iSpring

iSpring F3WGB32BM 4 5 x 20 3-Stage Whole House Water Filter Set Replacement Pack with Sediment CTO Carbon

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$125.99$151.99

About this item

  • [Whole House Water Filter that Protects Your Family and Household Appliance from Iron, Manganese, and More] Our iron water filter (FM25B) is specially designed for iron & manganese removal, reducing iron (MAX 3.0 ppm) and manganese (MAX 1.0 ppm). It lasts up to 3 times longer than greensand due to the catalytic media not being consumed in the process. The whole house water filter set also removes sediment, chlorine, rust, herbicides, industrial solvents, and various other contaminants.
  • [Whole House Filter with Standard Size] Our water filter set fits standard housings that require 20” x 4.5” whole house water filter cartridges, including brand name models. The 20” x 4.5” whole house water filter replacement cartridges have a minimum impact on water flow (up to 15 GPM) and require minimum maintenance.
  • [Top-Notch Whole Home Water Filter] The 1st stage high capacity polypropylene sediment filter achieves filtration down to 5 micron. The 2nd stage carbon block water filter is made of high-quality coconut shell carbon for maximum filtration efficiency and filter life. Both water filters are tested by an independent third-party to meet NSF/ANSI standards. Both water filters have a capacity of 100,000 gal. of water, enough to supply a family of four with clean water for a full year.
  • [Peace of Mind Customer Service] Register online to activate your manufacturer and life-time free tech support from U. S. local support team. We stand behind our products and if you encounter any problems with any of our products please reach out to us immediately. We are happy to help!
  • [Please Note] The whole house water filter replacement cartridges are individually wrapped to ensure freshness. Please unwrap before use. For well/pond water with very high iron/manganese please check out iSpring WCFM500K or WCFM400K whole house water filters. Unlike an RO membrane, these whole home water filters don’t reduce Total Dissolved Solids (TDS), and instead keep healthy minerals in your water. If you are interested in a filter that removes TDS, consider our iSpring RO systems.
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Product details

MaterialSediment + Carbon + Iron & Manganese Removal
Product Dimensions10"D x 20"W x 10"H
Item Weight16 Pounds
External Testing CertificationFALSE
Product BenefitsRemoves Iron, Manganese, Sediment, Chlorine, Rust, Herbicides, Industrial Solvents, and Various Contaminants See more

Technical specifications

materialSediment + Carbon + Iron & Manganese Removal
product_dimensions10"D x 20"W x 10"H
item_weight16 pounds
external_testing_certificationFALSE
product_benefitsRemoves Iron, Manganese, Sediment, Chlorine, Rust, Herbicides, Industrial Solvents, and Various Contaminants
brandiSpring
set_nameFirst Set
upc662425088775
unit_count1.0 Count
compatible_water_purifier_modelsiSpring WGB32BM
number_of_items1
manufactureriSpring Water Systems
part_numberF3WGB32BM
item_model_number1
is_discontinued_by_manufacturerNo
size1 Count (Pack of 1)
colorWhite
styleSediment + Carbon + Iron & Manganese Removal
patternWater Filter
power_sourceac
item_package_quantity1
number_of_pieces3
included_componentssediment filter x 1; carbon block filter x 1; iron & manganese reducing filter x 1
batteries_includedNo
batteries_requiredNo
warranty_description30 days
best_sellers_rank#2,918 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #23 in Replacement Under-Sink Water Filters
date_first_availableNovember 6, 2017

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Customer reviews

4.71,673 ratings

Customers say

Customers find the water filter works well, particularly for well water, and appreciate its effectiveness in cleaning sediment and iron.

