Water Filter IQ

Top 10 Best Inline Water Filters in 2020

Best Inline Water Filters

Image result for verified checkmark Our guides are backed by data and real world testing.

Disclosure: This post may contain affiliate links. This means that at no cost to you, we may earn a small commission for qualifying purchases.


Obviously, you can easily clean your clothes by washing them but, how do you clean your water? While most people never have to worry about clean drinking water, some of us aren’t so lucky. Water is a universal solvent and most solids dissolve in it, partly or fully, which is why you need to filter the water and make it fit for use.

In this article, we’ll review the best inline water filter units and point out their features and flaws. Below is a table of the products we are reviewing.

Here Is The List Of The Best In-line Water Filter With Our Expert Review:


Frizzlife Inline & Under Sink Water Filter System

Featuring a 2-in-1 advanced filtration process, this device proves to be 99% effective in removing chlorine and lead based particles from the water. It does an equally good job of dealing with the presence of heavy metals and bad odor from the unfiltered water. If you are an environmentally-conscious person, this is a good inline water filter for you to have. It uses filter cartridges that can be easily replaced. You do not have to replace the entire component made of plastic. You just need to replace the filter cartridge fitted inside. The cartridges, manufactured by this brand, are of very high quality. Each cartridge is known to last for as long as two years even when it runs on full capacity on a regular basis.

It boasts of an auto shut-off design which ensures that the engine shuts itself down automatically once the filtration process is over. The twist-in design and the direct connect hoses help you install the filter in less than three minutes. The filter cap consists of an inbuilt shut-off valve which makes the cartridge replacement process easier. One of the primary reasons why this filtration system makes for a sound investment is that it is compatible with a wide range of water tubes. It offers a good flow rate and never causes any delay in procuring filtered water.

Inside the 0.5 micron filter, the water goes through two stages of purification. The filter is adequate at removing all kinds of contaminants including heavy metals, chlorine, lead, rust, mercury, carcinogens and more. The package also comprises of converter fittings that enable you to install the filtration system directly to the water line or the faucet beneath the kitchen sink. The company also provides an installation video which makes it easy for you to set up the whole unit together. After the filtration process, the tap water produces water that is as fresh as spring water.



Cartridges are of high quality and can be replaced easily

No plumbing is required during the installation process

The 0.5 micron water comes with the most advanced technology

Apart from removing impurities, it helps the water acquire a good taste


Regular cleaning is required for proper functioning


Check Latest Price


Waterdrop 10UA Inline Water Filter System, 8K Gallons

This water filter system has been specifically designed to treat the water coming from municipal water lines. As one would know, the water sourced out from such places contains a large number of impurities, including the kind which is very hard to eliminate. This filter is very powerful and even if you use it regularly to purify municipal water, it can last for as long as twelve months. During this time, it can deliver around 8,000 gallons of fresh water. After the cartridge has exhausted itself and is not as efficient as it used to be, you can get it replaced easily.

The device has several efficient components like the activated carbon block filter which contributes towards thorough cleansing of the contaminants present in the water. The filters are durable and devoid of BPA and lead based material. It has been tested and certified by the Water Quality Association and therefore, there should be no doubt about its quality. The installation process is hassle-free and easy. The only thing you need to remember during the installation process is that the system should only be linked to a supply unit providing cold water. You get push-to-connect fittings which will enable you to finish the installation process as quickly as in three minutes.

The filter registers an impressive flow rate of 2 GPM at 60 psi. The system is as suitable for a large household as it is for an office based setup or a commercial enterprise. Being a device that does not need electricity to run, it saves you some money on your monthly electricity expenditure. You also save water as the filter does not produce waste water. The device is quite light-weight and compact. While setting it up in the kitchen would be a good option, you can install it elsewhere too. The water produced from this device can be used for multiple purposes like cooking, drinking, cleaning, washing and skincare.



The water passes through a five-stage filtration process

Economical and environment-friendly

Registers a fast and stable flow rate of water

It takes around three minutes to install and three seconds to replace the filter


Can be linked only to a cold water supply unit

Available in only one color


Check Latest Price


3M Aqua-Pure Whole House Scale Inhibition Inline Water Filter

Polyphosphates are one of the major components this device is made of. The presence of these elements helps build up scale in water heaters and boilers. It also contributes significantly towards increasing the longevity of water heaters and appliances like pipes, showerheads and faucets which use hot water extensively. Replacing the water cartridge is very easy and maintaining the device is a hassle-free process. The stainless steel head can be conveniently fixed to copper pies you have at your disposal at home. It is made of corrosion resistant material that ensures durability.

