Model # CU-A4

Internet #206874773

ISPRING 4-Stage 0.1 Micron Ultra-Filtration Under Sink / Inline Water Filtration System with No-Pressure Chrome Faucet
0662425053063

ISPRING

4-Stage 0.1 Micron Ultra-Filtration Under Sink / Inline Water Filtration System with No-Pressure Chrome Faucet

$ 152 91

Overview

Simpler and more compact than Reverse Osmosis systems, the CU-A4 is an excellent choice for most general water filtration applications. The advanced 4-stage design of the CU-A4, featuring a unique combination of Activated Carbon, Ultra Filtration and KDF filters, removes a wide variety of unhealthy contaminants, including bacteria, algae, fungi, giardia, lead, arsenic, iron, nickel, chromium, cadmium, calcium, aluminum, mercury, chlorine and chlorine treatment by-products, pesticides, hydrogen sulfide and other organic compounds. You experience safer, healthier and better-tasting water, without the hassle, expense and negative environmental impact of bottled water. It is very easy to install and maintain – only requiring occasional filter replacement. The high-capacity, high-performance filters last up to twice as long as other filters and provide maximum water flow – a difference you’ll notice when you turn on the faucet. A beautiful lead-free faucet included with the system is usually mounted on the counter as the primary source of drinking water, but with a wide range of optional parts and accessories, the CU-A4 easily adapts to fit nearly any refrigerator or ice maker connection*. Our push-to-connect fittings and color-coded tubing simplify the installation process and minimize the possibility of leaks. Perfect for RVs, apartments or where space is at a premium, the CU-A4 is the best, most economical and flexible choice for clean, fresh, great-tasting water instantly.
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Frequently Bought Together

Frequently Bought Together

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Product Overview

Simpler and more compact than Reverse Osmosis systems, the CU-A4 is an excellent choice for most general water filtration applications. The advanced 4-stage design of the CU-A4, featuring a unique combination of Activated Carbon, Ultra Filtration and KDF filters, removes a wide variety of unhealthy contaminants, including bacteria, algae, fungi, giardia, lead, arsenic, iron, nickel, chromium, cadmium, calcium, aluminum, mercury, chlorine and chlorine treatment by-products, pesticides, hydrogen sulfide and other organic compounds. You experience safer, healthier and better-tasting water, without the hassle, expense and negative environmental impact of bottled water. It is very easy to install and maintain – only requiring occasional filter replacement. The high-capacity, high-performance filters last up to twice as long as other filters and provide maximum water flow – a difference you’ll notice when you turn on the faucet. A beautiful lead-free faucet included with the system is usually mounted on the counter as the primary source of drinking water, but with a wide range of optional parts and accessories, the CU-A4 easily adapts to fit nearly any refrigerator or ice maker connection*. Our push-to-connect fittings and color-coded tubing simplify the installation process and minimize the possibility of leaks. Perfect for RVs, apartments or where space is at a premium, the CU-A4 is the best, most economical and flexible choice for clean, fresh, great-tasting water instantly.
  • Superior 4-stage multipurpose water filtration system for safer, healthier, better-tasting water, the unique 4-stage design, which includes both ultrafiltration and KDF/GAC stages provides the most effective water filtration in its class
  • 0.1 micron ultrafiltration (UF) stage removes up to 99% of most problematic pollutants such as chlorine and chlorine treatment by-products, bacteria, giardia, lead, arsenic, and much more, while retaining healthy minerals
  • Simple, compact and flexible, 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, with no storage water tank and no waste water, the CU-A4 is perfect even for RVs
  • Designed for high reliability, maximum flow rate and low maintenance, the CU-A4 uses High capacity cartridges that last up to twice as long as similar products. can be installed inline and used as a fridge filter
  • All filters, tubing and other water-contacting parts are manufactured to comply strictly with FDA and NSF/ANSI standards for safety and water quality, simple to install and simple to maintain, CU-A4 easy-twist cartridges simply twist on and off
  • Note: if you plan to use the CU-A4 as an inline filter without the included air-gap faucet, your incoming water pressure needs to be 40 PSI or below, if it is above that, a 40 PSI pressure regulator (APR40) should be installed on the input line to keep the pressure on the system at 40 PSI or below, please contact us if you plan to “tee off” the pure water line and connect it to your fridge, as you would need a regular RO faucet along with a pressure regulator
  • For windows requiring emergency access capabilities, please see Prime-Line’s model number S-4779

