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Item #:
241127497
iSpring F3-CUA4 Water Filter for Ultra-Filtration Water Filter System CU-A4
90% of respondents would recommend this to a friend
Item #:
241127497
GBP 139
Price Details
Price
GBP 139
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If Item price + shipping is below GBP 135, 20% VAT will be calculated on checkout, if it is equal or above GBP 135, no VAT will be charged. )
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Order now and get it around Sunday, September 13
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The advance 4-stage design... removes up to 99% of chlorine and chlorine treatment by-products, lead, arsenic, and much more.
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What Stands Out
Advanced Filtration
Utilizing a 4-stage system, the iSpring CU-A4 removes 99.99% of contaminants, ensuring pure water for your household while enhancing health and safety.
Tankless Design
The tankless feature saves space under your sink while providing high-capacity filtered water on demand, eliminating the need for bulky storage tanks.
Easy Maintenance
Quick filter changes make maintenance simple, allowing users to enjoy clean water effortlessly without the need for professional assistance.
Product Details
- 4-stage Ultrafiltration system with PP sediment filter, Ultrafiltration membrane, KDF/GAC filter, and fine activated carbon filter
- Removes up to 99% of chlorine, lead, chloramine, hydrogen sulfide, heavy metals, and other compounds
- No waste water and no storage water tank required, suitable for various clean water needs
- Includes premium brushed nickel finish drinking water faucet and complies with NSF/ANSI standards for safety and water quality
- Easy installation with push-to-connect fittings and twist on/twist off filter cartridges for simple replacement
- Designed to maintain natural alkaline balance, great taste, and retain natural minerals in the water
| Model Number | F3-CUA4 |
| Product Benefits | Removes impurities, extends carbon filter life, absorbs residual chlorine and odor, protects delicate UF membrane |
| Brand Name | iSpring |
| Set Name | White - 8000 Gallons (1-Year Set - 3 Filters) |
| Global Trade Identification Number | 00662425063581 |
| Unit Count | 1 Count |
| Number of Items | 1 |
| Included Components | UltraFiltration filters |
| Item Type Name | water filters |
| Manufacturer | iSpring Water Systems |
| Manufacturer Part Number | F3-CUA4 |
| Material Type | Carbon,Coconut Shell,Activated Carbon |
| Item Dimensions D x W x H | 11"D x 16"W x 18"H (27.9 x 40.6 x 45.7 cm) |
| External Testing Certification | NSF |
| EU Spare Part Availability Duration | 6 tmonths |
| Material | Carbon,Coconut Shell,Activated Carbon |
| Product Dimensions (L x W x H) | 11"D x 16"W x 18"H (27.9 x 40.6 x 45.7 cm) |
| Product Benefits | Removes impurities, extends carbon filter life, absorbs residual chlorine and odor, protects delicate UF membrane See more |
| Brand | iSpring |
Who Should Buy?
-
Health-Conscious Families
Families wishing to ensure safe drinking water by removing contaminants effectively may benefit from this ultra-filtration system.
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Apartment Dwellers
Those living in apartments with limited space will appreciate the tankless design of this under sink water filter.
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Frequent Water Users
Individuals or families that consume large quantities of water daily will benefit from the filter's high capacity.
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Well Water Users
Users relying on well water may find this system less effective against certain contaminants prevalent in well water.
Product Description
iSpring F3-CUA4 Water Filter for Ultra-Filtration Water Filter System CU-A4
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What types of contaminants does the iSpring CU-A4 filter remove?
Answer: The iSpring CU-A4 water filter is designed to effectively remove up to 99.99% of contaminants, including bacteria, viruses, sediment, chlorine, heavy metals, and other harmful substances. This ultra-filtration system operates at a 0.01μm filtration level, which ensures that microbial impurities and smaller particles are effectively eliminated from your drinking water. By using this filter, you can enjoy cleaner, safer water for drinking, cooking, and even making beverages like coffee and tea, ensuring peace of mind about your water quality. -
Question:
How does the tankless design of the iSpring CU-A4 benefit users?
Answer: The tankless design of the iSpring CU-A4 offers several advantages, primarily improved space efficiency and continuous water supply. Unlike traditional systems that require a bulky storage tank, this filter system maximizes under-sink space and delivers filtered water on demand. It’s ideal for households with limited under-sink areas or those who prefer a more compact setup. This design means that you never have to wait for stored water to refill; you can have immediate access to pure, filtered water whenever you need it. -
Question:
How often do I need to change the filters in the iSpring CU-A4?
Answer: The filter change frequency for the iSpring CU-A4 typically depends on your water quality and consumption levels. However, it generally requires replacement every 6-12 months. The quick change feature allows you to easily replace the filters without needing any special tools or professional assistance. This ensures that your filter maintains optimal performance while providing consistent access to clean water, reducing the hassle of filter changes and keeping your water filtration system running smoothly. -
Question:
Is installation of the iSpring CU-A4 difficult?