It offers a pressure range of 25 to 125 PSI and functions smoothly within a temperature scale of 40 to 100 degree Fahrenheit. Its capacity makes it ideal for large households and is affordable enough to be purchased by a small family. It is built with high-quality components tested and approved by NSF International. The filter has a flow-through design that facilitates smooth movement of water and leads to minimal pressure loss. The NPT connections offer a lot of flexibility to the plumbing process.

At 10 GPM, it offers one of the best flow rates by any water filters in the market. With regular usage, a cartridge would last for around six months. If you need a good filter to purify water that would be utilized in washing dishes or clothes, this is a good device to have. It processes hot water very well and therefore, is an apt filter for these purposes. Even if you need a filter primarily for your drinking water needs, this would be a good buy. This device is also widely used in scientific labs and research centers to segregate contaminants from untreated water.



Very efficient at filtering hot water

Made of corrosion-free material that ensures durability

The stainless steel head has been designed to make the installation process easy

Produces clean water by keeping your utility preferences in mind


Clogging issues might occur while using it in shower heads


Check Latest Price


EcoPure EPINL30 5 Year in-Line Refrigerator Filter-Universal

A lot of people become apprehensive of investing in an inline water filter as they fear it will not be compatible with an old device at home. If that is what worries you, you can safely invest in the EcoPure EPINL30 Refrigerator Filter. You can attach it to an old refrigerator that has been in use for years and expect it to deliver optimum performance. It is known to be compatible with most of the refrigerators and ice making machines out there. The filter is very powerful and removes the smallest impurities and the heaviest particles with effortless ease.

The brand EcoPure has been in existence for more than a hundred years and that is the reason it is trusted by millions of people across the globe. The fact that it has been around for so long speaks volumes about the quality of its products. Every filter goes through a series of quality checks and once it is deemed to be completely safe and defect-free, it is brought to the consumer. Its longevity is one of its biggest selling points. It is priced slightly higher than regular inline filters but its durability more than makes up for it. While an average filter needs to be replaced once every six months, this filter is made of superior material and lasts for as long as five years before requiring replacement.

The filtration system boasts of a slim but robust design that has been carved out of the heavy metallic body it is made up of. Its parts are manufactured and assembled in the USA under the watchful eyes of technical experts. It is compatible with the refrigerators manufactured by all the leading brands like LG, Frigidaire, Whirlpool, Samsung, etc. Even older models that are devoid of the filter compatibility feature are compatible with this inline water filter. Installing this system can prove to be a bit difficult for those who do not possess basic DIY skills. You will get all the parts and components required for installing the device in the package but you might need the help of a technician to initiate the process.



The filter lasts for five long years

Removes bad odor and neutralizes the taste of the water

Compatible with most refrigerators including the older models

The micron-level is extremely efficient at determining the size of particles


Need technical support during the installation process

Slightly expensive


Check Latest Price


Inline Water Filter Kit for Ice Makers

While the PureWater inline water filter produces purified water for every single purpose you can think of, it is regarded as one of the most efficient inline filters for ice makers. One important reason behind its reputation is the fact that is known to add several years to the life of your water appliance. It is an affordable device that is very easy to install. While it is great for personal use, if you are planning to set up a small cold beverage store, you can use it there as well. It is compatible with most ice maker brands and competent at removing contaminants of all kinds.

This water filter produces 1500 gallons of purified water on a regular basis and the filter registers smooth operation for at least a year. When you test the filter, you realize it is very good at removing chlorine, fluoride, bad odor and neutralizing the taste but not very effective at eliminating the smaller particles present in the water. The filtration system comes in a kit that has all quick-connect fittings that will enable you to install the system easily. You do not have to procure additional tools or seek professional help for the same.

It is considered to be one of the best filtration systems when it comes to removing chlorine content from the water. It also contributes towards improving the flavor of the water. You can use the filtered water produced from it for your every day drinking needs or to make different kinds of beverages. It has a very interesting feature which makes it further suitable for ice makers. It helps in clearing up the haziness you find in most ice cubes. Another factor that makes it one of the most sought after products in its category is the lifetime warranty it offers on parts and labor. You also get lifetime telephonic technical support from the company.



