iSpring
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- 1/4 IN. quick fitting for both ends.
- Push-fit technology
- Quick disconnection without the need for tools
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- Push-fit connections for 1/4" tubing.
- Suitable for use with 1/4" Pex, CPVC, and copper pipe.
- Lead free.
- 1/4" x 1/4" O.D
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- Made of 100% Melt-Blown Polypropylene, multi-layer filtration
- 2.5" DIA x 10" Length
- 20 Micron rated
- Fits 10" filter housings
- Tested by independent third-party to meet NSF/ANSI Standard. This filter can also be used for pool and hottub.<
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- Stainless steel mesh filter screen rated at 50 Micron. Double threads on both ends: 1 inch MNPT and 3/4 inch FNPT, 1/4" flush out fitting included. WSP series can be used for waste water treatment by spin down the sediment.
- Flushable and reusa
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- [Protect Your Family and Household Appliance from Sediment, Chlorine, and More] Say goodbye to smelly, bad tasting water! Our system removes up to 99% of chlorine from water as well as sediment, rust, pesticides, herbicides, industrial solvents, an
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- [Protect Your Family and Household Appliance from Sediment, Chlorine, and More] Say goodbye to smelly, bad tasting water! Our system removes up to 99% of chlorine from water as well as sediment, rust, pesticides, herbicides, industrial solvents, an
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- Stainless steel mesh filter screen with a pore size of 50 microns. The ideal first line of defense for finer filters, or expensive plumbing appliances. WSP series can be used for waste water treatment by spin down the sediment.
- Includes Siliph
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- 【Two-Stage Effective Filtration】The WGB22B whole house water filter system uses a 1st-stage premium 5-micron polypropylene sediment filter (FP25B) to capture dirt, sand, silt, dust, rust, and scale particles, extending the life of the 2nd-stage
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- Stainless steel mesh filter screen rated at 50 Micron. Double threads on both ends: 1 inch MNPT and 3/4 inch FNPT, 1/4" flush out fitting included. WSP series can be used for waste water treatment by spin down the sediment.
- Two 12 inch 3/4'' M
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- Two buttons: HOLD and ON/OFF
- Hold Function -Saves measurements for convenient reading and recording.
- Auto off function -Turns off meter after minutes of inactivity.
- Measurement Range: 0-9990 ppm. From 0-
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- [Flushable and Reusable] The whole house spin down sediment water filter is used to create a multi-layer gradient filtration system taking considerable workload off finer filters that follow it and result in a longer filter life. As a larger, upgra
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- As a larger, upgraded version of WSP series, WSP50B filters out particulate, sediment, rust, and floating objects. WSP series can be used for waste water treatment by spin down the sediment.
- Flushable and reusable, used to create a multi-layer
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- Maximum 33-Stage Filtration Capacity: Featuring a scientifically formulated process of 12 different premium quality filtration media in 15 stages iSpring SF series high output shower filters quickly remove up to 99% of chlorine, sediment, hydrogen
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- 6-Stage reverse osmosis water filtration. Capable of removing up to 99% of over 1,000 contaminants, including PFAS, lead (removes up to 98% of lead), chlorine, fluoride, arsenic, asbestos, calcium, sodium, and more. Comes with US made filters and R
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- Removes Salt from Softened Water – Water softeners replace hardness minerals with sodium or potassium, which can make softened water less ideal for drinking. Pairing your softener with a point-of-use reverse osmosis (RO) system removes the added
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- Durable Whole House Protection: The WSP50ARJ-BP prefilter blocks sediment, sand, rust, and dirt down to 50 microns, protecting your plumbing, water heaters, and appliances from clogging and damage.
- Advanced Self-Cleaning Feature: Equipped
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- Targeted Contaminant Reduction: Reduces sediment, dirt, sand, rust, chlorine, and odor to improve taste; removes up to 99% lead and reduces arsenic (III & V), mercury, and cadmium.
- 3-Stage High-Efficiency Design: Built with a sedime
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- Advanced 4-Stage Filtration: The iSpring CU-A4 effectively reduces chlorine, lead, heavy metals, VOCs, and harmful contaminants, delivering clean and safe drinking water straight from your tap.
