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💧 Elevate your home’s water game—because clean water is the new luxury.
The iSpring WGB21B is a robust 2-stage whole house water filtration system featuring a 5-micron sediment filter and a premium CTO carbon block filter that removes over 90% of chlorine, odors, and harmful VOCs. Designed for families, it delivers up to 50,000 gallons of clean water annually at a flow rate of 15 GPM, ensuring every faucet provides fresh, mineral-rich water. Easy DIY installation, durable construction, and dedicated US-based customer support make it a top choice for health-conscious homeowners seeking reliable, whole-home water purification.



















| ASIN | B01F9A4UVU |
| Best Sellers Rank | #3,256 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Whole House Water Treatment Systems |
| Brand Name | iSpring |
| Capacity | 50000 Gallons |
| Container Type | Bottle |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,921) |
| Global Trade Identification Number | 00662425080359 |
| Included Components | 1 sediment filter, 1 carbon block filter, 1 set of installation kit |
| Installation Type | Freestanding |
| Item Dimensions L x W x H | 26"L x 19"W x 11"H |
| Item Type Name | with 10" x 4.5" Big Blue Sediment Filter and CTO(Chlorine, Taste, and Odor) Filter, 1" Inlet/Outlet |
| Item Weight | 21.8 Pounds |
| Manufacturer | iSpring Water Systems |
| Material Type | Alloy Steel, Polyethylene |
| Maximum Flow Rate | 15 Gallons Per Minute |
| Model Name | WGB21B 2-Stage Whole House Water Filtration System |
| Model Number | 1 |
| Other Special Features of the Product | Chlorine & Seiment Removal, Heavy Duty, Leak Proof, No Power Needed |
| Power Source | No Need |
| Product Shelf Life | 1 Years |
| Purification Method | Mechanical filtration, Chemical Absorption |
| Supported Water TDS Level Maximum (PPM) | 2500 |
| UPC | 662425080359 |
| Unit Count | 1.0 Count |
| Warranty Description | By default every iSpring whole house water filtration system comes with thirty-day money back policy and one-year limited manufacturer warranty. We care and love to help customers. Besides DIY videos on YouTube and Knowledge Base on our website, we provide lifetime customer service from Atlanta, GA. Please don't hesitate to reach out to us before and after your purchase. Your satisfaction is our b… |
D**N
Highly Recommended if You Have a Questionable Water Supply
Like most people, we purchased this to clean up our local water. We live in a water district that gets it's water from a series of wells. It's mostly acceptable water, but every once and a while we would see a noticeable color change in the water for a day or two - a yellowish tint. The water district said there was no issue, but we were concerned what quality of water we were actually getting. We also have an on demand hot water heater. They are more prone to develop scale from poor water supply. The filter system installation was straightforward and easy. It is bigger than you might imagine, so measure to make sure that you'll have the wall space required. We immediately noticed a difference in our water quality. The clarity of the water in our bath was noticeable. It almost felt like we had installed a water softener. The replacement filters are easy to replace. Watch for them on sale to save yourself a few dollars. High quality and a noticeable difference!
P**I
Outstanding Product and Exceptional Support!
I am absolutely thrilled with both the iSpring product and the outstanding customer support provided by Francis! After installing it by myself, I encountered a minor leak. Despite my best efforts, there was a slight water leak in three separate places. #1 is fixed with a slight tightening, but #2 (the other side) and #3 did not stop. I reached out to iSpring's support, and Francis stepped in to assist me. His response was not only prompt but incredibly detailed and helpful. Following his instructions, I applied O-ring grease, which stopped the leak at #3. Although it didn't completely stop the leak at #2, it did help reduce it. That is when Francis quickly arranged for replacement parts to be sent to me. He provided a tracking number and kept me updated throughout the process. The replacement arrived swiftly, and I am happy to report that the system is now working perfectly. The leak has been resolved, and the system is performing flawlessly. Whenever we experience heavy rain or a series of rainy days, the water in our city often turns brown for several hours, sometimes even longer. During these times, the city sends out water quality warning text messages. Residents in our subdivision are advised to flush their taps until the water runs clear again, as recommended by the city. After installing the iSpring filter, we had three days of rain, yet the water inside our house remained clear. However, the water in our garden, which is not filtered through the iSpring system, was as brown as usual. The product itself is top-notch, and Francis’s support was the cherry on top. His dedication to resolving my issue and his detailed instructions made a potentially stressful situation smooth and straightforward. Thank you iSpring and Francis for both their excellent products and their exceptional customer service.
