Best Inline Water Filter: Reviews & Buying Guide Of 2019

Best Inline Water Filter: Reviews & Buying Guide Of 2019

Wouldn’t you love the convenience of a filter that lies between your water line and appliances to filter your home water to the last drop?

It is easy to see that such a filter will ensure that every drop of water you consume in your home is 100% pure and healthy. Besides, it’ll save you a considerable amount of space compared to other filters.

Like all the other filters, inline water filters vary in many ways. So, you might get overwhelmed when looking for an ideal model for your home.

Luckily, I’m at your help.

Below, I’ll walk you through an expert buying for the best inline water filter to help buy a model that blends with your home water purification needs.

(If you don’t have time to read the full guide, just check the 10 best-performing models I’ve reviewed for you below).

What's an Inline Water Filter?

An inline water filter simply refers to a type of filter that you install directly to your existing water supply line and within your home water consuming appliances.

As you’d expect, this type of filter comes with one primary role, just like any other filter out there- to remove all the contaminants and other undesired elements in your water.

But how are these filters different from the water filtration systems?

I’ve already told you that they have a different installation method (we’ll get into more details later in the post). Other ways in which they differ from other filters revolve around how the following:

  • They come with a compact design, making them ideal for homes with limited spaces
  • A good number of homes used them alongside the reverse osmosis water filtration units to act as the final water purification (polishing) stage before you can consume the water
  • Others use the filter by connecting them to the home appliances- like coffee makers, ice makers, fridges, and so on. They work well with appliances with lower water flow rate

Also keep in mind that inline water filters offer you an amazingly affordable way of filtering your home water to make it clean and healthy for drinking, cooking. You can find a model providing you with up to 2000 gallons of water capacity for only $100.

Unlike what most homeowners think, different inline water filters vary depending on their features, intended purpose, functioning, and so on.

This explains why you’re always advised to choose your model with care to ensure it meets your specific water filtering needs.

Below, we take a look at the 10 top-rated models that are enjoying extensive usage across many homes in the states…

10 Best Inline Water Filter Reviews:

1. LASCO 37-1821 Ice Maker Inline Filter Review:

Starting off our list of the top-best inline water filters in the LASCO 37-1821 Ice Maker Inline Filter. The main reason why homeowners across the globe love this filter is its effectiveness at removing all the impurities in your water, including chlorine, bad taste, and turbidity, at an insanely affordable cost for all homes.

Another amazing thing that will make you doubt this filter’s price is its water filtering capacity. That is, it can filter a total of 1500 gallons of water for home use. And that translates to about six months of enjoying clearer and clearer water for use with your appliances.

The box comes with the 1/4-Inch compression connection fittings included as part of making the installation process easy and straightforward.

Though the manufacturer recommends using this model with ice makers, feel free to use it with just any other appliances in your kitchen. With such a compact size of 2-Inch x 10-Inch, you’ll agree with me that this filter continues the space-saving legacy of inline water filters.

Highlighted features:

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    Inline ice maker filter
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    1/4-Inch compression connection fittings
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    Measures 2-Inch x 10-Inch
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    Filters up to 1500 gallons

2. Watts Inline Filter – 20,000 gallon capacity Review:

With a 20,000 gallons water capacity, this Watts Inline Filter takes the price home for the best-performing, longest lasting inline water capacity on this list. In other words, you’ll use the model for a couple of years, unlike most of its rivals which last for several months only.

Also hanging on the lower price end, this model has been tested and proved by WQS to excellently reduce chlorine, bad taste and odor, while lowering buildup of scales and improving the clarity and taste of your water. Its special filtration media also comes with outstanding bacteriostatic properties, meaning an extended life for the filter.

Because it comes with all the necessary installation accessories, installing this filter into your existing water line is a breeze. You don’t need to hire any professional plumber.

 You can use this inline filter with nearly any accessory in your home- including water coolers, ice makers, refrigerators, commercial coffee makers, water fountains, and so much more.

