If you are asking “What is the best inline water filter for ice makers or refrigerators or faucets?”
Then you are in the right place.
Clean water is important to you, especially drinking water.
Inline water filters are affordable and effective in providing basic water filtration by getting rid of chlorine taste and odor, sediments, and more contaminants.
Whether you are using municipally treated water or well water, there is a best inline water filter for you.
I’ve searched, researched, compared, filtered, and tested over 50 inline water filters to find the best one for a specific task, such as best inline water filter for ice makers, best inline water filter for refrigerators, best inline water filter for washing machines, and more.
Disclosure: BrizFeel is a participant of Amazon Associate program.
Top 10 Best Inline Water Filter – Expert’s Picks
What is the best inline water filter?
Here’s the answer:
Why Use Inline Water Filters?
There’s a time where you don’t need a filtration powerhouse like the Reverse Osmosis system to perform certain tasks, such as basic water filtration for the refrigerator, ice maker, faucet, RVs, boat, washing machine, and dishwasher.
And that’s the reason why you need a single or double stage water filter.
It’s used when a higher direct flow rate and compact size are required.
You can install an inexpensive inline water filter before your refrigerator and ice maker to produce tasty cold water and ice.
You can get a budget one-time-use inline water filter for your RV when you are traveling for a few months, without spending a fortune on an expensive water filtration system.
The list goes on and on, there are so many occasions that you should use an inline water filter because of how great and convenient it is.
Do note that these water filters with a single water filter cartridge are not supposed to be used as a replacement for a multi-stage whole house water filtration system unless your water quality is excellent.
It’s an additional point-of-use water filtration system to further improve the water quality for specific purposes like ice making.
The 10 Best Inline Water Filter Reviews
Overwhelm with so many different models of inline water filters in the market?
No worry, I’ve done all the hard work for you.
Here are the top 10 best inline water filter systems for home, just pick the one that fits your requirements and purpose, these 10 are carefully picked from over 50 water filters in my review list.
1. Frizzlife MK99 Under Sink Water Filter – Best Inline Undersink Water Filter for Lead
- 0.5 Micron & 5 Micron 2-stage advanced water purification
- Removes 99.99% of lead, heavy metals, rust, chlorine, mercury, VOCs, carcinogens, turbidity, bad taste & odor
- Suitable for ice maker, refrigerator, sink, and bathroom
- High flow rate at 2 GPM
- Last up to 1,600 gallons or 2 years
- Direct connect
- Easy installation with quick-change twist-in design
- Fits both 1/2″ and 3/8” water line
- Built-in shut off valve at filter cap
The Frizzlife MK99 Under Sink Water Filtration System is a powerful 2-stage inline water filter that is capable of removing over 99% of contaminants like lead, sediments, chlorine, VOCs, and more while keeping all the essential minerals (eg: calcium, magnesium, potassium, phosphorus) in water.
The 1st stage is a 5-micron sediment filter that removes larger particles like sand and rust, and the 2nd stage is a 0.5-micron carbon block which is capable of removing over 99% of Lead, VOCs, Chlorine, and bad odor.
The inline filter comes with a built-in shut off valve, which allows you to replace the filter cartridge without shutting off the water supply.
Moreover, the quick change twist-in design makes the installation and filter replacement process a breeze, and you only have to change the filter cartridge inside the plastic container and not the whole plastic with filter, saving you the replacement cost.
The inline filter is compatible with both 1/2” and 3/8” water lines, suitable to use as an under sink water filtration system for faucet, refrigerator, and icemaker.
2. Woder WD-S-8K-DC Water Filtration System – Best Inline Water Filter for Municipal Water
- Ultra-high capacity
- Direct connect under sink water filter
- Removes 99.99% of contaminants like Chlorine, Chromium 6, lead, heavy metals, bad taste and odor, VOCs, and more
- Suitable for municipally treated water
- High water flow rate at 2 GPM
- Lasts for 3 years or 8,480 gallons of water
- WQA Gold Seal Certified to NSF/ANSI 42& NSF/ANSI 372
- Made in the USA
The Woder WD-S-8K-DC is a high-capacity inline water filter that removes 99.99% of common contaminants in municipally treated water while leaving the essential minerals like calcium, magnesium, and potassium.
It is certified to NSF/ANSI 42 for Chlorine, taste and odor, and NSF/ANSI 372 for lead-free compliance.
