Whole House Water Filters

One of the big questions that bug most homeowners is whether their homes require whole house water filtration systems. There is a lot of confusion also over the best type of water filtration technology too. A water purification system is a big-ticket item. You do not want to spend big bucks on one unless it is necessary. You also do not want to spend your cash on a product that does not do its job or one that will quit on you when you need it the most.

What is a whole house water filtration system?

According to the EPA, your home utilizes about 300 gallons of water per day. A point of entry water filtration system can provide filtered water to your entire home. A large portion of whole house water filter systems can filter at least 600,000 to one million gallons of water over a five to ten year period.

The products have heavy-duty 10 inch or 20-inch size filtration cartridges, backed by two to three-stage filtration configurations. The system could also have a water outlet and inlet shut off valves and pressure relief housings to facilitate easy filter replacement.

The Winner, Second Best, Editor's Choice
Flow Rate: 15 GDM
Filtration Stages: 4
For 3-6 bathrooms
10 year limited warranty
Model: EQ-1000-AST-UV-AMZN
Flow Rate: 7 GDM
Filtration Stages: 5
For 4-6 bathrooms
10 year warranty
Model: PC1000
Flow Rate: 15 GDM
Filtration Stages: 4
For 4-6 bathrooms
Limited Lifetime Warranty

Best Whole House Filtration Systems - Full Comparison Table
15 GPM4
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7 GPM5
Aquasana EQ-1000-AST-UV-AMZN
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15 GPM4
Pelican PC1000
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24 GPM3
Bluonics BBUV110V
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15 GPM5
Filtersmart FS-F-15
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15 GPM3
Express Water System WH300SCKS
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10 GPM4
Home Master HMF2SmgCC
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12 GPM3
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7 GPM3
Aquasana EQ-600R
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12 GPM2
iSpring  WCB32O
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Home Master RO water filter system
Flow Rate
Filtered Water Quality
Ease of Maintenance

  • Highly Effective Purification
  • Filter lifespan: 2000 Gallons
  • Made in the USA with 5 Year warranty


The wide range of whole house water filter systems out there can be mind-boggling. Are you one of those people that just want a system that does a fantastic job, with minimal maintenance? The Green Carbon 15 from Apec is one. This carbon backwashing whole house water filtration system has an activated coconut carbon filter in it.

The beauty of a filter system with a backwash function is that they are easy to maintain. The backwash process works through a preset mechanism that forces the system to reverse its water flow, cleaning the filtration bed. The dirty water is pushed out through the drain line, and the system’s filtration process is rejuvenated. The Green Carbon 15, thus, does not need sediment pre-filter.

This Apec whole house water filtration model will effectively get rid of residual chemicals and odor in your water. This includes compounds such as chlorine, chloramine, and benzene. The robust carbon filter in it will also get rid of odors from low concentrations of hydrogen sulfide.

Its other fantastic selling point is its robust filters. They will last you five to six years of hard use, and they are very affordable to replace. The water filter system can effectively clean water for a 6-bathroom house at a speed of 15 gallons per minute. Have a shower hungry household? Buy the Green Carbon 15 and ensure that your home’s water supply is perfect for hair and skin health.

  • Super easy to maintain
  • Long-life carbon filters
  • Affordable carbon filter replacements
  • Does not have an inbuilt UV light filter
  • Does not get completely rid of hydrogen sulfide odors
  • Does not soften water
Flow Rate
Filtered Water Quality
Ease of Maintenance

  • Improved ALKALINITY removal
  • Trusted US brand with 20 years of history
  • High purity RO water and at 75GPD


There are different types of filters for different types of water pollutants. A one size fits all kind of water filtration system is rare. Nevertheless, is that not what we all want? Aquasana figured that out and made this whole house water filtration system. Get this model, and you will not need to add any other special technology filter or sterilizer on the side.

First, this model has a Carbon and KDF filter for chemicals and odors. That alone will give you clear and pleasant-tasting water, which gives your whole household gentle refreshing showers. However, that’s not all there is to it. The system also has a UV filtration system, to ensure that 99.99% of disease-causing microorganisms are treated. We are talking dangerous viruses, cysts like Giardia and Cryptosporidium and bacteria such as E.Coli. This means that you do not have to purchase an under faucet water filter to do the job.

But the good people at Aquasana are not done with you yet. They have also added their SimplySoft water conditioner, to descale your home’s water. Their salt-free system ensures that your water filtration system is friendly to the environment too. The other fantastic feature of this model is that it is also a low maintenance product. Its filter’s life, however, is much shorter than that of the Green Carbon 15. According to the system’s users, the pre-filters will last for two months, while the carbon and KDF filter lasts six months of hard use.

