DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan

Customer Services

About Us

Customer Support

Desert Online General Trading LLC

Dubai, United Arab Emirates

FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5”

FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5”

Q: We are looking to install this in a seasonal cabin, can this be winterized?

Hi Cate, This unit should be protected from direct sunlight or freezing temperature. Depending on the environment in the winter, the housings might become damaged. Please contact us with more details so we can better assist you. iSpring Water Systems 678-261-7611 support@ispringfilter.com

Q: I received this whole house filter and one of the cartridges is broken model fc25b. can i get a replacement of this broken cartridge?

allfilters.com I used iSpring for a while and then the types of filters ordered was so confusing......and its all made in China.......unlike advertised. So I switched to allfilters....now keep in mind that they don’t send one at a time....but the price difference, the nonconfusion, sent by USPS and customer support won me over. ALL MADE IN THE USA! Allfilters also sells the canisters. When ordering filters go by the size ei: 4 1/2” x 20”

Q: Do you still need a water softener with this if hardness is 250 ppm?

Hi there, It's optional but would help p[rolong the life of the filters if you install one. We usually recommend a water softener with TDS higher than 700 PPM. Please let us know if you have other concerns. Stay safe! iSpring Water Systems, LLC

Q: What pressure gauge is recommended to install pre and post filter that will work with 3/4" PEX supply line?

I use the one on a spin down pre filter and a 3/4” shark bite with gauge post filter

Product ID: 253575606

Secure Transaction

Details

Material
Carbon Block
Product dimensions
15.2D x 55.9W
Item weight
2.36 Kilograms
Product benefits
Remove and for
Brand
iSpring

🌴Coconut shell carbon block

💧99% chlorine removal

⚙️15 GPM flow rate

Frequently Bought Together

iSpring FC25B NSF Certified High Capacity Big Blue Whole House Water Filter CTO Carbon Block, 4.5" x 20"

iSpring FM25B 4.5" x 20" Big Blue High Capacity Iron Manganese Reducing Replacement Water Filter

Description

💧 Elevate your home’s water game with crystal-clear confidence!

SEAMLESS FLOW ZERO HASSLE - Maintains a robust 15 gallons per minute flow rate, ensuring no compromise on water pressure or convenience.
SUPPORT THAT HAS YOUR BACK - Lifetime free tech support from a local U.S. team—because your peace of mind matters.
PURE WATER PURE CONFIDENCE - Removes up to 99% of chlorine, odors, and harmful chemicals for fresh, clean water throughout your home.
PREMIUM COCONUT CARBON POWER - Crafted from high-quality coconut shell activated carbon for superior filtration and extended filter life.
CERTIFIED QUALITY YOU CAN TRUST - Independently tested to meet NSF/ANSI standards, guaranteeing safety and performance you can rely on.

The iSpring FC25B is a 20” x 4.5” whole house CTO carbon block water filter designed to remove up to 99% of chlorine, odors, and contaminants while maintaining a strong 15 GPM flow rate. Made from premium coconut shell activated carbon, it meets NSF/ANSI standards and offers long-lasting filtration with minimal maintenance. Perfect for ensuring fresh, great-tasting water throughout your home, backed by lifetime U.S.-based tech support.

Specifications

Brand	iSpring
Model Number	FC25B
Color	Gray
Product Dimensions	11.43 x 11.43 x 50.8 cm; 2.36 kg
Capacity	15 Gallons per Minute
Material	Carbon Block
Special Features	ro
Item Weight	2.36 Kilograms

Have a Question? See What Others Asked

We are looking to install this in a seasonal cabin, can this be winterized?

I received this whole house filter and one of the cartridges is broken model fc25b. can i get a replacement of this broken cartridge?

Do you still need a water softener with this if hardness is 250 ppm?

What pressure gauge is recommended to install pre and post filter that will work with 3/4" PEX supply line?

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

463 zł

Duties & taxes incl.

Polandstore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews