---
product_id: 48256916
title: "CU-A4 Ultra-Filtration Under Sink Water Filter System, Tankless 4-Stage High Capacity, Remove 99.99% Contaminants, Quick Filter Change with Chrome Faucet, White"
brand: "ispring"
price: "€ 445.21"
currency: EUR
in_stock: true
reviews_count: 12
category: "I Spring"
url: https://www.desertcart.com.cy/products/48256916-cu-a4-ultra-filtration-under-sink-water-filter-system-tankless
store_origin: CY
region: Cyprus
---

# 4-stage ultra-filtration tech Twist-on filter change Tankless design, no wastewater CU-A4 Ultra-Filtration Under Sink Water Filter System, Tankless 4-Stage High Capacity, Remove 99.99% Contaminants, Quick Filter Change with Chrome Faucet, White

**Brand:** ispring
**Price:** € 445.21
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your sip game with ultra-pure water on demand!

## Quick Answers

- **What is this?** CU-A4 Ultra-Filtration Under Sink Water Filter System, Tankless 4-Stage High Capacity, Remove 99.99% Contaminants, Quick Filter Change with Chrome Faucet, White by ispring
- **How much does it cost?** € 445.21 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/48256916-cu-a4-ultra-filtration-under-sink-water-filter-system-tankless)

## 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

- • **Crystal-Clear Hydration:** Removes 99.99% contaminants including chlorine, lead & arsenic for pure, refreshing water.
- • **Dedicated Chrome Faucet:** Premium finish faucet delivers filtered water fast, elevating your kitchen’s style and function.
- • **Effortless Filter Swaps:** Twist-on/twist-off cartridges with color-coded tubing make maintenance a breeze.
- • **Eco-Friendly & Efficient:** No wastewater produced, maximizing water use and minimizing environmental impact.
- • **Sleek, Space-Savvy Setup:** Tankless under-sink design fits discreetly without sacrificing cabinet space.

## Overview

The iSpring CU-A4 is a tankless, 4-stage under-sink water filtration system that removes up to 99.99% of contaminants like chlorine, heavy metals, and sediment while retaining essential minerals. Featuring ultrafiltration membrane technology and KDF/GAC filters, it delivers crisp, clean water through a sleek chrome faucet. Installation is simple with push-to-connect fittings and twist-on filter cartridges, designed for easy replacement every 6-12 months. Its compact, no-waste design fits neatly under your sink, making it an ideal upgrade for health-conscious professionals seeking premium water quality and convenience.

## Description

Free delivery and returns on all eligible orders. Shop iSpring CU-A4 Ultra-Filtration Under Sink Water Filter System, Tankless 4-Stage High Capacity, Remove 99.99% Contaminants, Quick Filter Change with Chrome Faucet, White.

Review: easy to install equipment - My Experience with the iSpring CU-A4 Under Sink Water Filter I recently installed the iSpring CU-A4 under sink water filter, and I'm genuinely impressed. As someone who's always been a bit skeptical about the true efficacy of home water filtration systems, this unit has completely changed my perspective. First off, the installation was surprisingly straightforward. I'm no plumbing expert, but the clear instructions and well-organized components made the process relatively painless. Within an hour or so, I had fresh, filtered water flowing from my dedicated faucet. And what a difference it makes! The most noticeable improvement is in the taste and smell of the water. Our tap water, while generally safe, often had a slight chlorine odor and a somewhat metallic aftertaste. With the iSpring CU-A4, that's completely gone. The water is crisp, clean, and incredibly refreshing. It's truly a pleasure to drink, and I find myself reaching for water more often throughout the day. Even my coffee and tea taste noticeably better. I also appreciate the compact design of the unit. It fits neatly under my sink without taking up an excessive amount of valuable cabinet space, which is a huge plus in smaller kitchens. The dedicated faucet is sleek and unobtrusive, blending well with my existing fixtures. While I can't scientifically measure the contaminant reduction, the peace of mind knowing that my family is drinking water filtered through a reputable system is invaluable. The four-stage filtration process, including activated carbon and ultrafiltration, gives me confidence that we're significantly reducing chlorine, sediment, and other common impurities. In conclusion, the iSpring CU-A4 under sink water filter is an excellent investment for anyone looking to improve the quality of their drinking water. It's easy to install, produces great-tasting water, and offers genuine peace of mind. Highly recommended!
Review: Great tasting filtered water, and very good customer support. - We're really very happy with our new water filter system. It was pretty straightforward to fit, and after running the water through for about 20 - 30 minutes we have water that looks, tastes and smells much better than the regular tap water. You really can tell the difference. No more unpleasant chlorine smell. Having a dedicated tap for the filtered water is a good idea, because then you're not using filtered water to fill up your basin for washing up etc, thus keeping the life in the filters for longer. Fitting the new tap was pretty straight forward on an aluminium kitchen sink. I just drilled a guide hole, and used the tool in the link that I'll put below this review that I bought also from desertcart to cut the hole. Easy to do, just needs a bit of brute force, but it makes a very neat hole. The water from the tap fills a glass at a good speed. One thing to add, is that the customer support is excellent. After fitting, I had a follow up question that I contacted the team about. The reply from Nick was prompt, courteous, and above all really helpful. This should be kept in mind as a big plus point if you're contemplating which manufacturer you should buy from. This is the link to the tool I used to cut the hole in my aluminium sink: https://amzn.eu/d/hEzgCox SagaSave 25mm (16-50MM) Sheet Metal Punch Hole Punch, Metal Inner Hex Hole Cutter for Q.Max, Steel Plate, Stainless Steel