- Improved Taste & Odor: Enjoy fresh, crisp wa
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- Advanced 5-Stage Filtration – Removes up to 99% of over 1,000 harmful contaminants including chlorine, lead, PFAS, microplastics, and heavy metals for safe, fresh water every time.
- Convenient Countertop RO System – Enjoy pure, great-t
LittleWell 504KX10 1/4"x 1/4" Quick Connect Push Fitting Elbow Tube Connector, 0404UEX10 504KX10, Pack of 10 (0404UEX10 (504KX10))
1/4 IN. quick fitting for both ends. Push-fit technology Quick disconnection without the need for tools
LittleWell 154KX10 1/4" Inline Quick Connect Fitting, 0404UCX10 154KX10, Pack of 10 (0404UCX10 (154KX10))
Push-fit connections for 1/4" tubing. Suitable for use with 1/4" Pex, CPVC, and copper pipe. Lead free. 1/4" x 1/4" O.D
iSpring FP120X25 20 Micron Box of 25 Standard 10"x2.5" Sediment Water Filter Replacement (FP120X25)
Made of 100% Melt-Blown Polypropylene, multi-layer filtration 2.5" DIA x 10" Length 20 Micron rated Fits 10" filter housings Tested by independent third-party to meet NSF/ANSI Standard. This filter can also be used for pool and hottub.
iSpring WSP50GR ACPF12MPT12x2 Reusable Spin Down Sediment Water Filter (50 Micron w/Scraper & 360°Head) w/Push-Fit Plumbing Fittings (WSP50GR ACPF12MPT12x2)
Stainless steel mesh filter screen rated at 50 Micron. Double threads on both ends: 1 inch MNPT and 3/4 inch FNPT, 1/4" flush out fitting included. WSP series can be used for waste water treatment by spin down the sediment.
Flushable and reusable, takes the considerable workload off finer filters that follow behind it; helps create a multi-layer gradient filtration system for better filtration results and longer filter life.
System can be installed in any direction thanks to the 360° rotatable head connection.
The steel mesh filter cartridge and housing can be easily cleaned by rotating the scraper, saving time and effort on routine maintenance.
Comes with Two 3/4" Lead-free Push-Fit Plumber Fittings for connecting standard PEX, PVC, CPVC and Copper pipes; Flush out valve has garden hose barb fitting
iSpring WCB32O+AHPF12MNPT12X2 Whole House 3-Stage Water Filter System with Fine Sediment and Carbon Block w/ 3/4 inch Push-Fit Hose Connectors and Ball Valve (WCB32O+AHPF12MNPT12X2)
[Protect Your Family and Household Appliance from Sediment, Chlorine, and More] Say goodbye to smelly, bad tasting water! Our system removes up to 99% of chlorine from water as well as sediment, rust, pesticides, herbicides, industrial solvents, and various other contaminants. This system is installed at the main water supply line in order to treat all the water in your home.
[DIY Installation and Maintenance] Refer to our manual and our helpful YouTube videos for DIY installation. 3/4 inch NPT inlet/outlet, water flow: up to 12 GPM. The cartridges are individually wrapped to ensure freshness. Please unwrap the cartridges before use.
The first stage polypropylene sediment filter is able to achieve filtration down to 5 microns. The second and third stage CTO Carbon Block filters are made of coconut shell carbon to increase filtration efficiency and extend filter life. Both are tested by an independent third-party to meet NSF/ANSI standards. Both filters have a capacity of 30,000 gallons of water, enough to supply a family of four with clean water for half a year.
[Peace of Mind Customer Service] Register online to activate your extended 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 products please reach out to us immediately. We are happy to help!
[Please Note] Unlike an RO system, this system will NOT reduce Total Dissolved Solids (TDS). If you are interested in a filter that removes TDS consider our iSpring Reverse Osmosis systems.
iSpring WCB32C+AHPF12MNPT12X2 Whole House 3-Stage Water Filter System with Fine Sediment and Carbon Block w/ 3/4 inch Push-Fit Braided Hose (WCB32C+AHPF12MNPT12X2)
[Protect Your Family and Household Appliance from Sediment, Chlorine, and More] Say goodbye to smelly, bad tasting water! Our system removes up to 99% of chlorine from water as well as sediment, rust, pesticides, herbicides, industrial solvents, and various other contaminants. This system is installed at the main water supply line in order to treat all the water in your home.