Product Overview

Model #: CU-A4
Internet #: 206874773

Simpler and more compact than Reverse Osmosis systems, the CU-A4 is an excellent choice for most general water filtration applications. The advanced 4-stage design of the CU-A4, featuring a unique combination of Activated Carbon, Ultra Filtration and KDF filters, removes a wide variety of unhealthy contaminants, including bacteria, algae, fungi, giardia, lead, arsenic, iron, nickel, chromium, cadmium, calcium, aluminum, mercury, chlorine and chlorine treatment by-products, pesticides, hydrogen sulfide and other organic compounds. You experience safer, healthier and better-tasting water, without the hassle, expense and negative environmental impact of bottled water. It is very easy to install and maintain – only requiring occasional filter replacement. The high-capacity, high-performance filters last up to twice as long as other filters and provide maximum water flow – a difference you’ll notice when you turn on the faucet. A beautiful lead-free faucet included with the system is usually mounted on the counter as the primary source of drinking water, but with a wide range of optional parts and accessories, the CU-A4 easily adapts to fit nearly any refrigerator or ice maker connection*. Our push-to-connect fittings and color-coded tubing simplify the installation process and minimize the possibility of leaks. Perfect for RVs, apartments or where space is at a premium, the CU-A4 is the best, most economical and flexible choice for clean, fresh, great-tasting water instantly.

  • Superior 4-stage multipurpose water filtration system for safer, healthier, better-tasting water, the unique 4-stage design, which includes both ultrafiltration and KDF/GAC stages provides the most effective water filtration in its class
  • 0.1 micron ultrafiltration (UF) stage removes up to 99% of most problematic pollutants such as chlorine and chlorine treatment by-products, bacteria, giardia, lead, arsenic, and much more, while retaining healthy minerals
  • Simple, compact and flexible, 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, with no storage water tank and no waste water, the CU-A4 is perfect even for RVs
  • Designed for high reliability, maximum flow rate and low maintenance, the CU-A4 uses High capacity cartridges that last up to twice as long as similar products. can be installed inline and used as a fridge filter
  • All filters, tubing and other water-contacting parts are manufactured to comply strictly with FDA and NSF/ANSI standards for safety and water quality, simple to install and simple to maintain, CU-A4 easy-twist cartridges simply twist on and off
  • Note: if you plan to use the CU-A4 as an inline filter without the included air-gap faucet, your incoming water pressure needs to be 40 PSI or below, if it is above that, a 40 PSI pressure regulator (APR40) should be installed on the input line to keep the pressure on the system at 40 PSI or below, please contact us if you plan to “tee off” the pure water line and connect it to your fridge, as you would need a regular RO faucet along with a pressure regulator
  • For windows requiring emergency access capabilities, please see Prime-Line’s model number S-4779

Info & Guides

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Ratings (112) (28) (1108) (924)
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Specifications

Dimensions

Fitting size (in.)
0.25
Product Depth (in.)
4
Product Height (in.)
13.5
Product Width (in.)
15

Details

Bacteria Reduction (%)
99
Chlorine reduction (%)
99
Color/Finish
White
Contaminants Filtered
Lead, Chlorine, Bacteria, Iron
Copper Reduction (%)
0
Features
Twist and lock design
Filtration Method
CTO,Carbon Block,Coconut Shell Carbon,GAC,KDF,Sand or Sediment
Fitting style
Quick connect
Fluoride Reduction (%)
0
Includes
Faucet,Filter
Iron Reduction (%)
95
Lead reduction (%)
99
Maximum feed water pressure (psi)
50
Maximum feed water temperature (F)
100
Maximum filtered water flow (gallons per min.)
0.56
Minimum feed water pressure (psi)
20
Minimum feed water temperature (F)
40
Number of filters included
4
Number of stages
4
Product Type
Filter System
Product Weight (lb.)
6lb
Returnable
90-Day
Water Filtration System Type
Under Sink

Warranty / Certifications

Certifications and Listings
No Certifications or Listings
Manufacturer Warranty
1 Year

Specifications

Dimensions

Fitting size (in.)
0.25
Product Depth (in.)
4
Product Height (in.)
13.5
Product Width (in.)
15

