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5 Best Inline Hard Water Filter for Washing Machine in 2023

Best Inline Hard Water Filter for Washing Machine

Hard water stains clothes and causes damage to appliances such as fridges and dishwashers. Hard water is not only unsightly, but it can also cause a variety of problems in your home. If you want to combat these issues, consider installing an inline filter inside your washing machine which will help remove contaminants like calcium and iron from the water as it goes through.

There are many benefits of installing an inline filter inside a washing machine, including reducing calcium buildup that could potentially clog the pump or valve from corrosion. The best filtering systems will work with both electric and gas models so there is no need to worry about compatibility.


Rank Product Name Key Features Pros Cons Amazon URL
1 Inline Water Filters B0013TM4KQ Washing Machine – Low-cost and easy-to-use filter
– Traps particles larger than microns
– Made of poly fabric and plastic
– Fast snap pipe connection
– Easy installation
– Removes sediment, chlorine taste, and odor
– Reusable poly fabric filter
– Affordable

– Easy to clean and maintain

– Not suitable for high-pressure water

– Reduces water flow rate by 10%

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2 AQUSTAR Green Line Laundry Filter Housing – Top-quality product
– Easy navigation and quick filter replacement
– Transparent filter body
– High-pressure water switch
– Minimal installation
– Two filters: sediment and softener
– Does not reduce water pressure

– Easy installation and filter replacement

– Adapter compatibility issues

– Sizing issues

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3 Inline Water Filters 84470 Washing Machine – Easy installation
– Captures particles before entering the intake valve
– Designed for 85470 washing machine filter
– Five-stage filtration process
– Performs well in hard water conditions
– Protects washing machine from contaminants

– Long-lasting filtration

– Expensive compared to others Check Price on Amazon
4 Amazon Basics EWF-8056-2 Inline Water Filter – Removes bacteria and silt
– Suppresses harmful substances
– Two filters in one package
– Includes KDF technology and 20-micron sediment filter
– Durable and long-lasting
– Cost-effective

– Easy installation

– Made of plastic  – Not reusable Check Price on Amazon
5 General Pump 100649 Brass Inline Water Filter – Easy-to-use and durable
– Low-pressure stainless filter
– 1/2″ NPT outlet
– Easy-grip nut for installation
– Transparent plastic filter body
– Disassembles for easy cleaning
– Protects pumps from contaminants

– Easy installation and maintenance

– Adapter not included Check Price on Amazon

Can I add a filter to my washing machine for hard water?

If you’re dealing with hard water, one of the best things you can do is add a filter to your washing machine. This will help keep your clothes looking good and protect them from the damaging effects of hard water. There are a number of different filters available on the market, so it’s important to choose one that fits your needs.

Hard water can cause clothes to become dull and tear. That’s why it’s important to use a softener if you have hard water in your area. Soft water is gentle on clothing and helps preserve its color and integrity over time.

If your washing machine doesn’t have a built-in softener, you can add a filter to help soften the water. This will help protect your clothes from becoming damaged by the harsh minerals found in hard water. vinegar can also be helpful in dissolving residues left by soap and detergents, resulting in better color clarity and protection from hard water damage

Do inline water filters work for hard water?

Yes, inline water filters work for hard water. Hard water is simply water that has high mineral content. This can include dissolved minerals like magnesium and calcium, as well as metals like iron. All of these elements can cause problems in your home, including build-up on taps and fixtures, cloudy or stained glassware, and scaling on kettles and coffee makers. Inline water filters are granulated activated carbon filters and will remove many impurities found in drinking water. They are permanent fixtures that can be installed on your kitchen or bathroom countertops.

Signs a washing machine needs an inline water filter

There are several signs that a washing machine needs an inline water filter. One sign is when you feel sand-sized particles inside the door seal. Another sign is if your well water comes with high sediment loads. If your washing machine has any of these symptoms, it might need a new filter: no water coming in, slow filling speed, the filter needs to be cleaned regularly, or it develops rust.

Wear and tear on a washing machine can cause several issues. Sediments that enter your washing machine can scratch up the drum, and damage plastic parts. Rust stains appear as clumps on clothing. When there is no whole house filter in place that would catch sediment, it appears in your washing machine or on your clothes.

5 Best Hard Inline Water Filter for Washing Machine in 2023

1. Inline Water Filters B0013TM4KQ Washing Machine

The Inline Water Filter is a low-cost, easy-to-use filter. It can eradicate the need to clean the intake valve filter on your washing machine because it traps particles bigger than microns in scale during the filtering phase. This inline water filter is made of poly fabric and plastic.