Answer: Installation of the iSpring CU-A4 is designed to be user-friendly and straightforward. It typically involves connecting the water supply line to the filter under your sink and attaching the outlet to the faucet. Detailed instructions are provided with the system, making it manageable for most homeowners. Even if you’re not particularly handy, you can easily install it without significant effort, providing you with instant access to filtered water, which is essential for healthy living. -
Question:
What is the flow rate of the iSpring CU-A4 water filter?
Answer: The iSpring CU-A4 boasts an impressive flow rate, with the ability to provide filtered water at a rate of up to 2 gallons per minute. This high capacity allows for quick filling of containers and ease of use during meal preparation or entertaining guests. Reliable and efficient, the flow rate ensures that you won't experience frustrating delays when accessing clean, great-tasting water, making it perfect for busy kitchens and households. -
Question:
How does the 4-stage filtration process work in the iSpring CU-A4?
Answer: The 4-stage filtration process in the iSpring CU-A4 systematically purifies water to ensure maximum contaminant removal. The stages include pre-filtration to remove larger particles, a high-capacity ultra-filtration membrane to eliminate tiny organisms and impurities, a post-filter for added refinement, and finally, an activated carbon filter for taste and odor improvement. This multi-layered approach guarantees effective filtration, providing you with crisp, refreshing water straight from your tap—ideal for cooking and hydration. -
Question:
Can the iSpring CU-A4 be used with well water?
Answer: Yes, the iSpring CU-A4 can be used with well water, making it a versatile option for homeowners relying on private water sources. It effectively removes contaminants commonly found in well water, such as bacteria and sediment. However, it is recommended to perform a water quality test beforehand to ensure compatibility and maximum effectiveness. When using well water, this system can significantly enhance your water quality, ensuring it's safe and pleasant to drink. -
Question:
What materials are used in the construction of the iSpring CU-A4?
Answer: The iSpring CU-A4 is constructed from high-quality, food-grade materials that ensure safety and durability. Its components are engineered to resist corrosion and leakage, providing consistent performance over time. The use of these materials not only enhances its longevity but also ensures that your filtered water remains free from harmful substances. This level of quality is critical for maintaining health and safety standards, making it a reliable choice for families. -
Question:
Where can I buy the iSpring CU-A4 0.01μm Ultra-Filtration Under Sink Water Filter System?
Answer: You can purchase the iSpring CU-A4 0.01μm Ultra-Filtration Under Sink Water Filter System on Ubuy in UK. Ubuy offers a convenient platform to order your filtration system, ensuring you receive a quality product that meets your water purification needs, and their platform supports a seamless shopping experience. -
Question:
What are the benefits of using the iSpring CU-A4 compared to bottled water?
Answer: Choosing the iSpring CU-A4 over bottled water comes with numerous benefits, primarily cost savings, convenience, and environmental sustainability. By installing this filtration system, you can enjoy an endless supply of fresh, clean water right at your sink, eliminating the need for expensive bottled water. Moreover, using a dedicated filtration system reduces plastic waste and your carbon footprint, promoting a healthier planet. This makes the iSpring CU-A4 a practical and eco-friendly solution for households concerned about sustainability and health.
iSpring Under-Sink & Countertop Filtration F3-CUA4 Editorial Review
iSpring CU-A4 4-Stage Ultra Filtration Under Sink Water Filter System offers exceptional filtration while taking up minimal space, an essential feature for any kitchen. The system boasts easy installation, with snap-fit connections that ensure no leaks during operation. Users consistently report great tasting water comparable to bottled options after an initial flushing period. However, be prepared to familiarize yourself with the installation process as the included directions can be somewhat unclear, particularly regarding plumbing connections. Nevertheless, iSpring's customer service receives high praise, ensuring that any inquiries or issues are promptly resolved, making this a reliable choice for those seeking cleaner drinking water.
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Pros
- Easy installation process with familiarization
- Snap-fit connections prevent leaks
- Convenient twist-on filter replacements
- Compact design saves under-sink space
- Durable metal construction for faucet
Cons
- Installation instructions may lack clarity for some users.
Platform Trust & Buyer Confidence
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Jazz
Verified buyer
“Easy to use and always helpful and sorts any issues I've had past and present”
1 September 2026 · via Trustpilot
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“I always receive support when I engage customer service. Overall my experience with UBUY has been top notch. Keep up the good work.”
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“The delivery was fast and the product came undamaged and authentic.”
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Hengo
Verified buyer
“Fast, convenient and cheap. Great store!”
27 August 2026 · via Trustpilot
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GBP 139
Excluding VAT : VAT will be calculated on the checkout page
Order now and get it around Sunday, September 13
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Secured transaction
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Features & Benefits
- 4-stage Ultra Filtration System
- Removes up to 99% of contaminants
- No waste water and no storage water tank required
- Easy-to-install and replace filter
- Filter life: 6-12 months
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