Details

Bacteria Reduction (%)
99
Chlorine reduction (%)
99
Color/Finish
White
Contaminants Filtered
Lead, Chlorine, Bacteria, Iron
Copper Reduction (%)
0
Features
Twist and lock design
Filtration Method
CTO,Carbon Block,Coconut Shell Carbon,GAC,KDF,Sand or Sediment
Fitting style
Quick connect
Fluoride Reduction (%)
0
Includes
Faucet,Filter
Iron Reduction (%)
95
Lead reduction (%)
99
Maximum feed water pressure (psi)
50
Maximum feed water temperature (F)
100
Maximum filtered water flow (gallons per min.)
0.56
Minimum feed water pressure (psi)
20
Minimum feed water temperature (F)
40
Number of filters included
4
Number of stages
4
Product Type
Filter System
Product Weight (lb.)
6lb
Returnable
90-Day
Water Filtration System Type
Under Sink

Warranty / Certifications

Certifications and Listings
No Certifications or Listings
Manufacturer Warranty
1 Year

Questions & Answers

Can this filter be connected to the cold water side of the main kitchen faucet

Asked by: Scotr
Yes, absolutely, that is where I attached mine.
Answered by: ninergold
Date published: 2018-11-20

Looking to reduce the white dust resulting from minerals in the water that is used in ultrasonic humidifiers.

I am on well water and have a water softener ( salt based) system.
Asked by: HFB66
I’ve owned my system now for over 2yrs and have no complaints... water is very clean although there is no sparklers taste is still does the job for cooking and coffee for me ... lol
Answered by: SillyMike1
Date published: 2018-12-04

I have a whole house water softener. Does it remove or reduce salt?

I have a whole house water softener. Does it remove or reduce salt?
Asked by: Paulie
Hi Paulie, Yes the CU-A4 ultra-filtration system will reduce salt from your source water. Thank you, iSpring Water Systems LLC
Answered by: iSpring Water Systems
Date published: 2018-07-16

Does it use proprietary filters or generic filters?

Does it use proprietary filters or generic filters?
Asked by: Norsk
Hi, The system used proprietary filters and we would recommend only using the iSpring OEM filters for this system. Thank you, iSpring Water Systems LLC
Answered by: iSpring Water Systems
Date published: 2018-11-08
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Customer Reviews

4-Stage 0.1 Micron Ultra-Filtration Under Sink / Inline Water Filtration System with No-Pressure Chrome Faucet is rated 4.6 out of 5 by 28.
Rated 5 out of 5 by from We have had it for about a year. Got it installed by a plumber, so cannot speak about the install... We have had it for about a year. Got it installed by a plumber, so cannot speak about the installation. We love the taste of water, and since this is connected to the cold line, we have no fear of the hot water contaminating our drinking water. We do have an old water heater so that was one of my concerns. While purchasing I read all the pros and cons of RO vs this one. Finally I went for this unit. The reason was that - RO wastes a lot of water, we wanted to be environmentally responsible. - RO removes all the minerals. We could go with re-mineralization but really? - RO requires more maintenance as there is a tank involved. If you don't maintain your RO, its worse than tap water. Why bother with it at all? But we are also aware that - RO is the gold standard in purification and this one only comes close. - It won't remove viruses. We trust our city water and only wanted to improve the taste so this was not a concern. - Depending on your water, it may not remove all the flavor/smell you don't like. It is not a problem for us, but some reviewers have noted it, and I believe them.
Date published: 2019-01-18
Rated 5 out of 5 by from Exelent water filteration system!! A breeze to install, and easy to replace the filters. Second y... Exelent water filteration system!! A breeze to install, and easy to replace the filters. Second year and no leaks or issues. The ispring water filter has met all expectations.
Date published: 2019-02-24
Rated 5 out of 5 by from Excellent filter I purchased this filter about 6 months ago, and am very satisfied with it. It was easy to install, and we definitively taste a difference with the water. It is also the best system that I found to filter heavy metals, which was important to us due to our water source.
Date published: 2019-04-12
Rated 4 out of 5 by from 4 Star Review Rating provided by a verified purchaser
Date published: 2019-02-06
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2019-04-10
Rated 5 out of 5 by from Met all expectations ... Met all expectations
Date published: 2019-03-12
Rated 5 out of 5 by from This is the best filter I could find, that isn't a water wasting R/O, after a ton of research, t... This is the best filter I could find, that isn't a water wasting R/O, after a ton of research, this is the best filter system for under counter IMO. The instructions that come with it are a joke. I was able to go online and find instructions that where much more coherent. Came with everything I needed to connect to my water lines under the sink took me 30 minuets to install.
Date published: 2017-02-01
Rated 5 out of 5 by from Easy to install and works well.... Easy to install and works well.
Date published: 2018-12-04
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