N**N
WGB21B water filter system.
I bought the WGB21B water filter system. The install went good. Make sure to follow instructions about the thread tape around if wraps. There is a couple of plastic guides that are on the filter housing. I thought they had to be removed before installing filters. I found out they are there to line up filters. Very happy with performance.
A**N
Nice system
We wanted a whole-house system because our municipal water is terrible. It smelled like a pool on a hot day nearly every time we turned on the kitchen faucet. This kit came with all we needed. The reasons I can’t give it a five-star rating are: 1. I haven’t had it long enough for a water quality comparison, e.g. taste, smell, etc. 2. One of the plastic inlet pieces started stripping the thread after wrapping it in plumber’s tape. I bought a metal fitting to replace it, and it worked great. I recommend using pipe dope as well as tape to ensure long-lasting connections. Overall, it’s not the most difficult thing to install, provided you have easy access to your water main coming in and plenty of room to mount the system off the ground. If I have updates later about filter life, system sturdiness, etc, I’ll post them. I’ve been emailing with Julian and it’s been great. They’re very responsive.
A**.
Great Water Filter, Phenomenal Customer Service
I purchased this filter on July 2018, and it has been a great addition to my home. I love knowing that all the water coming to my home has been filtered, and you can really see it working when you change out your filters. I am on city water but still, my sediment filter is dark brown by them time it comes to changing. So the filter works and my water tastes better. But my 5 star review is not just for the quality of the product and the filter performance, but their customer service as well. When the filter was originally installed, I believe the plumber we hired to install it was too rough with the housing and over screwed the pipe in, causing it to crack. It seems that he tried to seal it with a pipe sealant or the like, but of course, that will only last so long, so earlier this summer, the filter developed a leak. I contacted their customer support, and honestly expected to be talking to somebody 2 million miles away who would tell me tough luck. Instead, somebody named Nick in their US based offices (I think in GA) answered the phone and he was more than nice. I was willing to pay for another housing, but he said that they stand by their products and even tho the warranty was only for a year, and I was on my 3rd year of ownership, he would happily ship another part out to me at no cost. I was amazed. For myself, like so many, have seen products and product support on Amazon turn to garbage over the past couple years, so it was so refreshing to come across this product with a real support team behind it that actually knows the product and lives in the US. The even put their regular old phone number (not 1-800 number) on the product itself. Unbelievable! Fully recommend this product if you are looking for a whole home filter, and i fully recommend you get a whole home water filter. If you've even watched like 3 youtube videos on plumbing, you probably don't even need a plumber to install it. Super easy. A+
F**O
Filtraggio acqua del pozzo
P**N
Waited to review until installed for over a month. My system is on well water with a fine clay sediment issue. So far everything is working well. I rebuilt my entire old system. The first filter is the iSprings WSP50 spin down which I can switch out the screen size From 50micron to 1000m & 3 more sizes in between. The spin down cleaning feature works great and is very convenient.Next is my old 22" bag filter (20m). Then the iSpring WGB21B 2filter unit ( Again you have various choices of filters to use depending on your situation) I put guages at each end of all these filters and have only a1 PSI drop after a month of use. I called Don at iSprings with a few questions and received excellent service. He even called back a few days later to check up. All 3 units from iSpring are well made and easy to install if you have some DIY skills. When placing the copper reducer on the plastic filter housing use at least 6-8 wraps of high end plumbers tape. Carefully tighten fiitting to the last thread; this should not leak then. Try to solder as much as possible before screwing into the plastic filter ends. If unavoidable wrap wet cloth aroud joints of copper and plastic before soldering.
T**E
Prévoir des accessoires en plastique pour raccordement
R**N
Excelente producto y de muy buena calidad 100 % recomendable
S**.
Excelentes base y filtros para mi cisterna me han dado muy buen resultado!!
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