[DIY Installation and Maintenance] Refer to our manual and our helpful YouTube videos for DIY installation. With a clear housing for the first stage, you can easily tell when to change the filter. Two 12" push-fit hoses are included for hassle-free installation to any 3/4" pipes like Copper, PEX, or CPVC pipes with no welding or glue needed. A removal tool is also included if you need to disconnect the system from the pipes.
[The first stage polypropylene sediment filter is able to achieve filtration down to 5 microns. The second and third stage CTO Carbon Block filters are made of coconut shell carbon to increase filtration efficiency and extend filter life. Both are tested by an independent third-party to meet NSF/ANSI standards. Both filters have a capacity of 30,000 gallons of water, enough to supply a family of four with clean water for half a year.
[Peace of Mind Customer Service] Register online to activate your extended 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 products please reach out to us immediately. We are happy to help!
[Please Note] Unlike an RO system, this system will NOT reduce Total Dissolved Solids (TDS). If you are interested in a filter that removes TDS consider our iSpring Reverse Osmosis (RO) systems. The cartridges are individually wrapped to ensure freshness. Please unwrap the cartridges before use.
iSpring WSP50SL+AHPF12MNPT12X2 Reusable Spin Down Sediment Water Filter with Siliphos and Push Fit Ball Valve (WSP50SL+AHPF12MNPT12X2)
Stainless steel mesh filter screen with a pore size of 50 microns. The ideal first line of defense for finer filters, or expensive plumbing appliances. WSP series can be used for waste water treatment by spin down the sediment.
Includes Siliphos to help prevent scale and stop corrosion, greatly extending the life of your plumbing fixtures. It is recommended that the filter to be replaced every 3-6 months to prevent scale from building up.
Flushable w/ various micron size options available; helps create a multi-layer gradient filtration system for better filtration results and longer filter life.
See through housing offers easy visual monitoring; lead-free brass body with 1-year warranty
Comes with Two 3/4 inch Push-Fit x 3/4 inch Male NPT braided stainless steel water hose connector with built-in Ball Valve for connecting standard PEX, PVC, CPVC and Copper pipes
iSpring WGB22B AHPF12MNPT16X2 2-Stage Whole House Water Filter System, Reduces Chlorine, Sediment Water Filtration System for Home w/ 3/4'' Push-Fit Braided Stainless Steel Hose Connectors and Ball Valve (WGB22B AHPF12MNPT16X2)
【Two-Stage Effective Filtration】The WGB22B whole house water filter system uses a 1st-stage premium 5-micron polypropylene sediment filter (FP25B) to capture dirt, sand, silt, dust, rust, and scale particles, extending the life of the 2nd-stage CTO carbon block filter (FC25B). The high-quality coconut shell carbon and compact fabrication technology remove over 90% of chlorine, cloudiness, bad tastes, odors.
【Superb Filtration Capacity】This 20"x4.5" replaceable whole house water filtration system provides up to 100,000 gallons of clean water per year for a family of four. The 1-inch inlet and outlet ports ensure fast water flow with minimal pressure loss. The fine PP sediment filter and premium CTO filter deliver clean, fresh water to every faucet, prolonging the life of water-using appliances and protecting plumbing from sediment and scale buildup.
【Easy Installation】The braided stainless steel hose connectors, included with the WGB22B home water filtration system, combines a strong stainless steel with an integrated ball valve for easy shut-off. The innovative push-fit design reduces the need for extra joints or fittings, making it ideal for tight spaces and providing enhanced control. A wrench is included for quick filter changes, and a pressure release valve allows for the release of built-up pressure during filter replacement.
【Please Note】Unlike RO systems, this whole house water filter system does not reduce Total Dissolved Solids (TDS), retaining healthy minerals in your water. For TDS removal, consider iSpring Reverse Osmosis (RO) systems.
【Peace of Mind Customer Service】Register online to activate your extended 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 whole house water filter products please reach out to us immediately. We are happy to help!
iSpring WSP50GR+AHPF12MNPT12X2 Reusable Spin Down Sediment Water Filter, 50 Micron with Scraper,360°Head, and Push Fit Ball Valve (WSP50GR+AHPF12MNPT12X2)
Stainless steel mesh filter screen rated at 50 Micron. Double threads on both ends: 1 inch MNPT and 3/4 inch FNPT, 1/4" flush out fitting included. WSP series can be used for waste water treatment by spin down the sediment.
