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iSpring WGB21B-KS 2-Stage Whole House Water Filtration Syste…

iSpring WGB21B-KS 2-Stage Whole House Water Filtration Syste…

Original price was: $220.99.Current price is: $179.99.

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Price: $220.99 - $179.99
(as of Dec 18, 2025 07:57:28 UTC – Details)

Clean Drinking Water for Your Entire Home: iSpring WGB21B-KS 2-Stage Whole House Water Filtration System Review

Are you concerned about the quality of the water coming out of your taps at home? Do you want to ensure that your family has access to clean and safe drinking water? Look no further than the iSpring WGB21B-KS 2-Stage Whole House Water Filtration System. This comprehensive system is designed to provide your entire home with filtered water, removing impurities and contaminants that can affect the taste, odor, and safety of your drinking water.

How it Works

The iSpring WGB21B-KS system uses a two-stage filtration process to remove a wide range of contaminants from your water supply. The first stage features a 5-micron sediment filter that captures larger particles such as dirt, rust, and sand, while the second stage uses a 5-micron CTO (Chlorine, Taste, and Odor) filter that removes chlorine, lead, volatile organic compounds (VOCs), and other impurities that can affect the taste and smell of your water.

Key Features and Benefits

  • Comprehensive filtration: The iSpring WGB21B-KS system filters all the water in your home, including water from sinks, showers, and appliances.
  • Long-lasting filters: The filters in this system have a long lifespan, with the sediment filter lasting up to 6-12 months and the CTO filter lasting up to 12 months, depending on usage and water quality.
  • Easy installation: The system is designed for easy installation, with a simple and compact design that can be installed by a DIY enthusiast or a professional plumber.
  • High flow rate: The system has a high flow rate of up to 15 gallons per minute, ensuring that you have a steady supply of filtered water throughout your home.
  • Certified and tested: The iSpring WGB21B-KS system is certified to NSF/ANSI standards and has been tested to remove a wide range of contaminants, including lead, chlorine, and VOCs.

Why Choose the iSpring WGB21B-KS System?

There are many reasons why the iSpring WGB21B-KS 2-Stage Whole House Water Filtration System stands out from the competition. Here are just a few:

  • Affordable: The system is priced competitively, making it an affordable option for homeowners who want to improve the quality of their drinking water.
  • Effective: The system is highly effective at removing a wide range of contaminants, including lead, chlorine, and VOCs.
  • Low maintenance: The system is easy to maintain, with long-lasting filters that require minimal replacement and maintenance.
  • Peace of mind: With the iSpring WGB21B-KS system, you can have peace of mind knowing that your family has access to clean and safe drinking water.

Conclusion

The iSpring WGB21B-KS 2-Stage Whole House Water Filtration System is a comprehensive and effective solution for homeowners who want to improve the quality of their drinking water. With its long-lasting filters, easy installation, and high flow rate, this system is an excellent choice for anyone looking to provide their family with clean and safe drinking water. Whether you’re concerned about the taste and odor of your water or want to remove impurities and contaminants, the iSpring WGB21B-KS system is an excellent option.

Customers say

Customers find this whole house water filter system to be well-built and worth the price, with clean and clear water quality and improved taste, particularly noting the removal of chlorine taste. The system is easy to install and works effectively, with one customer mentioning its success with a whole-house pre-water softener system. However, several customers report issues with leakage around threaded connections.

13 reviews for iSpring WGB21B-KS 2-Stage Whole House Water Filtration Syste…

  1. Placeholder –

    Great system and Great Costumer Service
    The installation of the filter was a relatively simple process. The water quality improved dramatically, boasting remarkable clarity, a pleasant taste, and no discernible odor. Nevertheless, it became necessary to acquire a new set of filters, as the water flow began to decrease, prompting consideration of replacing the water tank. It is also worth noting that the customer service team was highly attentive and knowledgeable, with Nick providing exceptional assistance, including the registration of the system and the supply of new filters.

  2. Eric w Hull –

    Simple solution for better water
    Good value, easy installation and good results. Mix filters for a wide range of issues. My iron filter needed replacing early but my ground water is horrific.

  3. paji –

    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.

  4. Jeremy T. –

    Great but Expensive
    The iSpring FP15B 5-Micron Sediment Filter is a solid, dependable choice for whole-house water filtration. It does exactly what it’s designed to do—capture sand, silt, rust, and other fine particles—while keeping good water flow throughout the home. The build quality feels sturdy, and installation is straightforward if you’re familiar with standard 4.5″ x 10″ filter housings.Performance-wise, it noticeably improves water clarity and helps protect downstream appliances and filters. It also lasts a good amount of time before needing replacement, depending on your water conditions.The only drawback—and the reason for a four-star rating—is the price. While the filter works very well, it’s a bit on the higher side compared to similar sediment filters on the market. Still, if you’re looking for reliability and consistent filtration, this is a strong option.

  5. Mary –

    A+ water filter
    Right out of the box it was easy to read instructions and install. This is a great add in to any water system for extra filtering. Changing filter is quick and simple with the included tool to remove containers. Great design and size to fit anywhere. I would recommend this water filter to everyone thinking they may need it, this will help.

  6. Toni Adcock –

    Very good filters.
    No smell. Filters water efficiently. We have a lot of minerals, especially calcium in our water and these work great.

  7. Mangoman –

    Exceptional Product & Support
    Installation of the iSpring WGB21BM whole house water filter was surprisingly easy—even for a non-plumber. The system is thoughtfully designed, and everything connected smoothly without issue. But the real highlight is the improvement in our water quality—noticeably better taste right from the start, with no metallic aftertaste and noticeably clearer water throughout the house.I also want to give special credit to iSpring’s customer service, which was outstanding. I had a very minor issue and reached out—within a short time, a real person responded with a solution and followed up afterward to ensure I was completely satisfied. He even encouraged me to reach back out anytime in the future and emphasized that iSpring stands behind their products and wants every customer to be happy.In a time when post-sale support often leaves much to be desired, iSpring delivered personal, responsive care that exceeded expectations. Highly recommended.

  8. Diane Harrell –

    Have it professionally installed
    Ordered this for my plumber to install. Works perfectly

  9. Am –

    La única crítica que tengo, es que es caro. Deberían haber paquetes que permitan abaratar sustancialmente el producto.

  10. UnklJoe –

    Very good filter at a good price.

  11. francesco –

    Filtraggio acqua del pozzo

  12. Legend of Gizmo –

    This ispring carbon filter works perfectly. Last a long time and removes the bad chlorine taste and smell. No noticeable drop of pressure. It’s the only one i buy now.For a family of 4. On municipal water i change it once a year.

  13. Paul Van –

    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.

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