## Features

- SUPERIOR PERFORMANCE: The advance 4-stage design, which includes both Ultrafiltration and KDF/GAC stages, removes up to 99% of chlorine and chlorine treatment by-products, lead, arsenic, and much more, while retaining minerals. Noted: This system is NOT a Reverse Osmosis water filtration system and does NOT lower TDS
- 4-Stage ULTRA FILTRATION SYSTEM: PP Sediment Filter ((5 microns) removes larger particles like rust, sand, dirt. ) Ultra Filtration Filter (contains hollow fiber membrane technology with a pore size of just 0.01 microns. ) KDF and GAC Filter (provides much better control of particularly problematic contaminants including chloramine, hydrogen sulfide, heavy metals, and other compounds). Fine Activated Carbon Filter (provides final polishing)
- SIMPLE AND FLEXIBLE: NO WASTE WATER and No storage water tank required. The CU-A4 provides highly effective water filtration for any number of clean water needs - at the sink, in the refrigerator, for coffee makers and more
- FEATURES: Come with premium Chrome finish drinking water faucet. All filters, tubing and other water-contacting parts are manufactured to comply strictly with NSF/ANSI standards for safety and water quality
- EASY-TO-INSTALL AND REPLACE FILTER: Push to connect fittings with color-coded tubing simplify the installation process. Filter replacement are designed for ease. No need to disconnect hoses or water lines. Just Twist On / Twist Off filter cartridges make changing filters a snap. Filter life: 6 -12 months, depending on your source water and usage

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B009AEJWZG |
| Best Sellers Rank | 56,597 in DIY & Tools ( See Top 100 in DIY & Tools ) 22 in Under-Sink Filters |
| Brand | iSpring |
| Colour | Coffee,White |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,051) |
| Date First Available | 11 Feb. 2014 |
| Item Weight | 2 kg |
| Model Number | CU-A4 |
| Product Dimensions | 26.67 x 11.43 x 31.75 cm; 2 kg |
| Special Features | Tankless |

## Product Details

- **Brand:** iSpring
- **Capacity:** 8000 gallons
- **Included components:** Under sink water filter system, parts and tubings, faucet
- **Installation type:** Under Sink
- **Material:** Polyvinyl Chloride
- **Package information:** Faucet
- **Power source:** Non electric
- **Product dimensions:** 26.7L x 11.4W x 31.8H centimetres
- **Purification method:** Activated Carbon, Granular Activated Carbon
- **Special feature:** Tankless

## Images

![CU-A4 Ultra-Filtration Under Sink Water Filter System, Tankless 4-Stage High Capacity, Remove 99.99% Contaminants, Quick Filter Change with Chrome Faucet, White - Image 1](https://m.media-amazon.com/images/I/81zOpUpCr+L.jpg)

## Questions & Answers

**Q: How many gallons of water will be treated during a filter's lifespan, before they need to be replaced?  Also, is there a change indicator?**
A: The actual gallon life will vary from customer to customer. As with all replaceable filter cartridges, they have limited space to hold the contaminants they remove from your water. This means that the higher concentration of junk you have in your source water, the faster the filters will run out space to keep filtering and vice versa. The average is about 1100 gallons, but this number may not represent your source water, so individual results could either be more or less than the average.

**Q: Has anyone tested the water that comes out of the filter with a TDS meter? I checked mine today and found that the TDS was the same as the tap water**
A: Per Josh @ iSpring 3/7/2017 - this will not remove minerals present in your city's tap water, so there should be little difference in total dissolved solids (TDS) count.

**Q: Can I connect existing water line(previously connect to refrigerator,tiny size) to this unit or I have use a adaptor? and can I only connect to refrig**
A: I answered this before, but after re-reading your question I need to revise my original answer. If you are planning on using this as a primary filtered water supply you will probably find that there is not enough water flow through the original water line that is supplying water to your refrigerator. Maximum flow rate is a function of the diameter of the supply line (among other factors). You could make it work if you had to, but I am thinking the flow rate might be kind of feeble. Why not take the supply from under the sink in the kitchen?