This filter comes with a fast snap pipe connection to the entering water faucet so you can detach it and move the hose over to a convenient location, unhooking and handling it with the filter. The installation process is effortless

The Inline Water Filter is the best-selling filter on the market for a reason. It is very affordable and easy to clean. Additionally, it removes sediment, chlorine taste and odor from your water supply. First and foremost to use this filter, you will need to remove the poly fabric filter from the plastic housing.

Afterward, it is recommended that you clean it and use it again on other occasions. Just make sure not to overtighten the threads of the plastic threaded housing when you put it back together.

Kindly note, the inline water filters B0013TM4KQ are not suitable for high-pressure water; they only work with low-pressure water. Additionally, the use of these filters will reduce your water sources to approximately 4.5 GPM. Most importantly, your water sources typically experience a 10% reduction in flow rate when using this product.

On the whole, the poly screen filter can help to remove massive contamination. However, it is inconvenient because you have to disassemble the machine and clean every second or third load of laundry. Additionally, it filters out debris; but at the cost of time and effort.

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2. AQUSTAR Green Line Laundry Filter Housing

The AQUSTAR Green Line Laundry Filter Housing is a top-quality product that can be used in any washing machine. The unit is easy to navigate and the filters can be replaced quickly. The product is ideal for clothing and undergarments, as it removes all types of dirt, lint, and debris.

This filter is transparent and can be monitored on daily usage. It also includes a high-pressure water switch, which makes it easy to use with no risk of failure. This filter requires minimal installation and doesn’t require any equipment removal.

This is a top-rated filter for washing machines. It features two filters: sediment and softener. The sediment filter removes dirt, excessive metals, and other contaminants while the softener filter reduces limescale build-up and bad odors. In addition, this filter is optimal because it does not reduce water pressure or clog up the pipes.

The AQUSTAR Green Line Laundry Filter Housing is a transparent housing body that is color-coded for easy installation. This housing system does not require any equipment and the housing body can be used to replace the filter.

The downside to this product is that it can be challenging to find an adapter that fits in your washing machine if it has a unique size or shape. Another potential downside is that this brand may not go well with you if the size does not fit your needs – so always double-check before making your purchase.

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3. Inline Water Filters 84470 Washing Machine

If you’re looking for a water filter to protect your washing machine, this inline water filter is an excellent option. It’s easy to install and can be quickly put into use. The filter also captures particles in the water before entering the intake valve’s screen, preventing them from accumulating and reducing maintenance costs over time.

This replacement cartridge is designed specifically for the 85470 washing machine filter, so you don’t have to keep buying new ones once these run out. Additionally, this filter has a five-stage filtration process that will keep your washing machine running smoothly without any problems. Plus, it performs well in hard water conditions – which means it should last for many months without needing replacement parts.

Although this product is expensive compared to some others on the market, its brand quality gives customers a top-notch service experience they won’t find elsewhere

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4. Amazon Basics EWF-8056-2 Inline Water Filter

The Amazon Basics inline filter is one of the most popular water filters on the market. It helps to remove bacteria and silt, while harmful substances are suppressed. This makes it a great choice for washing machines with hard water.

It is the only water filter that offers two water filters in one package – making it a cost-effective option. The chlorine filter for washing machines reduces odor and inhibits bacterial growth. Additionally, the hose protector is not included but it does come with KDF technology and a 20-micron sediment filter.

The inline filter is affordable and easy to install – making it an ideal choice for anyone looking for an easy way to improve their machine’s performance! It’s durable, lasts a whole year, and can survive heavy metals or contaminants.

This Amazon basics inline filter is made of plastic and not reusable; however, its long service life means you’ll get plenty of use out of it.

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5. General Pump 100649 Brass Inline Water Filter

The General Pump 100649 Brass Inline Water Filter is a great choice for people looking for an easy-to-use and durable water filter. This low-pressure stainless filter protects your pumps by removing contaminants from the incoming water supply. It also comes with a 1/2″ NPT outlet, which makes it perfect for use with pressure washers. Additionally, the filter can be disassembled for easy cleaning.

It easily fits female NPT fittings and has a low-pressure stainless steel filter that protects pumps from contaminants. Plus, the easy-grip nut makes installation a breeze. It is made with transparent plastic so you can easily see when the filter needs to be cleaned.