Highlighted features:

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    Lasts up or 20,000 Gallons
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    Reduces chlorine taste and odor and other contaminants in water
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    WQA certified
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    Works with a variety of home appliances
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    Easy to install

3. Waterfilter Tree WLF-EF01 Universal Inline Filter Review:

Third comes the Waterfilter Tree WLF-EF01 Universal model ideal for use with refrigerators, ice makers, under sink, and other accessories. It’s one of the most advanced models on the market today and comes engineered with compressed carbon for exceptional blocking of chlorine, bad taste and odor, and other contaminants in your domestic water.

Though its filters might not filter huge water purification capacities like our previous model, they’re still able to cope with up to 343 gallons. And this equates to 4-5 good months of purified household water.

 Something else that makes this model win a place on our list is how easy it is to install. It comes with a push in/out connector that helps you fit it in a matter of minutes.

Highlighted features:

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    Uses Concentrated Carbon Technology
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    Filters up to 343 water gallons; 4-5 months of use
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    Made in South Korea
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    Easy installation and operation

4. Omnipure K2533JJ Inline Water Filter Review:

Omnipure K2533JJ Inline Water Filter comes with a truly pocket-friendly price. But don’t mistake that for poor quality or performance…this is one of the most used inline filter modes that you can connect with your refrigerator, ice maker, drinking fountains, beverage equipment, counter the counter systems, and so on.

With this model, you can rest assured that all the water being used in the appliances named above will be excellently filtered than ever before. Being a post-RO (reverse osmosis acid washed GAC filter, it’ll make the final filtration touches to the water that has already been filtered with your whole-house RO system- reducing any remaining chlorine odor and taste as well as other contaminants.

Omnipure K2533JJ stays to the compact size of inline models, with exact dimensions of 2" W X 10" L. it presents you with 1500 gallon water filtering capacity (or 6 months service life). And the included quick connect fittings makes it super easy to install and replace the strainers.

Highlighted features:

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    Super easy installation
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    Reduces chlorine odor/taste
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    1,500-gallon filter capacity
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    NSF Standard 42 certified

5. EZ-FLO 60461N In-Line Water Filter Review:

The EZ-FLO 60461N does a remarkable job at removing any impurities present in your water to the last drop. Like our previous models, it also comes with a low price to let you enjoy clean without breaking the bank.

Like most of the other inline filter models, this EZ-FLO 60461N also presents you with filters with an average lifespan of 6 months. In other words, its filters can filter a total capacity of 1500 gallons. Because it measures 10 inches long, you’ll agree with me what it doesn’t consume significant space in your home.

Ideal for use with nearly all your appliances, this model is also straightforward to install. This is mainly based on the fact that the manufacturer ships it alongside 1/4" compression fittings so that you don’t have to spend extra cash on buying them.

Highlighted features:

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    1500 gallon capacity; lasts approx. 6 months
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    10" water filter
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    Straightforward installation
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    Removes impurities in your drinking/cooking water

6. Inline Water Filter Kit for Ice Makers Review:

While this practical filter is several bucks higher than our previous models, it still qualifies as an economical choice for all homeowners looking for a reliable inline water filter. Its n excellently example of highly flexible inline filter than you can place in various locations- leg behind your fridge or ice maker or under your cabinet/sink.

If you want to enjoy better tasting water and ice, this is the right model for you. It does a great job at purifying your water and kicking out chlorine that affects its taste and odor.

 It has undergone rigorous NFS/ANSI Standard 42 tests to prove its water filtering prowess, so you’re assured of reliability and dependability. With a filtering capacity of 1500 gallons or 6 months lifespan, you’ll enjoy its reliability for even longer.

The installation part is doubtlessly the best! This stems from the fact that the box comes with ALL the installation tools and accessories includes for a quick, hassle-free setup. These tools include quick connect fittings, NSF water line, water line adapter, shutoff valve, mounting brackets, and well-illustrated instructions.

