Best Whole House Water Filter 2021 – Buying Guide

Water is the most basic need of all life forms. For humans, however, it plays millions of roles other than for consumption. From cooking to washing clothes and even powering some devices, water is part of our lives in more ways than we can think of. Unfortunately, studies have shown that our water supply is no longer as pure as it was a hundred years ago. This is the reason why finding the best whole house water filter is important.

Whole house water filters can remove almost all contaminants in your water. By using a water filter, not only will your water be safe to drink, but it would also reduce the risk of water contaminant damaging your household equipment. However, the model of your whole house water filter will affect how well it will work for you.

There are lots of factors involved when selecting the whole house water filter, which is why we have created this in-depth guide to make this process easy for you. We have even included buying guide so you can make a wise decision. I hope you find this helpful.


What Is a Whole House Water Filter

Drinking water is an essential element for our survival. Studies have shown that, for a person to function properly, he or she needs to consume at least eight glasses of water a day. Even more amazing is that a full grown man can die by not drinking water for just three days.

However, not all water is the same. Some may be contaminated by dangerous chemicals or bacteria that may do more harm than good. This problem is most especially true when your drinking water from the tap. This is where home water filters come in.

A home water filter is a special device capable of filtering large amounts of water for consumption and usage. They are considered a Point-Of-Entry system because of how they are placed in a home’s water system. Home water filters are installed n the portion of the system before other devices like heaters and washing machines.

6 Best Whole House Water Filters 2021

Searching for the perfect whole house water filter is not as easy at it sounds. It is crucial for you to consider a wide range of factors that may determine which model is best for you. Th type of water you have, the size of your home, and even the number of users will affect which model you should buy. Disregarding these factors may be harmful to you both in the long and in the short run. Luckily, I have compiled for you the six best whole house water filters below.

iSpring WGB32B 3-Stage Whole House Water Filtration System

Coming in first in this long list of great whole house water filter is my personal favorite, the iSpring WGB32B 3-Stage Whole House Water Filtration System. The iSpring has some great features that make water filtration incredible efficient and effective.

The iSpring whole water filter includes a three-stage water filtration system for maximum contaminant removal. The first stage is equipped with high capacity polypropylene sediment filter that can remove dirt as small as 5 microns. The second and third stage filters, on the other hand, are made of high-quality coconut shell-based carbon block filters. This feature helps increase both the efficiency and the useful life of the water filter.

These filters have a maximum capacity of as much as 100,000 gallons for each filter. Its capacity means that a family of four can use the iSpring whole house water filter for an entire year without having to replace its components. The filter also comes with a metal bracket to make installation easy and fast.

Another great feature of this filter is its ability to maintain your water supply’s Total Dissolved Solids (TDS). TDS is the number of dissolved minerals present in your water. By maintaining your total dissolved solids, the iSpring whole house water filter provides you with water that is filled with healthy minerals.

Things We Liked

  • Comes with a wall bracket
  • Uses a three-stage filtration system
  • Can maintain water pressure thanks to its large filter cartridges
  • Water maintains normal TDS ratio

Things We Didn't Like

  • Some users claim that a leak can occur if Teflon is not applied to the piping installation
  • Can be complicated to install for people who have no prior knowledge in plumbing

Home Master HMF2SDGC Whole House 2-Stage Water Filter

Winning second place is the Home Master HMF2SDGC Whole House 2-Stage Water Filter. Although this water filter has some impressive features similar to the iSpring whole house water filter, it lost in some areas such as fewer filter cartridges, and lack of TDS retention system. Nevertheless, it still stands above most whole house water filters I have seen.

The Home Master whole house water filter has a dual cylinder filtering system. Each of these cartridges is equipped with high-grade sediments filters to remove greater amounts of dirt. It also helps extend the useful life of the water filter because of its ability to hold more contaminants before becoming full. The filters can remove dirt that is as small as 1-micron across.

This whole house water filter can also support a family of four for up to a year thanks to its 100,000-gallon capacity. Its coconut shell carbon filters also remove other chemicals and impurities. Studies of the device have shown that it can remove at least 95 percent of the sediments, chemicals, chlorine, and other contaminants; thereby, reducing foul taste and odor from your water.

Lastly, the Home Master water filter’s large capacity filters also help control the flow rate of your water supply. So, you can bet that your water will reach every part of your home just like before you installed the filter.

Things We Liked

  • The dual filters remove more contaminants than regular single cartridge filters
  • Wall mount makes installation easy and safe
  • Comes with an easy to understand instruction manual for installation and operation

Things We Didn't Like

  • Filter cylinders are less durable than metallic whole house filters
  • Inlet and outlet ports are made of plastic

DuPont WFPF13003B Universal Whole House Water Filtration System

Your budget is an essential criterion when choosing your whole house water filter. If you have a very tight budget, or unable to invest in a water filter worth hundreds of dollars; then, I would recommend the DuPont WFPF13003B Universal Whole House Water Filtration System for you. Although it’s way cheaper than most water filters, it can still provide reasonable features for those who buy it.