Compatible with most ice makers available in the market

Reliable performance and long-lasting

Lifetime warranty on parts and labor

Tested and approved by NSF/ANSI


Not very good at removing smaller contaminants

Can be used with refrigerators and ice makers only


Check Latest Price


AQUACREST GXRTQR Inline Water Filter, NSF Certified

Aquacrest has been manufacturing aftermarket water filters for several years now. If you are using this water filter for the first time, you might want to visit the company’s official website which has a plethora of information about all the products it manufactures. This inline water filter shows a very high rate of efficiency when it comes to removing heavy metals and chemical substances from the water. Usually, there is a lot of hassle involved in replacing refrigerator water filters but replacing cartridges of this filtration system is a very smooth process.

The filters are certified by NSF/ANSI and are manufactured in China. The cartridges are filled with activated carbon which is derived from coconuts. Activated carbon is also the most predominantly used filtration media in Aquacrest filters. The product description features three different types of NSF certifications – NSF 42, NSF 53 and NSF 372. NSF 42 is certified for filters that prove to be effective in chlorine reduction. When a product is NSF 53 certified, it means it does a good job of removing lead from the water. NSF 372 is a guarantee of the water filter being devoid of lead and other similarly harmful materials.

The company has a very good customer support team that will assist you after buying the product. There is an email address and a toll-free number which will help you to share your grievances at any hour of the day. Installing this device is a cakewalk. When you need to replace the filter, observe the positioning of the original filter carefully. That will help you understand the process and make things easier for you. This filter not only augments the taste of your drinking water but improves its appearance too.



Excellent customer service support

Has three NSF certificates

One of the top-rated and most preferred refrigerator filters

The replacements filters are of very good quality


Leakage issues

Not compatible with many refrigerators


Check Latest Price


Camco 40043 TastePure RV/Marine Inline Water Filter with Flexible Hose Protector

A good water filter should not only be effective at removing pollutants but also at getting rid of bacteria and germs that find their way into untreated water. The Camco 40043 marine water filter does exactly that. It is designed to deal with impurities of all types. The filtration system is designed to remove particles that are 20 microns in size or bigger. It is made of activated carbon which is very powerful and eliminates substances like hydrogen sulfide and chlorine in no time. One of its most attractive features is the Kinetic Degradation Fluxion, a filtration material that initiates a chemical process that helps in eradicating impurities from the water.

It is a very compact device and that helps you in carrying it or placing it anywhere you like. You can link it to the water supply line in your house very easily. Apart from using it in your home, you can carry it to an outdoor location as well. If you are camping or on a trekking trip, you just need to have a hose to attach the filter to. The hose will provide you water at a very good flow rate. Untreated water from any source is not safe for drinking. When you are traveling or camping, you might find water in several places but you would need a filter to purify it. You can also use it to purify the water and water the plants in your garden.

You get a hose protector with the kit which is very flexible and convenient to use. It has a firm grip made of rubber that helps you linking it to a faucet. When a water hose suffers from kinking, there will be an interruption in the water flow. To avoid that from happening, you need to use this hose protector. It is very easy to attach this filter to a hose or any external connection. The manufacturer offers a year-long warranty on components and a 30-day labor warranty.



The installation process is quick and easy

Compatible with most hose based connections

The wide design of the body facilitates a higher water flow rate

The hose protector helps reduce pressure between the filter and its connecting device


Water leaks at times

Not suitable for a large household


Check Latest Price


DuPont WFPF13003B Universal Whole House Water Filter

The DuPont WFPF13003B filter comes with a plethora of high-utility features and that is what makes it a good device to invest in. You have the option of installing a UV purifier along with this filter. Both devices will operate together and produce high-quality and clean water. If you install a UV purifier, you would not be required to carry out a separate chlorination process. The installation process is very easy and even the ones who do not possess basic DIY skills can do it without any difficulty. A manual is provided to help you with the process of installation.

The 5-micron filter system makes the water go through two phases of filtration which ensures that no impurities remain in it by the time it comes out of the tap. It removes all the toxicants but makes sure that the essential minerals do not get washed away. This filter registers a flow rate of 5 gallon per minute and can deliver 15,000 gallons of fresh water before it needs to be replaced. You get a three-year warranty on the product which is more than what most manufacturers offer.

For an inline water filter, the device has a moderate size and will not take up a lot of space in your kitchen area. Many filters of a similar size and capacity are designed for personal or limited use but this one is capable of providing fresh water to a regular household. Apart from getting fresh drinking water, you also get water for your other needs like taking a shower or washing clothes and dishes.