  • Has UV light treatment function
  • Has a salt free water conditioner
  • Easy installation procedure
  • Short life filters
  • Reduces water pressure
  • Fragile system
Flow Rate
Filtered Water Quality
Ease of Maintenance

  • Great PH Levels
  • 98% lead removal
  • Affordable Filters


Are you one of those people that love their morning cuppa coffee brewed to perfection? The absence of good water sources can dull the excitement of a great house in a great locality. If the first thing that greets you every morning is that awful hospital smell in your cup of water, you are going to be miserable. Your hair and skin will not like the chlorinated water too.

With the Pelican PC1000 in your home, you do not have to waste a moment worrying about the presence of chemicals in your water. This whole house water filtration system is a four-step activated carbon media filter system. It is designed to filter out chemicals such as chlorine and its unpleasant odor and effects on your cooking, clothes, hair, and skin.

The fantastic product has a sizeable 600,000-gallon capacity, filtering enough water for a considerable 6-bathroom house. However, if your water has a rust problem, Pelican advises you to purchase one of their manganese/iron filtration systems for rust elimination. The Pelican 1000 is a robust but straightforward carbon filter system, and it also relatively maintenance-free. You will only need to clean the system every five years.

Unlike the Green Carbon 15, the Pelican 1000 is not a backwashing system. Thus, you will need to change its sediment filter every 6 to 9 months. The filter’s Up-Flow System is a strong chemical filtering process and is worth the little maintenance the sediment filter requires.

  • Robust build and can be installed safely in the outdoors
  • Great customer service
  • Large capacity water filter
  • No UV filter
  • Does not have a descaler
  • The installation procedure is a bit complicated
Flow Rate
Filtered Water Quality
Ease of Maintenance

  • Large super capacity filters
  • Durable
  • Price wise


Is your home dependent on well water and you need 100% microbial free water? This Bluonics whole house water filtration system most significant advantage is its efficient UV light sterilizer feature. The 110W, 24 GPM light has been touted as the best UV light water treatment product there is out there.

Besides its powerful germ-killing function, this Bluonics water filter system also has a carbon block filter and a sediment filter as well. It is, therefore, perfect for municipal water or groundwater that is cloudy and could be polluted by non-point sources of water pollution.

This Bluonics water filtration system will get rid of not just chemicals like chlorine, but silt, rust, dirt, and sand as well. Your food and beverages will taste better without the horrid chlorinated water taste. You will, however, appreciate it more for ensuring that your household is entirely safe from E-Coli, viruses, cysts, fungi, bacteria, and algae.

The UV sterilizer’s chamber is of excellent quality, and it has a metallic mounting bracket. It also has two 55W bulbs that makeup 110 W of sterilizing power. You will need to change these bulbs annually, to keep the sterilization in top form. The filters, on the other hand, need to be replaced every six months or so.

  • Fantastic two UV light sterilizer feature
  • Great for well water
  • Sturdy construction
  • Not easy to install
  • UV light sterilizer could warm your water up
  • The provided fittings could leak
Flow Rate
Filtered Water Quality
Ease of Maintenance

  • Good customer service
  • Environmentally friendly coconut carbon filters
  • Quick and easy installation


Who does not love a lifetime guarantee on their purchases? This Filtersmart whole house water filtration system has a manufacturer guarantee on all its valve heads and tanks as well. It has a carbon-based filter, coupled with a salt-free water softener feature.

Its carbon filter can last for five years. However, you will need to replace its very affordable sediment pre-filters every six to eight months. While most whole house water filtration systems, have carbon-based filters to get rid of chemical pollutants, some of them do not do as good of a job as they should. Filtersmart, nonetheless, uses only the best carbon filters from Jacobi Carbons.

This means that your water will be clean of chlorine, benzene, and chloramines, the perfect water for an enjoyable and healthy shower. The addition of a salt-free water conditioning feature means that you can say goodbye to that awful slimy feeling that hard water leaves on the skin after a shower. Since the product does not have a drain, it is easier to install and maintain.

  • Water conditioning feature
  • Lifetime guarantee on parts
  • Great carbon filters
  • No UV light sterilizer
  • Does not clean out rust, manganese or hydrogen sulfide
  • Needs a sediment filter change every 6 to 8 months
Flow Rate
Filtered Water Quality
Ease of Maintenance

  • 1: 1 Drain Ratio mean less water waste
  • Fast flow 400 GPD
  • Attractive Tankless Desing


Do you have a large house with lots of faucets and you do not want to buy a faucet water filter for each one of them? This Express Water filter system for the whole house has an in-depth 3 stage filtration system that makes all the water flowing through it safe for drinking.

The first step of its process involves the removal of dirt, rust, and silt via its sediment filter. This filter is made from food-grade polypropylene material to ensure that it not only catches all sediment but last longer too. Unlike other brand’s sediment filters, the Express Water system’s filters can last for one year.

The system’s second stage of filtration has an activated carbon-based filter that eliminates all chemical pollutants from the water. You no longer have to worry about pesticides, odors, chlorine, and a bad metallic taste in your water. There also is a third stage Activated Carbon Block filter, which dramatically improves the taste and drinkability of water, freeing it from every chemical pollutant remnant.