**Q: Does this remove flouride?**
A: Hi ajb, Unfortunately this unit does not remove fluoride. You will need reverse osmosis in order to remove fluoride. ThanksClaudia

## Customer Reviews

### ⭐⭐⭐⭐⭐ easy to install equipment
*by A***S on 20 May 2025*

My Experience with the iSpring CU-A4 Under Sink Water Filter I recently installed the iSpring CU-A4 under sink water filter, and I'm genuinely impressed. As someone who's always been a bit skeptical about the true efficacy of home water filtration systems, this unit has completely changed my perspective. First off, the installation was surprisingly straightforward. I'm no plumbing expert, but the clear instructions and well-organized components made the process relatively painless. Within an hour or so, I had fresh, filtered water flowing from my dedicated faucet. And what a difference it makes! The most noticeable improvement is in the taste and smell of the water. Our tap water, while generally safe, often had a slight chlorine odor and a somewhat metallic aftertaste. With the iSpring CU-A4, that's completely gone. The water is crisp, clean, and incredibly refreshing. It's truly a pleasure to drink, and I find myself reaching for water more often throughout the day. Even my coffee and tea taste noticeably better. I also appreciate the compact design of the unit. It fits neatly under my sink without taking up an excessive amount of valuable cabinet space, which is a huge plus in smaller kitchens. The dedicated faucet is sleek and unobtrusive, blending well with my existing fixtures. While I can't scientifically measure the contaminant reduction, the peace of mind knowing that my family is drinking water filtered through a reputable system is invaluable. The four-stage filtration process, including activated carbon and ultrafiltration, gives me confidence that we're significantly reducing chlorine, sediment, and other common impurities. In conclusion, the iSpring CU-A4 under sink water filter is an excellent investment for anyone looking to improve the quality of their drinking water. It's easy to install, produces great-tasting water, and offers genuine peace of mind. Highly recommended!

### ⭐⭐⭐⭐⭐ Great tasting filtered water, and very good customer support.
*by T***D on 19 April 2025*

We're really very happy with our new water filter system. It was pretty straightforward to fit, and after running the water through for about 20 - 30 minutes we have water that looks, tastes and smells much better than the regular tap water. You really can tell the difference. No more unpleasant chlorine smell. Having a dedicated tap for the filtered water is a good idea, because then you're not using filtered water to fill up your basin for washing up etc, thus keeping the life in the filters for longer. Fitting the new tap was pretty straight forward on an aluminium kitchen sink. I just drilled a guide hole, and used the tool in the link that I'll put below this review that I bought also from Amazon to cut the hole. Easy to do, just needs a bit of brute force, but it makes a very neat hole. The water from the tap fills a glass at a good speed. One thing to add, is that the customer support is excellent. After fitting, I had a follow up question that I contacted the team about. The reply from Nick was prompt, courteous, and above all really helpful. This should be kept in mind as a big plus point if you're contemplating which manufacturer you should buy from. This is the link to the tool I used to cut the hole in my aluminium sink: https://amzn.eu/d/hEzgCox SagaSave 25mm (16-50MM) Sheet Metal Punch Hole Punch, Metal Inner Hex Hole Cutter for Q.Max, Steel Plate, Stainless Steel

### ⭐⭐⭐⭐⭐ Worth it - great water and good after sales support even years on
*by P***S on 4 February 2025*

Long time customer or iSpring. I've installed the american style system in my family homes in Canada and this system in my home in the UK. Their filtered water tastes as it should! I had an issue with the included tap/faucet leaking but iSpring sent out a replacement that works without issue. Only other issue I had in years of owning this was not being able to find replacement paper discs for the mechanical leak sensor (water makes the paper discs swell which pushes on a valve to close the flow of water), and because I get condensation under my sink I have to replace them more regularly than I'd want to. I contacted iSpring and Francis helped me out with that too. They're very good at after sales support - that's probably the main reason I keep coming back to them, aside from the quality of their product that is. I can easily recommend it to you if you have a 1-stage filter or filter jug and are looking for some real water filtration. The cost of filters is only marginally higher than for a filter jug, and for something that gives you on-demand well filtered water without waiting.

## Frequently Bought Together

- iSpring CU-A4 0.01μm Ultra-Filtration Under Sink Water Filter System, Tankless 4-Stage High Capacity, Remove 99.99% Contaminants, Quick Filter Change with Brushed Nickel Faucet, White
- iSpring ICEK Ultra Safe Fridge Water Line Connection and Ice Maker Installation Kit for Reverse Osmosis RO Systems & Water Filters, 1/4", 20 feet
- iSpring APR40 Pressure Regulator Filter Protection Valve with 1/4" Quick Connect, 40 psi

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-10*