★★★★★

Worth The Money

DanFebruary 11, 2022✓ Verified purchase

I installed this system in conjunction with a big box store water softener to treat our rusty well water in northern Illinois. Installation was straight forward and went without incident. Prior to installation, our water would look clear coming out of the tap, but the toilets, showers, washing machine, dishwasher, and any other fixtures or appliances would get substantial orange rust stains on them within a few days of cleaning. The water definitely tasted like well water, but it was drinkable in a pinch. After installing the filters, the taste of our well water is comparable to that of bottled water. The rust buildup in the appliances and fixtures was reduced by probably 80% or so, but not completely removed. I just changed my first set of filters after six months, as I was uncertain what my service life would be given our level of rust. We also noticed a minor drop in water pressure in the last couple weeks, suspected filter contamination. The sediment filter was very discolored, probably in the middle of the color chart found on ispring’s site, definitely in the ready to change range. The other filters appeared to be in good condition, no notable discoloration. After the filter change, water pressure returned to normal. Going forward, I plan to change the sediment filter only every four months, the other two filters annually. I will reevaluate that as time goes on, but I think that will be sufficient based on my observations from this first cycle. I think this is a great product that definitely changed or water quality and drinkability. I highly recommend. Read more

★★★★★

Great filters

MeDecember 21, 2024✓ Verified purchase

I live in rural Tennessee and I have an artesian well. The elements are very strong here. These filters help clear the sediment, help the water taste better, and eliminates the odor. It does not reduce the water flow at all. They do have to be replaced about every 6 months, but that's pretty normal. Initially when first installed it leaks a little, but it seems to stop on it's own very quickly. You will see a grayish color (that's the charcoal working, not harmful) in the beginning as stated, but it goes away quickly. I had the water tested by an independent company and they were shocked at the results. It softened the water and lowered all of the major elements in the water. They said we bought an excellent system. I don't even have the red stains from the iron. It's amazing!!! Read more

★★★★★

Good quality

DeannaJanuary 19, 2026✓ Verified purchase

Works perfect for what we needed Read more

★★★★★

Outstanding 3-stage Whole House Water Filter System

Dave and HeatherDecember 16, 2025✓ Verified purchase

I installed the iSpring Whole House Water Filter System in the fall of 2023, and it has been outstanding! We originally used the following three-stage setup: Sediment filter Carbon/CTO filter Iron & Manganese filter The next year, we switched the middle filter to a GAC + KDF filter after learning that our local water company uses chloramine. (The original carbon filter wasn't fully removing it, and we noticed the concentration seemed to increase at times.) The new combination—sediment filter + GAC/KDF filter + Iron & Manganese filter—has worked great for us. (The GAC/KDF switch was a helpful tip from iSpring customer service once we mentioned the chloramine issue--a filter that wasn't available at the time of our original purchase.) Customer service has been excellent throughout: At the time of the original purchase When we switched to the new middle/stage 2 filter Most recently, when our water pressure suddenly dropped a couple of months after replacing the latest filter set (which indicated a problem with one of the filters) Sean responded quickly to our water pressure concern. Once we confirmed our system with a past invoice, he immediately sent out replacement filters at no charge. Overall, we've been very happy with both the system and the support! Read more

Review image 1
★★★★★

Effective filtration and easy to install

BrianOctober 19, 2025✓ Verified purchase

These replacement filters are exactly what I needed for my system. They fit without any issues and the water quality improved right away. The sediment filter catches a lot of debris, and the carbon block does a great job making the water taste great. Installation is straightforward. Good value for a complete set. Read more

★★★★☆

far too costly for the results

B KayeOctober 10, 2025✓ Verified purchase

effective (I think) but WAY too overpriced Read more

★★★★★

I spring replacement filters for three stage Whole house filter system

LAMNovember 24, 2025✓ Verified purchase

Genuine replacement cartridges for isprings large whole house system are surprisingly economical, given their performance, and how long they last. In my application, they are removing quite a bit of iron and sediment from a well system. The water is noticeably softer, and the resulting lack of deposits on fixtures throughout the house is dramatic. I’m sure it will prolong the life span Of my appliances. Count on replacing these more often than the rated one year, lifecycle, depending on usage and incoming water quality. Read more

★★★★★

Peace of mind and great tasting, clean water!

Jacquelyn M.December 26, 2025✓ Verified purchase

We have had this filtration system for a few years now and I find it awesome!!! We have well water and even though we probably don't need it, it gives me peace of mind and water that taste great! The filters last a long time. Thank you0 Read more

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