Do I Still Need a Refrigerator Filter with a Whole House System?

 If you've recently installed a whole house water filtration system, you’re already enjoying clean, filtered water throughout your home. But many homeowners still ask us one common question: "Do I still need to use the water filter in my refrigerator?" The short answer? Probably not—but it depends on a few factors.

Let’s break it down.

What a Whole House Water Filtration System Does

A whole house system (like those provided by One Water Systems) is installed at the point where water enters your home. This means all the water you use—from your shower to your kitchen sink—is filtered. It typically removes:

  • Sediment and dirt

  • Chlorine and chloramines

  • Harmful chemicals and VOCs

  • Odors and bad taste

  • Heavy metals depending on the model

In short, it delivers clean, great-tasting water to every tap, including the water line that feeds your refrigerator.

What a Refrigerator Filter Does

Refrigerator filters are small, carbon-based filters that are designed to remove chlorine, improve taste, and reduce odors. They’re helpful if you’re using unfiltered tap water, but they’re limited in what they can do.

Most fridge filters:

  • Only treat water after it enters the fridge

  • Don’t remove as many contaminants as a full system

  • Require frequent (and often expensive) replacements

So, Do You Still Need It?

If you have a One Water Systems whole house filter, your water is already filtered before it reaches the fridge. That means:

  • Your refrigerator filter is not strictly necessary

  • You’re unlikely to notice a taste or quality improvement from keeping it

  • You can remove it—or replace it less often—if allowed by your fridge model

Some newer fridges even let you bypass the filter with a plug or setting, which saves you money and maintenance.

 When You Might Want to Keep It

There are a few situations where keeping your refrigerator filter makes sense:

  1. If you have well water and want an extra level of filtration

  2. If your refrigerator uses a reverse osmosis system

  3. If your fridge manufacturer requires the filter for proper functioning

But for most city water users with a high-quality whole house system, keeping the fridge filter is usually redundant.

The Cost Advantage of Ditching the Fridge Filter

Refrigerator filters typically cost $40–$60 and need replacing every 6 months. That adds up over time. If your whole house system is doing the heavy lifting, skipping the fridge filter can be a smart financial move—without sacrificing water quality.

If you’re using a One Water Systems whole house water filter, you can likely remove your refrigerator filter with no worries about water quality. It’s one more way your investment in clean water pays off throughout your home.

Want to learn more about how One Water Systems can simplify your life and purify your entire home’s water?
Contact us today for a free consultation!

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