Two 12 inch 3/4'' MNPT X 3/4'' push-fit hoses are included to provide a hassle-free installation to any 3/4'' pipe, including Copper, PEX, or CPVC pipes. No welding or glue needed - just push in the pipe and it is locked in place. A removal tool is also included if you need to disconnect the system from the pipes.
Flushable and reusable, takes the considerable workload off finer filters that follow behind it; helps create a multi-layer gradient filtration system for better filtration results and longer filter life.
The steel mesh filter cartridge and housing can be easily cleaned by rotating the scraper, saving time and effort on routine maintenance.
Lifetime support from iSpring in Alpharetta, GA at (678) 261-7611
iSpring TDS2 2-Button Digital Water Quality TDS Test Meter with Backlit LCD (TDS2)
Two buttons: HOLD and ON/OFF
Hold Function -Saves measurements for convenient reading and recording.
Auto off function -Turns off meter after minutes of inactivity.
Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking x10' image.
Pre-Calibrated
Batteries included
iSpring WSPARB Spin Down Sediment Water Filter, Reusable with Touch-Screen Auto Flushing Module and Built-in Housing Scraper, Brass Top Clear Housing (WSPARB)
[Flushable and Reusable] The whole house spin down sediment water filter is used to create a multi-layer gradient filtration system taking considerable workload off finer filters that follow it and result in a longer filter life. As a larger, upgraded version of WSP series, WSP50ARB filters out particulate, sediment, rust, and floating objects.
[Pressure-resistant and Durable Materials] Lead-free brass machine head, 50-micron food grade stainless steel mesh filter screen, and explosion-proof transparent housing.
[Easy Installation] No welding or glue needed. Works well with copper, PEX, and CPVC pipes.
[Auto Flushing] Integrated Auto Flushing Module(dual power supply) with scraper saves time and effort on routine maintenance. Choose from auto, semi-auto, and manual on HD touch screen to enable the system to flush automatically on a preset schedule. WSP series can be used for waste water treatment by spin down the sediment.
[High Flow Rate] Provide a maximum flow rate of 25 GPM. Two types of threads on both two ends of connectors: 1-inch MNPT and 3/4-inch FNPT.
iSpring WSPB Large Reusable Whole Spin-down Sediment Water Filter with Scraper and Brass Top Clear Housing, 50 Micron (WSPB)
As a larger, upgraded version of WSP series, WSP50B filters out particulate, sediment, rust, and floating objects. WSP series can be used for waste water treatment by spin down the sediment.
Flushable and reusable, used to create a multi-layer gradient filtration system taking the considerable workload off finer filters that follow it and result in longer filter life. Built-in filter screen scraper saves time and effort on routine maintenance.
Pressure-resistant and durable materials: lead-free brass machine head, food-grade stainless steel mesh filter screen, and explosion-proof transparent housing. Easy installation, no welding or glue needed. Works well with copper, PEX, PVC, and CPVC pipes.
The 1” inlet and outlet FNPT fittings provide a maximum flow rate of 35 GPM. Two types of threads on both two ends of connectors: 1-inch MNPT and 3/4-inch FNPT.
30-day money-back guarantee. 1-year manufacturer warranty. Lifetime tech support from iSpring in Cumming, GA at (678) 261-7611.