Affordable and portable

Includes a filter wrench

Can be used along with a UV purifier

Three-year warranty is provided to the buyer


Plastic thread

Low water flow rate


Check Latest Price


AmazonBasics Inline Water Filter with Flexible Hose Protector

If you have been looking for a water filter specifically for outdoor use, look no further than the AmazonBasics inline water filter. This water filter which comes with a hose protector can be easily linked to a faucet or water hose and then it will purify the water that will pass through it. In the kit, you get a standalone inline water filter and a hose attachment. The filter has been designed with Kinetic Degradation Fluxion technology. It is a chemical formulation that has a mix of copper and zinc and utilizes a process called redox to eliminate mercury, hydrogen sulfide, chlorine, iron lead and other substances from the unprocessed water.

The 20-micron filter is very effective at removing sediments and curtailing bacterial growth. It also helps in eliminating bad odor, chlorine content and heavy metals from the water. If you are going out for a few days for camping, this is a device you can carry along with you. It will ensure that you never run out of filtered water during the time you are out. The filter is known for its durability and will never disappoint you when it comes to its performance.

The filter is in the shape of a bottle and is very easy to carry around. If you have suffered from some disease on account of poor water quality in the past and are cautious about the kind of water you get to drink outside, you must carry this filter to get rid of all those worries. You can simply put it in your bag and get going. You get a one-year limited warranty on the product and easily reach out to the technical support team when you need some guidance or help.



One of the best water filters for outdoor use

The hose attachment is flexible and easy to use

Lasts for a very long period of time

Can be connected to a faucet or garden hose conveniently


Not very good at softening hard water


Check Latest Price


Inline Water Filter, Membrane Solutions 10″ X 2″ with 1/4″ Quick-Connect Water Filter

The Inline water filter can be used to purify water that is utilized by refrigerators, coffee makers, ice makers, sink faucets, drinking water fountains, water coolers and several other appliances. It is a very good device for those who wish to own a multi-purpose filter. It is compatible with most refrigeration systems and it does not take much of an effort to fit it with an external device. The activated carbon cartridge helps in eliminating chlorine, sediments, bad odor and organic chemicals from the water.

This filter is made of eco-friendly materials and is energy-efficient. The outer surface is built with high-quality polypropylene and the inner surface is made of coconut shell carbon. The microfiber, present at both the ends of the filter, prevents the leakage of carbon content apart from ensuring that it lasts for a longer period of time. The installation process is very smooth and convenient. You can connect the carbon filter to the water line. After that, you need to switch off the water supply. Then, remove the old filter and slip in the tubes in the rear end of the new filter.

The 5-micron filter removes contaminants effectively and ensures that the water tastes fine. The filter lasts for around twelve months. You can reach out to the customer support service to help you in replacing the cartridge. It can deliver approximately 300 gallons of water before it needs to be replaced with a new filter.



Produces purified water that can be used for different functions

Environment friendly and energy-efficient

The installation process takes very little time

Portable and easy to carry around


Damaged parts are difficult to procure


Check Latest Price

How an Inline Water Filter Works?

The best inline water filters fall into the class of physical filters that sieve out large and small particles from water. This filter work using adsorption – a process of filtration that uses carbon.

In this process of filtration, the particles stick to the carbon pores – usually referred to as activated carbon. Additionally, charcoal, coconut, and ceramic are other materials used in inline water filters.

Inline water filters are connected inline with water sources and as the water passes through them, they filter out particles which include:

  • Aluminum
  • Cadmium
  • Heavy metals
  • Hydrogen sulfide
  • Iron
  • Lead
  • Mercury
  • Glyphosate
  • Chromium 6
  • Bad taste, etc.

Besides, the best inline filters not only filter water but adds calcium, sodium, potassium and magnesium ions nutritionally beneficial to the body. Also, it regulates the pH of water which provides clean cooking or drinking water to large and small households.

Benefits of using inline water filters

Do you trust your water source enough to risk drinking water without any filtration? Assuredly, I doubt you do. Besides, even if you trust the water, the best inline water filter improves the taste of water and also keep you safe from harmful contaminants.

These filters offer great benefits to your health and are simpler to install and maintain. Below, we’ve listed some of the benefits of using inline water filters.

Multiple application

Most inline water filters have more than one applications and can be connected to ice makers, kitchen taps or refrigerators. Also, the Bluonics Under Sink inline water filter can be used as a stand-alone under sink filter.