3. APEC CS-2500 Ultra High Capacity Undersink Water Filter – Best Value Inline Water Filter
- Effectively remove common contaminants like chlorine, lead, and heavy metals while leaving the essential minerals like calcium, magnesium, and potassium
- Ultra-high capacity filter
- Bacteriostatic to reduce heterotrophic bacteria
- Easy installation and replacement with the quick twist connection
- High water flow rate at 1.67 GPM
- Last up 5,000 gallons or 12 months
- Made in the USA
The APEC CS-2500 is an under sink inline water filter that is capable of removing the majority of harmful contaminants like chlorine, lead, iron, heavy metals, bad taste, and odor.
Its high capacity filter life allows you to enjoy clean and tasty water for a longer period before you need to replace the filter cartridge.
4. 3M Aqua-Pure Whole House Scale Inhibition Inline Water System AP430SS – Best Inline Descaler
- Includes Polyphosphates to prevent scale build-up in water heaters, boilers, and hot water appliances and faucets
- Easy cartridge replacement
- High water flow rate up to 10 GPM
- 304 stainless steel filter head
- Filter cartridge last about 6 months
- Certified to NSF Standard 42
The 3M AP430SS Aqua-Pure is a scale inhibition water treatment system that protects your hot water appliances like water heaters, boilers, hot water dispenser, dishwashing machines, clothes washers, showerheads, and faucets from scale build-up and corrosion.
The scale forming in the piping and appliances, and on the bathroom floor is mostly due to the water hardness like excess calcium and magnesium, these scales shorten the life of appliances and reduce the water pressure as the inside of pipes get smaller.
The Polyphosphates are used in the system to effectively bind calcium and magnesium minerals to reduce and prevent scale build-up as well as forming a thin protective layer on the metal surface to prevent corrosion.
5. Watts Inline Water Filter – Best Long-Lasting Inline Water Filter
- High capacity of 20,000 gallons
- Suitable for ice makers, refrigerators, sink, RV, boats, campers, and coffee makers
- 10-micron filtration size
- Reduce sediments, heavy metals, lead, iron, chlorine, bad taste and odor, and more
- High-performance 10” KDF inline filter (Kinetic Degradation Fluxion)
- Easy to install
- WQA certified against NSF/ANSI standard 372 and 42
The Watts Inline filter is a 20,000-gallon ultra-high capacity inline filter that is ideal for ice makers, refrigerators, coffee machines, RV, and campers.
The filter can effectively reduce chlorine, sediments, heavy metals, and more contaminants in water.
The Kinetic Degradation Fluxion (KDF) redox media is used to reduce heavy metals, chlorine, and hydrogen sulfide contaminants in water.
Besides, it can also reduce scale buildup in electric appliances and inhibits bacterial growth.
6. EcoPure EPINL30 Inline Refrigerator Filter – Best Inline Refrigerator Water Filter
- Removes sediment, chlorine, bad taste and odor from water
- Last for 5 years
- Easy to install and replace the filter cartridge
- Made in the USA
- Fits most brands of refrigerators like LG, GE, Whirlpool, and Samsung
The EcoPure EPINL30 is an inline water filter that is designed to provide clean water for your refrigerator and ice maker.
7. PureWater Inline Water Filter Kit for Ice Makers – Best Inline Ice Maker Water Filter
- Reduce sediments, chlorine, bad taste and odor
- Produce great tasting ice and water
- Tested and certified by NSF against Standard 42
- Quick-Connect fittings for fast installation and replacement
- A complete kit is included for ice maker
- Compatible with most ice makers
- Last for 1500 gallons or 12 months
This is a complete inline water filter kit for ice makers, which allows you to install it easily for your ice maker to start producing clean and tasty ice.
8. Camco TastePure RV/Marine Water Filter – Best Inline Water Filter for RV
- Reduce sediment, chlorine, heavy metals, bad taste and odor, and turbidity in water
- 20-micron Granular Activated Carbon (GAC) filter with KDF
- KDF media inhibits bacterial growth inside the filter
- With flexible hose protector
- Last for 3 months
- Great for RVs, campers, boats, gardening, and more
- Low lead content certified to NSF/ANSI 362
- Made in the USA
The Camco’s TastePURE RV/Marine is a 20-micron GAC/KDF inline water filter for outdoor water filtration use such as RVs, boats, and campers.
You may use this water filter at the campsites to block contaminants from entering your RV water tank and improve the water taste for drinking purposes.