Second, it fits with other adaptors very easily. Third, it only weighs 10.86 ounces which makes it easy to transport and store. Finally, it disassembles for easy cleaning.

This General Pump 100649 Brass Inline Water Filter is a top pick for people who are looking for a hard water filter to attach to their washing machine. It is easy to install and can be reused and washed as needed. The only downside is that the brand does not come with an adapter, so you will have to purchase one separately.

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Is a Water Filter Necessary for a Washing Machine

There is no definitive answer to this question. Some washing machines come equipped with an inlet filter while others don’t. The presence or absence of a filter doesn’t make or break a machine, it just affects how well the machine can clean clothes.

In general, though, a water filter can help prevent your clothes from being washed with contaminants. This is because the filter helps to remove larger pieces of dirt and grit before they have a chance to enter the washer drum and damage your clothes. A more efficient laundry machine can lead to a softer, cleaner clothes load without all the extra hassle!

How to install water filters for a washing machine

Installing a water filter on your washing machine is an easy way to improve the quality of your clothes. Not only will your clothes look and feel better, but you’ll also be doing your part to protect the environment by using less water. In this article, we’ll show you how to install an inline water filter on your washing machine.

First, find a suitable location for the filter. It’s best to install it in line with the hose that connects the washer to the faucet. If you have a whole-house filtration system installed, then you can skip this step and install the inline filter in line with that system instead.

Next, remove the old filter (if there is one) and connect the new one using either screws or clamps. Make sure that it’s securely attached so that it doesn’t come loose during use.

Now turn on the faucet and run some cold water through the hose until it’s clear. This will help flush out any debris or sediment that may have built up in the line over time.

Finally, test out your new filter by running a load of laundry!

Features to consider when choosing an inline water filter for your washing machine

Filter media and filtration stages

When selecting a filter for your washing machine, it’s important to consider the type of media used and the number of filtration stages. Activated carbon will remove the majority of chemicals, but it is not effective against heavy metals. The type of filter media used for different purposes is typically a blend to fulfil multiple needs.

There are several types of filtration that should be considered when selecting a filter:

  • Carbon filters remove heavy metals and other impurities, like lead and mercury.
  • The granular filter is good for houses with water that has high levels of chemicals and heavy metals.
  • The process called “micro-filtration” makes the granular filter more effective in filtering out impurities like chlorine from tap water.
  • A KDF water filter needs to be changed less often than other types of filters. The media used in a KDF water filter blocks out viruses and removes heavy metals, chlorine, and hydrogen sulfide from the water.

An inline water filter may reduce limescale build up over time but this should not be its only consideration when purchasing one – look for an inline water filter that also reduces chlorine exposure

Filter life

When looking for an inline water filter, it is important to consider how long the filter will last. This is determined by the number of gallons the filter can process before needing to be replaced. Most filters have a lifespan ranging from weeks to months, so it is important to choose one that suits your needs.

Flow rate

When looking for a better filter, find one that has a GPM figure of at least 1000. Inline water filters are often popular because they aren’t as finicky with low flow environments. This figure will tell you how many gallons will flow through your inline water filter each minute.


When choosing an inline water filter, it’s important to consider the dimensions of the product. Some filters are small and lightweight, while others are larger and heavier. Make sure the filter you choose is a perfect fit for your washing machine!


The weight limit for these inline water filters varies depending on what you are using them for. If you are using the filter to clean your washing machine, then the weight limit is approximately 10 pounds. However, if you are using it as a drinking water filter, then the weight limit is much higher and depends on the type of filter that you choose.

Installation, fittings and hoses

Make sure that the filter comes with all necessary fittings and hoses so it is easy to install.


When purchasing an inline water filter, it’s important to consider the warranty that comes with the product. If you’re considering spending a lot of money on your filter, it might be worth adding an attached warranty.

How To Clean a Washing Machine Water Filter

You can clean your washing machine water filter by opening the cover on the front of your washer. The cover is usually located near the bottom of the machine.

Once you have located the cover, you will need to remove it in order to access the filter. This is usually done by releasing a clip and pulling it off. The filter itself may be difficult to remove, as it is often clogged with dirt and debris. You may need to use a screwdriver or other tool to dislodge any material that has built up on the screen.

Make sure that you clean both sides of the screen and that all debris is removed before replacing it and closing the cover.



Hi Guys, Mike is a Mechanical Engineer who specializes in Heating, Ventilation, and Air-conditioning. His love for humanity and his profession propels him to share useful and factual Information on this blog.

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Wateriit.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.

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