iSpring FSF2 33-Stage Universal Shower Filter Replacement Cartridge, Improves Conditions of Skin, Hair, and Nails, White (FSF2)
Maximum 33-Stage Filtration Capacity: Featuring a scientifically formulated process of 12 different premium quality filtration media in 15 stages iSpring SF series high output shower filters quickly remove up to 99% of chlorine, sediment, hydrogen sulfide, and water-soluble heavy metals. Water quality is further improved by nurturing elements such as Vitamin C being released and added back to your shower water
Less Cost Longer Life Better Results: Less than a dime a day, iSpring shower filters last longer(6-9 months) than most shower filters on the market. FSF2 fights eczema irritation itchiness or dryness, leaving you noticeably smoother skin, softer hair, and stronger nails. A must-have to protect yourself and your family from inhaling absorbing or consuming dangerous chemicals and pathogens during each shower. A simple and inexpensive step towards a healthy life
Never Clog and Easy Replacement: Its unique Never Clog design copes with hard water and prohibits limescale buildup. Tool free design makes cartridge replacement a breeze. Perfect for iSpring SF2S shower filter. Compatible with Aquabliss SF100 and other shower filters that use replacement cartridges of a similar size( Dimensions 2 ⅜ x 2 ⅜ x 2 ⅝ in ). Note: This filter replacement is intended solely for the SF2S shower filter and should not be used with any other shower filter models
Consistent Water Pressure: Little impact on water pressure. In case source water has high levels of sediment(common with well water), once a while simply flip the filter cartridge over and flush it with hot water to remove sediment built-up, then set it back in its original position
Backed by a 30-day money-back guarantee and extended manufacturer warranty upon warranty registration at iSpring. Lifetime tech support(678-261-7611) from Atlanta, GA USA.
iSpring PH100 6-Stage 100 GPD Under Sink Reverse Osmosis RO Drinking Water Filtration System 1:1 Pure to Waste Ratio with Alkaline Remineralization (PH100)
6-Stage reverse osmosis water filtration. Capable of removing up to 99% of over 1,000 contaminants, including PFAS, lead (removes up to 98% of lead), chlorine, fluoride, arsenic, asbestos, calcium, sodium, and more. Comes with US made filters and RO membrane.
iSpring PH100 rated at 100 GPD, with up to 1:1 filtered water to waste water ratio and upgraded 3/8” input and output design.
Including an additional sixth stage - an Alkaline Remineralization filter which can restore minerals and balanced alkalinity.
Do-it-yourself installation, typically in a couple of hours with industry-leading help just a phone call away. Fits under a standard kitchen sink, with all parts included, instructions, and videos. For leak-free installation, simply push tubing ½ inch deep into quick-fitting connectors and lock - no threading pipes needed.
Features European-designed brushed nickel all-metal faucet and clear see-through 1st stage housing. Backed by a 1-year Manufacturer Warranty with lifetime support line 678-261-7611 from Atlanta, GA USA.
iSpring WCS50KGRO5004F, Whole House Water Softener & Under Sink Reverse Osmosis Water Filtration System, Reduce PFAS, TDS, and Lead, Complete Softening and Purification Solution for the Entire Home (WCS50KGRO5004F)
Removes Salt from Softened Water – Water softeners replace hardness minerals with sodium or potassium, which can make softened water less ideal for drinking. Pairing your softener with a point-of-use reverse osmosis (RO) system removes the added salt and other dissolved solids, delivering fresh, great-tasting, low-sodium water for safe drinking and cooking.
High-Capacity Softening – WCS50KG treats up to 50,000 grains of hardness, protecting plumbing, appliances, and fixtures from scale buildup and extending their lifespan
Intelligent Operation – WCS50KG features an advanced control valve with automatic regeneration, low salt reminder, and vacation mode for hands-free efficiency.
Powerful 6-Layer Filtration – RO5004F removes up to 99% of over 1,000 harmful contaminants, including chlorine, lead, PFAS, arsenic, and fluoride for safer, fresher water
Fast Flow with Built-in Pump – 500 GPD high-output RO system delivers water quickly and maintains strong pressure even for multi-tasking use in the kitchen
Tankless Space-Saving Design – RO5004F’s compact tankless build prevents secondary contamination, eliminates waiting time, and frees up storage space under the sink
Easy Maintenance – Modular filter design allows quick, tool-free replacements while real-time filter life monitoring ensures optimal performance
iSpring Auto Flushing Spin-Down Sediment Water Filter with Bypass, 50-Micron Jumbo Size Touch Screen Reusable Prefilter, w/ Auto Shut-Off Leak Detector Alarm System (Model: WSP50ARJ-BP) (WSP50ARJBPLS43)
Durable Whole House Protection: The WSP50ARJ-BP prefilter blocks sediment, sand, rust, and dirt down to 50 microns, protecting your plumbing, water heaters, and appliances from clogging and damage.