Highlighted features:

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    Better tasting water and ice
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    1500 gallons filtering capacity; 6 months lifespan
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    Hassle-free installation
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    Graphical user manual included
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    FREE lifetime warranty, phone support

7. Culligan IC-EZ-1 EZ-Change Inline Icemaker and Refrigerator Filtration System Review:

For those who base their buying process on brands, you can never go wrong with the Culligan water treatment products. The company has received high reputation for its products, both locally and internationally, for many, many years. Their IC-EZ-1 EZ-Change Inline water filter ranks among some of its most favored products by homeowners all over.

This filter takes its water filtering game a notch higher by using the Culligan’s EZ change filter cartridges. These have a reputation for clearing, cleaning, and improving your water taste.

The NSF certification acts as sufficient proof of its high filtering capabilities. What’s more, it has a longer lifespan of 12 months which translates to 3,000 gallons filtering capacity.

Another reason you’ll love this model is how its installation process has been made easy with the included mounting screws, filter head (with built-in bracket), filter change reminder sticker and easy to comprehend user manual.

The twist-on, twist-off mechanism makes filters replacement super easy! And oh! Don’t forget it comes with a bonus EZ replacement cartridge for added convenience.

Highlighted features:

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    Inline ice maker and refrigerator filter
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    EZ change replacement cartridge
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    Particulates class III, chloride, and eliminates bad taste and odor
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    Filters up to 3,000 gallons; lasts for 12 months
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    Water flow rate from faucet:  0.5 gpm at 60 psi
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    NSF certified
  • Incredibly easy installation and filter replacement
  • Two-year limited warranty

8. GE SmartWater Inline Filter System Review:

GE SmartWater Inline Filter System won our eighth spot for its dedication to helping you enjoy purified water at your home. What makes this model quite wondrous is how easy it is to connect to fridges or icemakers with an existing water line as well as those without one. If you have the GE fridge/ice maker, the installation becomes even easier as they feature a space dedicated for this filter.

The filtration system features premium filters that are certified by NSF/ANSI to reduce the life-threating asbestos, lead, chlorine-resistant cysts, and up to 5 other contaminants that make your water unsafe for drinking. Keep in mind that these filters have a six months lifespan- the lifespan of a typical inline water filter.

Setting up this inline filter into your ice maker or ice maker line is super easy and fast. Likewise, replacing the cartridges is also easy as it comes with a "twist and lock" filter. No tools required for successful replacement.

Highlighted features:

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    Easily connects to existing icemaker/fridge water line
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    Premium filtration capabilities
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    Six months filter life
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    NSF/ANSI certified
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    -"Twist and lock" filter for easy replacement

9. Filtrete Universal In-Line Refrigerator Water Filter Review:

We’re almost nearing the end of our list. At this point, I’d like to introduce you to Filtrete Universal In-Line- a trusted model when it comes to cleaning your water and ice and giving them a great taste.

In fact, it reduces up to 99% of harmful elements in your water, including lead, cysts, chlorine odor and taste, rust, sediment, among other things.

To enable it to filter your water effectively, this inline water purification system comes with filters with 750-gallon filtering capacities. This is same as saying that it will filter your water for about six months.

 And just like all the other models that we have discussed on this list, it comes with a compact (5.6 x 5.6 x 9.1 inches) space-saving design to fit in any location you install it in.

The best part involves installing and maintaining this inline water filter. You can easily connect it between your existing inline water supply line and fridge, ice maker or water dispensing line.

When you want to replace the filters, the easy-peasy push-in method will let you do it in a snap! No need to hire a professional plumber to do the installation or replacement!

Highlighted features:

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    Reduces up to 99% water contaminants
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    Easy to replace filters
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    6 months; 750-gallon filters
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    Spacing saving design
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    Push fitting connections, mounting brackets for easy installation

10. LASCO 37-1829 Inline Water Filter Review:

Lastly, we have another product from LASCO- the LASCO 37-1829 Inline Water Filter- that also enjoys extensive usage in many homes for its excellent water filtration properties. You can trust it to remove the unpleasant odor and taste in your water as well as all the key impurities that make it unclean for consumption.

In addition to cleaning your water, this model also goes an extra mile and prevents scales buildup and corrosion of all the water consuming appliances in your home. How it does this?