The DuPont Water Filtration System incorporates a single poly block cartridge to remove dirt and contaminants in water. For a very affordable filter, it can impressively filter particles as small as 10 microns across. This means that it can help improve the taste, color, and odor of water coming from common water supplies.

Furthermore, its cartridge can clean as much as 15,000 gallons of water before needing replacement which can last for almost a year with a single person use. Another great thing about this filter is the three-year warranty that comes with it. This lengthy warranty period gives users a chance to test the functionalities of the filter thoroughly.

Things We Liked

  • Very affordable for a very functional whole house water filter
  • Comes with an excellent warranty package
  • Has good customer service representatives

Things We Didn't Like

  • May significantly reduce the strength of water flow
  • Not suitable for a huge family

Aquasana 10-Year, 1,000,000 Gallon Whole House Water Filter

If you have some money to spare and are willing to invest for a high-grade whole house water filter, then the Aquasana 10-Year, 1,000,000 Gallon Whole House Water Filter is best whole house water filter for you. This industrial grade water filter can work not just for homes but also for large establishments like buildings or restaurants. However, if you’re living alone, or with only two or three people, then this might be overkill.

The Aquasana whole house water professional kit includes 20" pre-filter, post-filter, a filtration tank, bend supports, brass fittings, and shut-off valves. Although it is expensive, the accessories included already compensate for the money that you will be investing. Not only have that, but the Aquasana whole house water filter has been shown to remove 96% of the chlorine in your water. Lesser chlorine in water means less damaged skin and hair, cleaner cooking, and safer water.

The filters large capacity also allows it to function correctly for up to 10 years a considerable feat only a few water filters can achieve. The Aquasana’s unique upflow, dual tank design also increases the contact of water to the contamination filters of the device removing more dirt and bacteria than conventional filter designs. This also helps eliminate harmful chemicals like mercury, lead and other heavy metals from your water.

Things We Liked

  • The filter uses high-quality and durable filters and fittings
  • Reduces sedimentation and scaling in equipment where water passes through
  • Has a large capacity and very long useful life of ten years

Things We Didn't Like

  • Owners need professional tools to install
  • Can be very expensive for a regular family home

5. Home Master Whole House 3-Stage Water Filter - Best For Maintaining Water Pressure

Home Master Whole House 3-Stage Water Filter

Have you ever experienced taking a bath only for your shower to lose water because someone turned on a faucet somewhere around the house? You can most likely blame this on weak water pressure in your water lines. Some whole house water filters have trouble maintaining the water pressure they receive in the main water supply because of their small capacity. Fortunately, the Home Master Whole House 3-Stage Water Filter can help you solve this problem.

This whole house water filter can maintain a fantastic water pressure of 15 gallons per minute thanks to its large filter cylinder and large 1-inch ports. Because of these features, it can also filter large amounts of water continuously. The filters reduce the need for maintenance because of their ability to contain large amounts of dirt and sediments.

The Home Master Water Filter has three cylinders that help it purify water as much as possible. These three cylinders can also remove up to 95 percent of contaminants such as iron, manganese, sediments, and chemicals. Particles larger than 1 micron have no chance to pass through the Home Master Whole House Filter’s super fine coconut shell carbon filter.

Things We Liked

  • Has a three large water filter cylinders
  • Maintains your water supply’s pressure
  • Can last for up to a year without replacement thanks to its 100,000-gallon capacity
  • Comes with a free wall mount for easy installation

Things We Didn't Like

  • Can be expensive for some people
  • Some users notice leaks after a few months of use

3M Aqua-Pure Whole House Water Filtration System

Replacing whole house water filters can be just as installing them. By doing it yourself, you can damage the equipment and cause leakages. Hence, it is always recommended that you ask an expert to do the installation for you. However, not everyone can easily call a plumber to replace a water filter. Luckily, the 3M Aqua-Pure Whole House Water Filtration System makes filter replacement easy and safe.

This 3M water filter has a uniquely designed easy remove filter cartridge. If you think your water is no longer being filtered well enough, all you need to do is twist the cartridge using your hands, remove it and replace it with a new one. No tools or contact with the filter material is needed to do the replacement.

The system uses an FDA compliant carbon-based filter that can remove contaminants like chemicals and corrosives from your water. The filter’s design allows large amounts of water to pass through; thus, maintaining your water pressure. This whole house filter also has a large capacity for a single cylinder filter. It can filter up to 100,000 gallons of water before any reduction in its effectiveness can be noticed.

