

💧 Elevate your home’s water game — because your family deserves the freshest flow!
The iSpring FC25B Whole House Water Filter features a 20” x 4.5” CTO carbon block cartridge made from premium coconut shell activated carbon. It effectively removes up to 99% of chlorine, taste, odor, and sediment while maintaining a high flow rate of up to 15 GPM. Certified to NSF/ANSI standards, this filter fits standard housings and offers easy installation and maintenance, delivering fresh, clean water to every tap in your home without stripping essential minerals.



















| ASIN | B01M1197LW |
| Best Sellers Rank | #11,065 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Whole House Water Treatment Systems |
| Brand Name | iSpring |
| Customer Reviews | 4.6 4.6 out of 5 stars (905) |
| Global Trade Identification Number | 00662425080250 |
| Included Components | 1 Whole House CTO Carbon Block |
| Installation Type | Under Sink |
| Item Dimensions L x W x H | 5.98"L x 5.98"W x 22.01"H |
| Item Type Name | Whole House CTO Carbon Block |
| Item Weight | 2.36 Kilograms |
| Manufacturer | iSpring Water Systems |
| Material Type | Carbon Block |
| Maximum Flow Rate | 15 Gallons Per Minute |
| Model Name | High Capacity 20” x 4.5” Water Filter |
| Model Number | 1 |
| Other Special Features of the Product | Chlorine Reduction, NSF certified |
| Power Source | Ac |
| Purification Method | Activated Carbon, Carbon Block |
| Supported Water TDS Level Maximum (PPM) | 1000 |
| UPC | 662425080250 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 125 Degrees Fahrenheit |
M**S
Good product
I change this filter anywhere from 6 months to a year depending on if I notice a change in the water. Most of the time it’s one year to match the timing of the sediment filter. I have the dual iSpring filter connected to incoming city water before hitting my Chlorine/Chloramine and Water softener combo before entering the home supply. The fridge filters it one more time. But it still tastes good from any tap in the home.
B**N
Best Filter I've Tried in 8 Years!
We have used a filtering system for over 8 years now. We live in a community with a water treatment system. It's not a complete filtering system and it also adds Chlorine. Yuk! In the beginning we used the Pentek FloPlus filters. They still go for $80 and up now on Amazon. Each time I replace a filter, I look for new alternatives. For instance, last time I found the Geekpure 20-Inch Big Blue Carbon Block Water Filter . It was close to 1/3 the price I was paying. It came with 5-star reviews. Why not! I usually know that a new filter is needed when the pressure drops. It didn't drop this time, but I looked to replace it after 10 months - a long time! This time I found this iSpring FC25B. It too was close to 1/3 the price of the Pentek with the greatest capacity of any other filter and the best promise of Chlorine removal. The pressure was great. There was not even a hint of chlorine or anything else. Great tasting water. That's what I'm looking for. Now, we'll see how long it lasts and the pressure keeps up. That's the final test. Installation is easy. Turn of water to filter. I keep bypass closed and water is directed only to outdoor hose hookup (so I can clean housing). Open any faucet in house to release pressure. Remove old filter and clean housing and install new filter. Change and lubricate O-ring (with vegetable grade lubricant). Screw housing back in "hand tight." Then with the housing wrench tighten a bit more. Finally, open valve to send water through the filter. It's usually about a 10-15 minute job.
L**H
It does the job well.
This works well. I had it on a regular subscription until my wife lost the credit card and I forgot to update it in Amazon. Now I wait until our well water starts to get a little funky, and I buy a new one (the filter, not my wife) which clears up the funk.
B**.
ISpring WGB32BM and WSP-200SL - Quality Product with Quality Customer Service
have a 60 foot deep living well that I was going through filters like crazy with the whole house filter from Culligan. The well has a bunch of sediment so I was not surprised that it clogged a smaller single stage filter. The smaller filter would only get the sediment but the water would come out of the faucet with a brown tint and have a slight smell to it. I purchased the ISpring WGB32BM as well as an ISpring WSP-200SL Sediment Filter and with both of these combined the water to my cabin faucet was crystal clear, had zero sediment and had zero smell. Just to compare I set up an unopened purchased bottle of water next to a bottle of the water out of my faucet and the purchased bottle of water had visible sediment in the bottom of the bottle and the faucet water had no visible sediment at all. Fast forward two years after being installed (which was very simple) and I was changing out a well pump and had to change the location of the filtration system. I damaged the heads of the filtration system so I called ISpring and talked to Nick about purchasing the parts that I damaged. Nick was awesome and is shipping me a new one even though it was due to my fault. That is what you call great customer support.
F**R
Works on chlorine but not long lasting
When I installed this filter to reduce chlorine level of .4 ppb, it worked great. Free chlorine went to undetectable levels. We use about 200 gallons per day. After two months, chlorine was at .1 to .2 ppm level. I could have got a bad filter. Customer service was great and sent a replacement filter. I will report back later.
B**A
Great customer service
I don't often leave reviews but I am left no other choice this time. 5 years ago we made the decision to go with whole house filtration and we chose the iSpring WGB32B system and we have not been disappointed with our choice since. Our water has been clearer and better tasting since installing. Unfortunately, recently we heard the sound of rushing water coming from the basement. One of the filter housings had split under pressure. I contacted iSpring the next morning and talked to Sean who was extremely helpful and even though it has been 5 years since I first bought the system Sean was able to not only replace the filter housing but I got a whole new system within a few days of my call. Thanks Sean and iSpring for restoring my faith in customer service.
M**K
Great Filters!
Great filters at a good price. Customer service is excellent, and they definitely stand by their product.
K**M
Good quality
Excellent product. Easy to install, so as long as you preplan the pipe route. This has improved the water quality and customer service is quick to respond if I have a question that needs to be resolved, specifically JOHN. I added an additional bone char filter to eliminate fluoride for the entire house and have two come to support this brand and have recently bout two shower head mineral filters and a reverse osmosis under the sink filter. Since having this product I only had one defect which would include a broken carbon filter which was most likely broken by the delivery driver but a quick email and a replacement was sent without any hassle.
C**N
Buena calidad, algo caro pero adecuado para filtrar el agua de toda la casa
E**4
Arrived in good condition
M**I
As advertised
D**E
Bought here because it was cheaper then the local plumbing supply
L**N
Easy to change
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