Easy to replace

The beauty of an inline water filter is that it is very easy to replace after about 6 months depending on the type of filter. They usually have a quick-connect fitting or a push fitting that makes the replacement process very easy.

Besides, there is always an arrow on the body of the filters indicating the direction of water flow and the filter. However, we did come across a unit that had no arrow marking to indicate the direction of flow – pretty bad mistake on the manufacturers part.


Admittedly, inline water filters are known to be durable and last up to 6 months before needing any changing. However, some units like the EZ-FLO 60461N In-Line Water Filter and the Woder 10K-JG-1/4 Ultra High Capacity Inline Water filter has a filter life of 6 and 5 years respectively.


Generally, inline water filters cost less than $100 which is very affordable for most households that want to stay healthy and enjoy clean water. In addition, unlike other water filters, inline water filter does not have any pressure specification although they are known to work best with water that has low-pressure.

Buying Guide: Best Inline Water Filter

No doubt you’re ready to buy an inline water filter. But before you make up your mind on the best inline water filter to buy, there are some key things you should consider. We listed some of them below.

First, is the filter lifespan of the unit you want to buy.

Filter life

How often would you want not change your Inline water filter? However, the best inline water filter has a minimum filter low of 6 months and a maximum filter life of 5 years. So, it’s now left for you to decide but in our opinion, an inline water filter with 1 years filter lifespan will serve you well.

Filter type

The best inline water filters clean water using materials such as carbon, ceramic and coconut. However, an activated carbon filter is more common than the other materials and provide fresh, clean water. Also, a ceramic inline water filter is good too likewise the coconut Inline filters.

Thus, whichever material you choose, it will definitely provide you with clean water.

Flow rate

The flow rate of the inline water filters is affected by the flow rate of your water source. Moreover, some inline water filters have a higher flow rate than the others because of their large valve opening. Check the flow rate or the valve opening of your inline water filter before you make the purchase.

However, most inline water filters have a flow rate of 3 GPM which is moderate. Love something higher? Check our last reviewed inline water filter above.


Without a doubt, some inline water filters are more expensive than the others but, this doesn’t mean they perform better than the cheap inline water filters. Customer reviews and reviews such as ours, are the best way to spot a cheap but, efficient inline water filter.

Frequently Asked Questions About Inline Filters

1) How does an inline water filter function?

An inline water functions by attaching itself to a dedicated water supply. If an individual is using it at his home, he will link it to the water supply that is responsible for providing cold water through the taps in the kitchen, bathroom and other areas. The inline water filter is linked to the water pipe which is placed under the sink. When untreated water goes through the ceramic candle, it is purified and then what eventually comes out of the tap as filtered water. 

2) What are the advantages of using an inline water filter?

Most inline water filters are extremely efficient at removing contaminants from the water and making it suitable for consumption. Inline water filters are fitted under the counter and that helps you in saving a good amount of counter space in the kitchen. They work round the clock so you are not required to refill containers or do something to start the filter. These water filters are adequate at eliminating impurities like chemical substances, heavy metals, bacteria, germs etcetera from the water. Inline water filters are designed in a way to save space, last long, be energy-efficient and perform their function well. 

3) How does one install an inline water filter?

Inline water filters need to be linked to a counter-top tap which it is compatible with. It could be a cold water tap that works as an add-on device to the overall tap set-up. Or, it could be a mixer tap that produces cold, hot and purified water. Most of the manufacturers provide a manual and sometimes, a video tutorial which helps you go through the entire process step-by-step. Most inline filters are very easy to install. If you face some difficulty, you can seek the services of a professional. Most filters last for six to twelve months. Once they have exhausted their capacity, you can get them replaced with new ones. Replacement of cartridges is an easy and hassle-free process. 

4) Why should one buy an inline water filter?

There are different kinds of filtration systems available these days and it is natural to ask this question. Inline water filters are the best option for small families or for those who are on camping trips, treks or travel frequently. A lot of people prefer inline water filters over other filters as these filters can be attached to the tap they already have in their kitchen. You do not have to invest in an extra tap. These are far more cost-efficient than other types of filters available.

Final Words

This review is an eye-opener to the best inline water filters available and shows how durable and efficient they are. Your body will definitely thank you when you get any of these filters and start drinking fresh, odorless, and clean water. Also, they are easy to install and replace so, there will be no need to call a plumber for replacement.

Get the best inline water filter today and drink quality water always.

Add comment