The KDF media can protect the filter from bacterial growth and mold when the filter is not in use.
The filter also includes a flexible hose protector to minimize strain and kinking on connections.
It’s made in the USA certified for low lead content against NSF/ANSI 362.
9. Culligan IC 4 EZ-Change Inline Water Filtration System – Best Inline Water Filter for Chloramine
- Reduce chloramines, chlorine taste and odor, cysts, lead, mercury, MTBE, VOCs, and more
- Easy filter replacement with twist-in connection
- 0.5 GPM flow rate
- Filter cartridge lasts up to 500 gallons or 6 months
- Certified by IAPMO against NSF/ANSI Standard 42 and 53
The Culligan IC 4 EZ-Change is a premium Inline filter that provides clean and safe water for drinking, ice makers, and refrigerators.
The twist-on & twist-off filter mechanism makes the whole filter replacement process quick and easy.
The water filter is tested and certified against NSF/ANSI Standard 42 for the aesthetic reduction of chloramines, chlorine taste and odor, and nominal particulate Class 1, and Standard 53 for the reduction of lead, cysts, mercury, VOCs, MTBE, and Turbidity.
One filter cartridge can last for 500 gallons of filtration or 6 months.
10. Hydronix ICF-10Q Water Filter – Best Budget Inline Water Filter
- Coconut GAC filter
- Last for 2,000 gallons or one year of water filtration
- Easy filter installation with Quick Connect
- 0.5 GPM water flow rate
- Polypropylene material
- Certified by NSF for Standard 42
The Hydronix ICF-10Q is a ¼” quick-connect inline coconut water filter for water faucets, ice makers, refrigerators, and coffee makers.
The coconut shell GAC filter is effective in reducing chlorine taste and odor as well as other common contaminants from the water.
What Are Inline Water Filters?
Inline water filters are designed to provide basic water filtration with lower cost, smaller size, simple installation, and easy maintenance.
They are used in a wide range of home filtration applications such as faucet, refrigerator, ice maker, washing machine, coffee machine, water cooler, and garden.
Where to Use the Inline Water Filter?
The usage of inline water filters is versatile, you can use them for your water faucets, ice maker, refrigerator, coffee machine, water coolers, washing machine, and more.
Want crystal-clean ice cubes from your ice maker? Just buy the best inline water filter for ice makers!
Want clean and refreshing cold water right from your refrigerator? I’ve found the best inline water filter for refrigerators for you too.
You can also connect an inline water filter to your outdoor hose to water your flowers and plants, and wash your car.
How to Choose the Best Inline Water Filter [Buying Guide]
To better guide you in choosing the best inline water filter for ice maker, refrigerator, and faucet for your home, I’ve prepared this buyer guide for you.
This guide is written to help you understand more about different types of inline water filter so that you know which one is the best inline water filter for your house.
To make the right purchase, first, you have to know what you need.
Here are some of the important factors that you should think about before buying the inline water filter:
- Know your water quality
- Types of inline water filter media
- Contaminants removal
- Filter capacity
- Installation and replacement
- Price of the inline water filter
- NSF/ANSI Certification for the Inline Water Filter
Knowing Your Water Quality
Depending on where you stay, and what type of water source you use, the water quality will be different.
To decide on the best inline water filter for your home, you’ll need to understand the quality of your water, mainly what kind of contaminants are inside your water.
If your water quality is okay, you may choose an activated carbon inline water filter with micron-size 5 to 10.
If your water quality is moderately contaminated, then choose an inline water filter with higher filtration strength of 0.5 to 1-micron rating, such as Frizzlife filter, it’s the best inline water filter for under-sink use.
If your water contains a certain amount of heavy metals, then choose an inline water filter with KDF media.
If you are using chlorinated water, then an activated carbon inline filter is your best choice.
Types of Inline Water Filter Media
There are mainly 3 types of inline water filter media, which are:
- Activated Carbon Block (ACB) filter
- Granular Activated Carbon (GAC) filter
- KDF filter
The activated carbon block and granular activated carbon are similar media in different forms. Both of them are highly effective in removing chlorine taste and odor, chemicals, VOCs, and more types of contaminants.
The KDF filter is effective against heavy metals and many other contaminants. Besides, the KDF media can inhibit bacterial growth.
