iSpring FM25B Iron Manganese Reduction Whole House Water Filter Replacement Large Capacity 4.5" x 20"

iSpring FM25B Iron Manganese Reduction Whole House Water Filter Replacement Large Capacity 4.5" x 20"

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: 747168177

Secure Transaction

Details

Material
Iron
Product Dimensions
15.2D x 55.9W
Item Weight
3.63 kg
External Testing Certification
ANSI
Product Benefits
Removes iron

💧Up to 8 GPM flow rate

⚙️50,000 gallons filter life

🛡️Removes iron & manganese to 0.01ppm

Frequently Bought Together

iSpring Whole House Water Filter Cartridge, Iron & Manganese Reducing Water Filter Whole House, 4.5" x 20", Model: FM25B

iSpring WSP-1000 Reusable Whole House Spin Down Sediment Water Filter, 1000 Micron, Flushable Prefilter Filtration, 20GPM, 1" MNPT + 3/4" FNPT, Brass

iSpring ORBX2 Replacement O-ring for Whole House Water Filtration Systems - Pack of 2

Description

💧 Elevate your home’s water game—pure, powerful, and built to last!

LONG LASTING DURABILITY - Filter lifespan of 50,000 gallons—3x longer than traditional green sand filters.
CERTIFIED SAFETY QUALITY - Meets strict FDA and NSF/ANSI standards for safe, reliable drinking water.
BROAD COMPATIBILITY STABILITY - Operates flawlessly across pH 5.8-8.6 and temperatures 40-113°F for consistent results.
EFFORTLESS HIGH FLOW PERFORMANCE - Supports 4-8 GPM with minimal pressure drop, ensuring steady water supply.
UNMATCHED IRON MANGANESE PURITY - Drastically reduces iron from 3.0ppm to 0.01ppm for crystal-clear water.

The iSpring FM25B is a high-capacity whole house water filter replacement designed to dramatically reduce iron and manganese levels to near-zero, delivering clean, safe water at flow rates up to 8 GPM. Engineered for durability and efficiency, it lasts up to 50,000 gallons—three times longer than traditional filters—while meeting rigorous FDA and NSF/ANSI safety standards.

Specifications

Brand	iSpring
Model Number	1
Product Dimensions	11.43 x 11.43 x 50.8 cm; 3.63 kg
Color	white
Name List for Name Plates	Iron Filter
Material	Iron
Wallpaper Pattern	Water Filter
Quantity	1
Included Components	1 x FM25B Filter
Are Batteries Included	No
Item Weight	3.63 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