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?

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.

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

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.

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

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?

Does this remove flouride?

Hi ajb, Unfortunately this unit does not remove fluoride. You will need reverse osmosis in order to remove fluoride. ThanksClaudia

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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

Product ID: 11324872

Details

Brand
iSpring
Capacity
8000 gallons
Included Components
Under sink and
Installation Type
Under Sink
Package Information
Faucet
Power Source
No Need

💧0.01μm ultrafiltration membrane

🔄Twist On/Off quick filter change

⚙️4-stage filtration system

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Description

💧 Elevate your tap water game—because your health deserves the clearest sip!

TANKLESS WASTE FREE - Eco-friendly design with no wastewater and no bulky storage tank—pure water on demand.
EFFORTLESS MAINTENANCE - Push-to-connect fittings and twist-on/off filters make replacements a breeze—no plumber needed.
SLEEK DURABLE DESIGN - Premium brushed nickel faucet and NSF/ANSI certified materials blend style with safety.
CRYSTAL CLEAR HYDRATION - Removes 99.99% contaminants including chlorine, lead, and heavy metals without stripping essential minerals.
ADVANCED 4 STAGE PURIFICATION - Combines sediment, ultrafiltration, KDF/GAC, and activated carbon filters for superior water quality.

The iSpring CU-A4 is a high-capacity, tankless under-sink water filtration system featuring a cutting-edge 0.01μm ultrafiltration membrane and a 4-stage purification process. It removes 99.99% of contaminants like chlorine, lead, and heavy metals while retaining beneficial minerals. Designed for easy installation and maintenance, it includes a stylish brushed nickel faucet and complies with NSF/ANSI safety standards, delivering fresh, clean water without waste or storage tanks.

Specifications

ASIN	B009AEJWZG
Best Sellers Rank	#5,422 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #17 in Under-Sink & Countertop Filtration
Brand Name	iSpring
Capacity	8000 gallons
Container Type	Faucet
Customer Reviews	4.6 4.6 out of 5 stars (7,125)
Filter Life Cycle	6 Months
Global Trade Identification Number	00662425053063
Included Components	Under sink water filter system, parts and tubings, faucet
Installation Type	Under Sink
Item Dimensions L x W x H	10.63"L x 4.33"W x 12.6"H
Item Type Name	4-Stage High Capacity Premium Under Sink Drinking Water System with 0.1 micron Ultra Filtration membrane
Item Weight	2 Kilograms
LowerTemperature Range	40 Degrees Fahrenheit
Manufacturer	iSpring
Material Type	0.01μm Ultra-Filtration, Lead-free & BPA-free Material, Leak-Free, Space-Saving & Easy to Install
Model Name	CU-A4
Model Number	CU-A4
Other Special Features of the Product	4-Stage 0.01 micron ultra-filtration, Heavy Duty, Leak Proof, Remove chlorine, lead, arsenic, odor, metal and more
Part Number	CU-A4
Power Source	No Need
Purification Method	Mechanical Filtration, Chemical Absorption, Redox, and Ultrafiltration
Smart Home Compatibility	Not Smart Home Compatible
UPC	662425053063
Unit Count	1.0 Count
Upper Temperature Rating	100 Degrees Fahrenheit
Warranty Description	30-Day money-back guarantee. 1-Year Manufacturer Warranty. Lifetime support from Atlanta, GA.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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1472246Fr

Duties & taxes included

In stock

Sold byAmazon CongoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Congo.

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TrustScore 4.5 | 7,300+ reviews

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