.
  • Wide Range of Working Conditions with DIY Installation: The iSpring UVF8 LED UV Water Filter is user-friendly and easy to install, with a ¼" quick-fitting, making it a breeze to add to your existing under sink water system. You can enjoy a DIY installation without special tools or plumbing services. iSpring UVF8 LED UV Water Filter is an excellent choice to ensure your drinking water is free of harmful contaminants. Whether installing it in your kitchen, RV, boat, or other locations, this add-on kit will provide you with complete peace of mind and high-quality water you can trust.
  • Strong Limited Lifetime warranty: The longevity and durability of the UVF8 UV filter have been ensured by the strong build-up of the product. The lifetime warranty also adds peace of mind, covering 100% of defects and failures (excluding accidental damage or improper usage). This warranty ensures that you can use the iSpring UVF8 with confidence, knowing it has been built to last and any issues that may arise will be covered.
  • $129.99
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