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Install Whole House Filter Before or After Water Softener?

Published by: Paulo Baker

Should I Install Whole House Filter Before or After Water Softener

Every homeowner chooses whether or not to set up a whole house water filter before or after the water softener. Homeowner’s decision is vital to have access to safe and clean water for the application of the entire household. 

Due to this, it has made the setting up of this whole house filter a vital part of residential and commercial properties. 

So in this post, we’ll see whether you should install whole house filter before or after water softener…

What is a Whole House Water Filter? 

A whole house water filter is used to eliminate water impurities. This filter helps provide pure water and at the same time avoid waterborne illnesses. This can also stop water hardness to some level.

These are accessible in different types like countertop water filters, under-sink filters, and a whole house water filter. 

You can choose which of these will suits you the best according to your needs and the level of impurities in the water system. 

This type of water filter works in two varieties, chemical filtration and physical filtration—the latter assists in targeting the bigger sediments, while chemical filtration focuses on smaller impurities. A lot of water filters mix both these approaches and provide pure water. 

What is a Water Softener? 

A water softener is made for lessening the level of hard minerals in the water supply.

Water supply is forced in a water system armed with beads packed with positively charged sodium ions. This system is made to eliminate scale and protect users from the negative results of hard water.

Water softener working

A water softener helps in turning hard water into soft water. This procedure can be better cut down if you think of a chemical magnet.

Should I Install Whole House Filter Before or After Water Softener? 

The whole house water filter is installed after the water softener, which will avoid softening resin from fleeing from the softener. If the mud or turbidity of the water is higher to plug the water softener, you must have a water filter before the water softener. 

Furthermore, does a whole house water filer go before or after water softener? If it is well water, you must first have a water filter before the water softener. First, soften, then undersink or another filter. 

Can I place a filter before the pressure tank? Well, expert says that there’s no reason to filter before pressure tank as you can drain pressure tank with an outlet at the base of the tank, which sort of make sense, however, if you own a level or flat tank in a narrow area and the output is centered on the end, essentially making it impossible to wash down junks, which gets into the pressure. 

So, do I need a whole house water filter that has a water softener? Many homeowners are under the misapprehension that their water is clean and safe just because they’re utilizing a softener to filter the water. 

Installing a softener rather than a superior water supply doesn’t provide the best and cleanest water that you like for cooking, drinking, and taking showers. 

If the pH level of the water is more than 7, then the iron filter is needed, not a water softener. Iron filters normally utilize Filox and Birm. This doesn’t treat hardness, so you might need a filter and a softener if you have hard water with iron in it. 

Water Filtration vs. Softening 

Water Filtration Softening 
Gets rid of impurities Pipes might last long with no scale buildup
Reduces harmful components such as fluoride and arsenic Decreased soap curd makes cleaning quicker and easier
Eliminates bad odorUse less shampoo and soap that saves money
Avoids diseases due to contaminated waterNo need to remember to eliminate scale from a washing machine, dishwasher 
Ideal for the environment by decreasing bottled water useWhites stay whiter with no gray due to hard water

Water Filtration

This refers to the process of reducing or removing impurities or contaminants from the water source. This takes account of particles like salt, iron, and more. 

Usually, this is for drinking water. These impurities include fungi, bacteria, parasites, viruses, and chemical and biological objects like iron, pesticides, fluoride, and sulfur. 

There is more than one technique of filtering with regards to water: 

  • Physical barrier
  • Chemical process
  • Biological process

A lot of filtering methods utilize a mixture of these techniques in their different filtration phases. 

After filtration, the end product will not have identical amounts of purity depending on the superiority. Remember that no clean water filtration composition can eliminate 100 percent of contaminants. 

Water Softening

This refers to the process of eliminating magnesium and calcium that is common in hard water. This doesn’t decrease any contaminants like iron. Instead just deals with hard water. 

The main issue with hard water is that it leads to the buildup of scale in appliances and plumbing, reducing the lifespan. 

Perhaps you’ve witnessed the buildup of scale in your water heater. These scales are the outcome of the hardness of mineral deposits and calcium. They’ve dried up as well as stuck to appliances, water lines, and fixtures. 

Hard water indeed is not a medical problem. On the other hand, it’s irritating and bothersome for a lot of households. 

Do you need a Water Softener If You Have a Whole House Filter?

It doesn’t matter if you want both a water softener and a whole house water filter system on the type of water, which goes into your house. 

On the other hand, you must get a water report from the local provider to determine the superiority of the specific supply of water. 

If you use rainwater or a private well, you can get your water tested by a specialized laboratory for hardness. This assists you choose precisely what type of filter to think of setting up a whole house water filtration unit. 

Do you need a carbon filter with your water softener?

Is a carbon filter required in a water softener? This is a common question asked by many homeowners. Carbon filters get rid of tastes, chlorine, odors as well as sediments. 

These filters set up in front of your water softener or no-salt water conditioner make a good combination. 

This carbon filter is set up before the water softener. This lengthens the lifespan of the water softener by eliminating chlorine before the softener and makes for ideal clean water all through your home. 

Final Thoughts

In general, there is no definite answer to the query about you should install a whole house water filter before or after a water softener. 

The peculiarities of every water source and properties in different homes will figure out the position of the crucial parts of the filtration system. 


Should the whole house water filter go before or after the water softener?

A whole house water filter must be set up before the water softener to make sure the elimination of the chlorine at hand in the water before passing in the softener for softening. This protects the layer of the resin of the softener.

Do water softeners need a pre-filter?

A water softener does an excellent job of cleaning and purifying the water. However, it can’t filter out all kinds of water contaminants. It can just eliminate minerals, which make the water hard. In this case, a pre-filter is needed.

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Article by:

Paulo Baker

Paulo is a senior writer at Dash Appliances, where he research, writes, and reviews home and commercial water filters. Paulo is covering home-related things like water filters, vacuum cleaners, and more since 2019. When he's not researching and testing, he's traveling and playing golf.

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