Types of Inline Water Filters
There are few types of inline water filters which are designed for specific purposes, such as:
- Under-sink Inline water filters for faucets
- Inline water filter for ice makers or refrigerators
- Inline water filter for RVs and campers
Under Sink Inline Water Filters for Faucets
These under sink Inline water filters are designed to be installed on the under-sink area to purify water flowing out from your faucets.
The filtered water can be used to wash food ingredients, vegetables, fruits, and dishes and even drink (if the water quality is good).
You may check out the best under sink Inline water filter here.
Inline Water Filter for Ice Makers or Refrigerators
These types of Inline water filters are made to attach to your ice maker or refrigerator easily to produce clean cold water and ice cubes.
Besides, they are easy to maintain and replace filter cartridges, as the maintenance work needs to be done indoor in your kitchen.
Inline Water Filter for RVs and Campers
Traveling with your RV? An active camper?
No problem, there are plenty of Inline water filters that are specifically designed for RV and campers like you!
This type of Inline water filter usually contains KDF media, which is great in water filtration and inhibits bacterial growth at the same time, so you can keep the Inline water filter after each use and continue to use it again on the next stop or next trip.
Here is the best Inline water filter for RVs and Campers.
The majority of the inline water filters come in either one-stage or two-stage water filtration.
Since most of them are built with an activated carbon filter which removes a majority of common contaminants like sediments, VOCs, and chlorine taste and odor, so what you need to consider is whether you need to remove certain contaminants like lead, heavy metals, and chloramines.
Next is whether you need a filter that contains KDF media to inhibit bacterial growth, like RV or camping activities which you may not use the filter for some time.
If you have more family members in the house, it’s better to pick a higher capacity inline water filter to last longer for each filter replacement.
Higher filter capacity means lesser filter replacement frequency.
Installation and Replacement
I bet you won’t want to hire a plumber to come over just to install a water filter right?
Luckily, there are plenty of inline water filters that use Quick-Connect or Twist-in Twist-out installation design, which make the filter installation and replacement process a breeze for all people.
All inline water filters featured in this review are easy and quick to install and replace.
Measure Your Pipe Diameter
Generally, there are 2 sizes of pipe, which are 1/4 inch and 3/8 inch in diameter.
So make sure you have measured the size of your pipe before ordering to avoid additional work and cost to buy additional fittings and adapters.
Price of the Inline Water Filter
The price factor is always a factor for purchase decisions, and no matter how cheap it is, consumers tend to get the best value off their bucks.
Sometimes, it’s not solely about the price tag (unless you really can’t afford it), it is more on the value.
The filtration performance, features, and capacity you get per a dollar spent is a more precise indicator for which inline filter you shall go with.
NSF/ANSI Certification for the Inline Water Filter
The two most common NSF standards for water filters are Standard 42 (for more than 90% reduction of chlorine taste and odor) and Standard 53 (for reduction of volatile organic chemicals, inorganic compounds, and heavy metals).
I can’t say the inline water filters without NSF certification are bad in quality or worse than those certified by NSF, because it’s not always true.
It’s not cheap to get NSF certification for a water filter, so the high cost may stop some water filter manufacturers from getting their products certified so that they can price their products cheaper.
But anyhow, the filtration capabilities of the NSF certified inline water filters are proven with official test results, which are safer and trusted choices for your family.
How Long Can Inline Water Filters Last?
Most water filter manufacturers stated the expected filtration capacity in gallons, which indicates how many gallons of water it can filter before replacement.
Some manufacturers only stated the expected lifespan in time, like 3 months, 6 months, and 12 months, which are less accurate because it didn’t factor in the water usage.
Some Inline water filters come with both lifespan indications like 1,000 gallons or 6 months, whichever comes first.
But the actual filter lifespan depends on the water quality as well, especially if you do not install a sediment filter before the inline water filter.
A more accurate way is to monitor the pressure drop and test the water with a test kit to decide when to replace the filter.
Should You Buy Inline Water Filters?
The answer is yes. Most water sources are contaminated, it is just a matter of more or less.
For your health, your family, your home appliances, fixtures, and pipes, this little investment is worth it.
Aside from being more affordable compared to other filtration systems like RO system, multi-stage filtration system, and whole house filtration system, inline water filters are also smaller in size and easier to install and replace.
Just make sure the Inline water filter you buy is good quality.
For quality assurance, you can pick from the top 10 list of best Inline water filters.