 Well, it actively blocks all the elements that lead to corrosion and scales formation (hard minerals), with its carbon-phosphate filtering system. This is something you might not enjoy in other inline filters.

Installing this model is the easiest part. It comes with the 1/4-Inch OD Compression Fittings for easy, hassle-free installation. Plus it can also attach to the poly tubing, for even easier installation.

 Keep in mind that the filter can handle up to 1250 gallons of water in its lifetime, which translates to around 6 months of clean water for drinking.

Highlighted features:

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    Keeps off corrosion and scales buildup
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    Filters up to 1250 water gallons
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    6 months filter life
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    Easy installation
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    Removes bad taste and odor in your water

How to Buy an Inline Water Filter?

In this part, I’ll share with you a quick buying guide that I used to easily select the above 10 filters from a market filled with loads of inline water filters.

Let’s take a closer look at my selection criteria…


Before buying an inline water filter, you should ensure that it will do its intended job effectively. Not all filters will filter your water according to your expectations.

Don’t go for anything less than 99% effective. This ensures you get a top-performance model that supplies you with cleaner water free of contaminants, chlorine taste and odor, and with an improved taste.

Some models even come with WQS and NSF/ANSI certificate seals to prove that they work as per the manufacturer claims.

Filter Lifespan

As you know, one of the ways of making any filter work at its best is changing its fitters. The frequency of replacement depends on the model you buy.

That said, the period can range from 6 to 3 years or more.

The longer the period the better, as this will save you replacement costs for the new cartridges. Plus models with longer lasting strainers means they’re designed with quality materials.

Ease of Installation

Let’s face the truth. Nobody wants a filter that gives you headaches trying to figure out how to install it.

Therefore, it’s crucial that you check whether the model you’re planning to buy is easy to install. Ensure it comes with all the installation tools and manufacturer instructions that explains how you can set it up.

Also, ensure that replacing the filters in the unit you’re planning to buy is extremely easy.


If you buy your products by brand, this is your part…

As with all the other fields, there are top brands in this industry that have been in existence for years (probably decades) and know what it takes to build a quality filter that meets all your needs and expectations.

These brands include Culligan, 3M, GE, Watts to name but a few.

You’ll never regret buying from such names.

Installation Process of an Inline Water Filter

Usually, the manufacturers of inline water filtration systems ship their products with a set of easy to follow set of instructions on how to successfully install the unit in your water supply line.

Different models might require different installation methods, so you’d want to check the installation manual for your model.

Also, check the video to get an idea how a typical inline water filter should be correctly installed…

Frequently Asked Ques​tions

1. What’s an inline water filter?

An inline water filter refers to a water filter that you fix between your home water supply line and an appliance. This ensures that the water that reaches your appliance is filtered, cleaner and healthy for use.

2. Does an inline water filter require any maintenance?

Unlike most types of filters, an inline water filter is effortless to run and doesn’t require a lot of maintenance. The only thing you need to do to keep your filter running smoothly is replacing the filters after the period specified by the manufacturer. This can range from 6 to 3plus years.

3. Can I install an inline water filter on my own?

Yes! These filters are extremely easy and fast to install, and you can do it on your own without hiring an expensive plumber. Nearly all of them come with a set of installation instructions from the manufacturer which make the process easier.

Likewise, replacing the filter cartridges is extremely easy.

4. How long does it take to change the inline system filters?

The length of time it takes to change your inline water filter cartridges varies from one model to another. Most of the models, however, come with a filter that lasts for 6 months. You might also get a few models that have water filtering capacity expanding to 3-5 years.

Final Verdict

If you want to use pure water at your home while saving as much space as possible, I’d advise you to buy an inline water filter today. This filter is unlike other models in that it connects between your water line and water consuming equipment to help you filter your home water to the last drop. Besides, the unit is incredibly easy to install and requires very little maintenance.

Using my full buying guide above, you’ll get the most suitable inline water for your home water filtration needs and starts enjoying the convenience it comes with.

Likewise, you can order an inline water filter from the 10 top-rated models above found in many homes.

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