Whole House Water Filter Systems

What Happens to My Under Sink Filtration System When I Install a Whole House Water Filter

whole house water filter

A few days ago, I received a consultation from a customer about whether it is necessary to replace the under sink filter after installing the pp10bb-cc model of the PUREPLUS whole house filter. It means that somebody considering installing a whole house water filter but worried about the impact it will have on my under sink filtration system. It’s a common concern, and we’re here to put your mind at ease. In this blog post, we’ll explore the ins and outs of what happens when you add a whole house water filter and how it affects your existing under sink system. Get ready to learn everything you need to know about making this important home improvement decision!

What is the difference between a Whole House Water Filter and an Under Sink Filtration System?

Whole house water filters and under sink filtration systems differ significantly. While whole house filters treat water entering your entire residence, under sink filters target water originating from a particular tap.

Installation locations and sizes vary: whole house filters attach to your property’s central water line, treating water flowing throughout your house; under sink filters go beneath an individual sink, concentrating solely on its source. As a result, the two types possess different strengths.

Due to their broader reach, whole house filters offer greater coverage but usually necessitate bigger components and upkeep. Alternatively, under sink filters deliver improved customization and easier maintenance but cover fewer sources of contamination. Based on your requirements, either solution could provide suitable results

Benefits of a Whole House Water Filter

A whole house water filter is a single unit that filters all of the water coming into your home. This means every time you turn on the faucet, take a shower, or wash your clothes, the water is filtered.

water filter whole house

There are many benefits to filtering all of the water coming into your home:

  1. You and your family will be exposed to fewer harmful chemicals and contaminants.
  2. Your plumbing will thank you! Fewer contaminants in the water mean less buildup in your pipes and fixtures. This can extend their life and save you money on repairs down the road.
  3. The whole house water purification device can be flexibly matched, and even a soft water function can be added. Can make skin and hair smooth.

I have a Whole House Water Filter System, why need to also install an Under Sink Filter?

The answer is two fold. First of all, a whole house water filter will not filter out everything. There are certain contaminants that are simply too small to be caught by the whole house filter. This is where an under sink filter comes in handy, as it is designed to target smaller contaminants that can slip through the cracks, so to speak.

Secondly, a whole house water filter is a system that is the whole house water purification system is the first line of defense in the home, and it will be divided into different lines to enter the under-counter, washing machine, dishwasher, toilet, and shower areas. This is especially important if you have young children or elderly family members in your home who are more susceptible to becoming ill from contaminated water. For example, PUREPLUS Under Sink 5300A is certified by IAPMO, which can effectively remove spores, pesticides, and other harmful chemicals in the water.

Water quality and installation conditions

If you have a whole house water filter installed, it is important to remember to change the filters regularly. Depending on the type of system you have, you may need to change the filters every few months or every year. The frequency will be listed in your owner’s manual. It depends on where you live, your water environment, etc. Here I recommend you the American Water Quality Association, which can help you inquire about the water quality environment in your living area. Of course, you can choose Free or Paid Services according to your needs.

Click on the Explanation of terms on the US Water Quality Map reference website to know.

In addition to changing the filters, it is also important to clean your system regularly. Once a quarter, flush the system with clean water to remove any sediment that has built up. You can do this by disconnecting the input hose and letting water run through the system for a few minutes.

By following these simple maintenance tips, you can ensure that your whole house water filter will continue to work effectively for years to come.

Alternatives to Sink Filtration Systems

If you’re looking for alternatives to traditional under sink filtration systems, consider options like high throughput activated carbon water filters, reverse osmosis systems, ultrafiltration systems, or UV light disinfection systems.

High throughput activated carbon water filters boast NSF certification and can handle up to 22,000 gallons before replacement. They effectively remove harmful chemicals from your water supply, ensuring your loved ones stay protected.

For those seeking even higher levels of purification, reverse osmosis systems may be worth exploring. By forcing water through a semi-permeable membrane, these systems capture contaminants down to 0.00001 microns. On average, a family of three would pay just $0.3 per day for clean drinking water. Additionally, switching to a reverse osmosis system could potentially save you money by reducing your reliance on bottled water.

Lastly, UV light disinfection systems can supplement your current water treatment setup. Their primary function is to kill bacteria and viruses in your water, making them ideal for those who prioritize extra protection against microscopic threats. For added convenience, these units can also be integrated into your overall whole house water purification plan.


When you install a whole house water filter, it doesn’t necessarily mean removing your existing under sink filter. It depends on your specific water conditions. Instead, focus on finding the most suitable whole house water purification solution to ensure the healthiest possible water for your entire home. This initial step will also allow you to prolong the lifespan of any under sink filter, depending on its type and functionality.

To receive personalized assistance, please inform our team at PUREPLUS about the type of under sink water purifier you are using and your desired outcome, allowing us to assist you more efficiently.

whole house water filter replacement

3 thoughts on “What Happens to My Under Sink Filtration System When I Install a Whole House Water Filter

  1. David Gill says:

    How do I cancel an order which was placed on 07-21 but still shows “Processing” in the account status.

  2. David Gill says:

    There is no customer contact phone number on the website. There is no Customer Service choice on the site menu. There is no option on the Order Status page for cancelling the order. Repeated (5 as of today) emails to the “service@purefilterplus” have not been answered. Tried the “Chat with me!” option online 5 times in the past 4 days, but no response. How do I communicate with pureplus? Thanks. David Gill gilld@earthlink.

    1. Ivellios says:

      I apologize for the delayed response. I have sent you an email reply to your question.
      Please check your inbox and let me know if the email I sent provides the information you needed.
      Thank you for your patience and understanding. I regret that you had to wait for a response – that is not the level of service we aim to provide. If you have any other questions or concerns, please feel free to respond to this message or the email and I will be sure to get back to you promptly.
      We truly appreciate you bringing this matter to my attention. I want to ensure we are providing excellent customer support. Please accept my sincere apologies again for the delay. I look forward to assisting you further.

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