How to Install Inline Water Filters for Ice Maker, Refrigerators, and Faucet
Most inline water filters are designed to be installed easily on existing piping lines, but if you have no prior plumbing experience, it’s recommended to watch the instruction manual or online video before you start installing.
For some inline water filters, you just have to cut the existing line that connected to your faucet or refrigerator, install the inline water filter, and connect the lines to its inlet and outlet.
Here are the basic tools you need:
- Pipe cutter
- Drain bucket
- Fittings like converter and elbow
Have everything ready?
Follow these steps:
- Shut off your main water supply.
- Do marking on where you want to install the holder for the inline water filter.
- Drill a few holes and install the Inline water filter together with its holder.
- Cut the pipe and connect it to the inlet and outlet of the water filter so that the water must flow through the inline water filter.
- Tighten the nuts to prevent leaking.
- Clean the spilled water with a cloth and a bucket.
- Double-check every connection is tight.
- Turn on the main water supply and test run the Inline water filter to check is there any leaking.
- Let the water run for 20 to 30 minutes for flushing.
What Are Essential Minerals?
Essential minerals are something your body cannot produce naturally but are required for your body function to work correctly and stay healthy.
The water filter will remove most contaminants in the water while leaving the essential minerals.
These essential minerals are dissolved solids, which increase the total dissolved solids (TDS) value of water.
Some of the essential minerals are calcium, potassium, magnesium, sodium, phosphorus, and chloride
Calcium – Essential minerals in the body to build strong bones and teeth. It’s required in the physiological and biochemical processes of organisms and cells.
Potassium – It plays a vital role in maintaining a normal heart rhythm of your body and the pH balance of the blood. It’s also required to build proteins for your body.
Magnesium – Essential to support muscle and nerve functionalities and maintaining your heartbeats. It is also used by your body to support various biochemical reactions and boosts immunity.
Sodium – Required to maintain the right balance of fluid in the cells and stimulate muscle and nerve function. Sodium also supports the absorption of nutrients like glucose, amino acids, and chloride.
Phosphorus – Required to build strong bones and teeth, repair cells, and produce proteins for the body.Chloride – plays a vital role in the production of the digestive fluid in the stomach and balances the fluids in the body.
Summary (Comparison Table)
Here’s the comparison of the top 10 best inline water filtration system:
|Frizzlife MK99 Inline||1,600 G||Best Inline Undersink||Show|
|Woder WD-S-8K-DC||8,480 G||Best for Municipal Water||Show|
|APEC CS-2500 Inline||5,000 G||Best Value Inline Filter||Show|
|3M Aqua-Pure Inline||6 Mths||Best Inline Descaler||Show|
|Watts Inline Filter||20,000 G||Best Long-Lasting Filter||Show|
|EcoPure EPINL30||7,500 G||Best Inline for Refrigerator||Show|
|PureWater Inline||1,500 G||Best Inline for Ice Maker||Show|
|Camco TastePure RV||500 G||Best Inline for RV||Show|
|Culligan IC 4 EZ-Change||5000 G||Best for Chloramine||Show|
|Hydronix ICF-10Q||2,000 G||Best Budget Inline Filter||Show|
1. How long do inline water filters last?
Most inline water filters will last approximately 6 to 12 months, the high capacity version can last about 5 years. However, the actual filter lifespan depends on usages and contaminants in water.
2. When to change your water filter cartridge?
You should change the water filter cartridge when it reached the recommended usage lifespan or you found the water pressure had dropped drastically, which indicates the filter is clogged.
3. What do inline water filters remove?
The filters remove up to 99% of common contaminants in water such as sediments, chlorine taste and odor, VOCs, and heavy metals.
4. What is the best RV water filter?
It’s the Camco 40043 TastePure RV/Marine water filter.
5. What happens if you don’t change the water filter?
A clogged water filter will suffer a substantial loss in water pressure. Also, an overused filter cartridge may cause bacterial growth and alter the water taste, which does more harm than good.
6. Is inline water filter good?
Yes. They are excellent choices for point of use water filtration due to easy installation, compact size, and lower cost.
7. Do inline water filters reduce TDS?
Inline water filters are not used to reduce the TDS level but provide basic filtration while leaving the essential minerals in the water, and these dissolved minerals are part of the TDS.
Have you found the best inline water filter for your refrigerator or ice maker?
I hope my review does help you a little bit in making the decision.
For the best water filtration result, use them along with a whole house water filtration system.
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