Advanced Self-Cleaning Feature: Equipped with an integrated auto-flushing module, this spin-down filter reduces maintenance time by automatically removing collected debris.
Easy Bypass Operation: Built-in bypass valve allows quick filter cleaning, cartridge replacement, or system maintenance without interrupting water supply.
Heavy-Duty Build: Transparent housing with reinforced construction provides durability and visibility for real-time filter monitoring.
Smart Leak Detection & Protection: The LS43 leak detector system includes an automatic shutoff valve and 2 sensors, with support for up to 8 sensors, giving you whole-home water leak protection.
Quick Installation & Compatibility: With 3/4” NPT connections, LS43 integrates seamlessly with the WSP50ARJ-BP filter, ensuring both filtration and leak prevention in one reliable bundle.
iSpring 3-Stage Whole House Water Filtration System, Removes Sediment, Chlorine, Chloramines, Odor and up to 99% Lead, w/ Smart Flow Sensor UV Filter for Bacteria&Viruses Removal(Model: WGB32B-CPB (WGB32BCPBUVF55)
Targeted Contaminant Reduction: Reduces sediment, dirt, sand, rust, chlorine, and odor to improve taste; removes up to 99% lead and reduces arsenic (III & V), mercury, and cadmium.
3-Stage High-Efficiency Design: Built with a sediment filter, carbon block, and lead-reduction filter using MetSorb media, the system combines mechanical, chemical, and adsorption filtration for comprehensive whole-house protection.
High Flow & Capacity: Up to 15 GPM with 1" NPT in/out and 20" x 4.5" cartridges; rated up to 100,000 gallons for long service life.
DIY-Friendly & Backed Support: Straightforward installation and maintenance; register for extended warranty and enjoy lifetime U.S.-based technical support.
UV Add-On for Disinfection: 55W UV system with smart flow sensor ballast (Auto/Move/Stop), 37.5" 304-SS chamber, 1" MNPT, up to 12 GPM; provides chemical-free final step to inactivate bacteria and viruses.
iSpring 4-Stage Ultra Filtration Under Sink Water System, 0.01-Micron, Removes 99.99% Contaminants, Quick Filter Change with Brushed Nickel Faucet, w/up to 1-Year Replacement Filter Set (Model: CU-A4) (CU-A4F4)
Advanced 4-Stage Filtration: The iSpring CU-A4 effectively reduces chlorine, lead, heavy metals, VOCs, and harmful contaminants, delivering clean and safe drinking water straight from your tap.
Improved Taste & Odor: Enjoy fresh, crisp water by removing unpleasant taste, chlorine smell, and chemical residues, making it ideal for cooking, beverages, and direct consumption.
Compact & Easy to Install: Designed for under sink use, the CU-A4’s space-saving build fits neatly in kitchens, apartments, or RVs. DIY-friendly installation requires no plumbing experience.
Durable & Reliable Performance: Constructed with high-quality materials, the CU-A4 ensures consistent filtration and dependable long-term use, providing better water at your convenience.
Includes Replacement Filters (F4-CUA4): Bundle comes with a complete filter set for up to 1 year of use, ensuring continuous fresh water without the hassle of frequent reorders.
iSpring 5-Stage Countertop Reverse Osmosis Water Dispenser, Instant Hot RO Water, UV Sterilization, Tankless Design, 100 GPD, 2.5:1 Pure to Drain, w/up to 2-Year Replacement Filter Set (Model: RCD100) (RCD100F7)
Advanced 5-Stage Filtration – Removes up to 99% of over 1,000 harmful contaminants including chlorine, lead, PFAS, microplastics, and heavy metals for safe, fresh water every time.
Convenient Countertop RO System – Enjoy pure, great-tasting drinking water without plumbing or installation. The iSpring RCD100 delivers both hot and ambient filtered water directly from your countertop.
Instant Heating Technology – Dispenses hot water in seconds with multiple temperature settings, perfect for tea, coffee, oatmeal, and more.
UV-C Sterilization & Tankless Design – Built-in UV light further safeguards your water by neutralizing bacteria and viruses, while the tankless system prevents secondary contamination.
Includes up to 2-Year Filter Replacement Set – Comes with the F7RCD100 replacement filter pack, ensuring consistent filtration performance and pure water for up to two years.