Things We Liked

  • Has a very high water flow 20 gallons or 75.7 liters per minute
  • The water filter has a non-corrosive stainless steel body
  • Reduces chlorine taste and odor with its carbon filter media

Things We Didn't Like

  • May need a prefilter attachment for best results
  • No wall mount is included
  • Can be bulky for small houses

How to Choose The Best Whole House Water Filter

Whole house water filters come in all shapes and sizes. Various factors will affect how well a whole house water filter will work for you. Even if a particular model works perfectly for others, it doesn’t mean that it will do the same for you. Here are the most important things you have to consider in finding the best whole house water filter for you.

Strength of Water Flow of Your House

Strength of Water Flow of Your House

The power of your home’s water flow will affect by the amount of water your whole house water filter per period. Most filters have a specific maximum water flow capacity that must be maintained. Otherwise, the system may fail to function correctly.

Your water flow can be affected by various factors such as your locality’s water supply and your location. Based on these, you should choose the whole house water filter that fits your system best. You can estimate the strength of your water flow; however, it would be better to ask an expert to do this for you.

Type of Filter You Need

Type of Filter

Dirtier water requires finer filters than clean water. Most whole house water filters specify how fine or how coarse the filter is. Some filters are also designed to remove specific types of elements. For example, copper –zinc mineral filters are capable of removing heavy metal from your water something regular filters aren’t capable of.

UV filters, on the other hand, can kill most bacteria from your water. Choosing the wrong filter may result in under-filtered water which can be dangerous for your health or equipment. Selecting high-tech filters when you don’t need them, however, would only be a waste of money.

Useful Life of The Filter

Useful Life of The Filter

Depending on the model of whole house water filter you will buy, the longevity or useful life of your filter may vary. High-grade water filters can function adequately for even after a million gallons of water, while cheaper filters can sometimes fail even at the first 10,000 gallons. People who usually use significant amounts of water should buy filters with higher capacities.

Micron Rating of Your Filter

Micron Rating of Your Filter

The diameters of a filter’s holes are measured in microns. 1 micron is equal to only a hundred-thousandth of a centimeter. The fewer microns a filter has, the more contaminants it can remove. Regular whole house water filters often have a 1-micron rating, while more expensive filters can go as low as 0.35 microns. Choosing a 0.35-micron filter can be too much for a regular household.

How Do I Install a Whole House Water Filter?

Install a Whole House Water Filter

Installing a whole house water filter is recommended to be done by a professional. This is because a faulty installation can result in various problems such as leakages or pipe blockage. However, if you do not have the budget to hire an expert, you may install a whole house filter by following these steps. Make sure to take extra caution and diligence to avoid any future problems.

Step 1. Turn off your main water supply, and drain any water left in your pipes.

Step 2. Using the correct tools (pipe cutter), cut the portion of your pipeline where you wish to install the whole house water filter.

Step3. Install the intake of the filter to the source of your water and the outtake to the direction of your home. You can read more about this on your filter’s instruction manual.

Step 4. Depending on your filter, mount the filter to a sturdy wall or floor. Most filters come with a wall mount that you can attach to your wall.

Step 5. Turn on your water supply and check for any leaks. If any leakage is visible, repeat the above instructions, or consult an expert plumber.

If you wish to change your filter, you can quickly do it by unscrewing the filter housing using a wrench. Remove the filter inside and replace it with a new filter. Let your water flow for at least ten minutes before using the water for consumption.

You can know if you need to change the filter of your whole house filter by checking the taste, color, and aroma of your water. If you notice sediments coming from your faucet, then it’s probably time to change. You can read this article to learn how to install a whole house water filter correctly. You can also watch this video to learn more:


Finding the best whole house water filter is not as easy as walking into a shop and pointing at one. Various factors will determine if the filter you’ll buy will work for you perfectly or will result in a waste of money. These factors may include the type of water you have, your location, the strength of your water source, the filter you need, the presence of contaminants and more.

If there is one whole house water filter that aces these criteria, it would be the iSpring WGB32B 3-Stage Whole House Water Filtration System. The iSpring water filter has one of the smallest micron rating giving it the ability to clean water as much as possible. Unlike the Home Master water filter that has two filters, the iSpring filter houses a three-stage filter system to make sure that no contaminants escape from it.

This filter can also maintain the Total Dissolved Solids of your water a feature that most filters cannot achieve. Although it is not as cheap as the DuPont Water Filtration System, its features still make its price tag worth it. Last, but definitely not the least, it the free metal wall bracket that comes with the filter.

Every home has varying needs and requirements; hence, what may work for one may not work for another. But, if you're looking for a filter that you can surely depend on, I highly recommend the iSpring water filter for you.

I am Vera Watson. Drawing The House is a dream that was conceived when I saw a niche in consumer guide on almost everything in our homes. My main aim is to help you save money by testing the products you need and recommending you the best of them all. I believe in the family as an institution and the first way to make a family happy is providing the best for them.

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