If your home has municipal water that does not need UV light treatment, then the Express Water filter is perfect for you. Users have said that they also love that it does not affect their home’s faucet water pressure on installation.

  • Robust construction
  • Removes iron and produces great tasting water
  • Easy to install
  • No UV light sterilizer
  • It does not have a water softener feature
  • The system needs to be reinforced to prevent leakages
Flow Rate
Filtered Water Quality
Ease of Maintenance

  • Compact Design
  • WQA Gold Certified
  • Water Saving Smart Technology


Do not let its rather generic name fool you. This Home Master whole house water filtration system is a beast. It can filter at least 10 gallons each minute, making it perfect for larger households. The product has a dual filter system that begins with sediment filtration and ends with chemical pollutants removal.

It is excellent for use in homes that depend on city water. It gets rid of sedimentation, chloramines, and chlorine. The HMF2SMGCC has a robust 95,000-gallon capacity with a steel mounting bracket for easy installation. Its oversized filters significantly improve its flow rate.

The product has a closed system, meaning that it does not waste water. To prolong its sediment filters, avoid using it on garden and lawn water. The sediment filters, however, last a good six to 12 months depending on your water filtration needs. On purchase, you will get the filters, the system’s steel brackets and bolts for the mounting as well as a wrench.

  • Has all installation requirements provided
  • Great construction
  • Excellent water filtration capacity for larger households
  • Does not have a UV light sterilizer
  • Does not remove calcium or magnesium from water
  • Not easy for DIY installation
Flow Rate
Filtered Water Quality
Ease of Maintenance

  • True filter change indicator
  • Unique leak-free integrated water route
  • NSF/ANSI standards components


Did you know that bigger filter cartridges in a whole house water filter system imply a better water flow rate? The term Big Blue is a Kleenex term used in the water filtration industry to refer to water filter housings in the 10-inch or 20-inch size dimensions. This Apec 3 Stage water model has large 20-inch filter cartridges, perfect for large capacity water filtration needs.

The product first stage of filtration removes sediment such as rust, silt, dirt, and sand from your water. The second stage of the product’s filtration system has a robust iron filter, which eliminates orange, brown, and red iron stains from the water. It also gets rid of that horrid metallic taste from water rich in mineral contaminants. Its third stage of water filtration has a carbon filter that deals with chemical pollutants such as benzene, chloramine, and chlorine.

This Apec 3 stage system with big blue filtration cartridges will not only give you better tasting cooking water, but refreshing showers too. Your bathroom, clothes, appliances, and plumbing will be happier also for it. No more brown rust stains on your bathroom walls and floors. This Apec whole house water filter has a flow rate of 15 GPM. Their sediment filters are long-lasting and need to be changed only once a year.

Take note, however, that this system does not filter calcium or magnesium from hard water. It also does not have a UV light feature or water conditioner. If your home’s water requires these components, you will need to purchase them separately. Nevertheless, its robust iron removal function is in a class of its own. Its large carbon-based filters will filter up to 80,000 gallons of water before replacement. The system is sold pre-assembled, so all that you have to do is to mount it and enjoy years of peace of mind.

  • Proficient iron filters
  • Big blue 20-inch filter cartridges for enhanced water flow
  • Does not interfere with your homes water pressure
  • No UV light sterilization feature
  • Does not fully eliminate lead and fluoride
  • It does not condition water
Flow Rate
Filtered Water Quality
Ease of Maintenance

  • NSF Tested and Certified
  • Extra Long Filter Life
  • Money Saving Model


Another fantastic whole house water filtration system from Aquasana. It utilizes Aquasana’a unique Rhino up-flow technology that forces your home’s water through an upper basket, and down a tube in the tank. Once the water is at the bottom of the filter tank, it creates a swirling motion, which eliminates the need for backwashing systems.

Upflow water filter systems ensure that water has prolonged contact with the filter media for maximum filtration. This Aquasana model utilizes KDF and activated carbon filters for water purification. The large filters will filter 600,000 gallons before expiry, which is about six years of service.

The system also has a sediment filter that will need replacement every three months. Unlike our other Aquasana model on this list, this model does not have a UV light sterilizer or water softener attached. If you need these functions, you can purchase them all from Aquasana.

  • Clears out all chemicals pollutants from water
  • Long-life model
  • Affordable
  • Difficult to DIY install
  • Poor customer service
  • Requires constant pre-filter changes
Flow Rate
Filtered Water Quality
Ease of Maintenance

  • Reduces chlorine taste and odor
  • Filters up to 600 gallons
  • Removes entamoeba cryptosporidium and giardia


Do you know that reverse osmosis water filtration systems filter out every healthy mineral from your home’s water? These systems are not only water wasting and painfully slow, but they also change the PH of your water. This iSpring whole house water filter system, however, has a three-stage filtration process.

The water filtration system utilizes sediment pre-filter, and carbon block filtration made from the highest quality activated coconut shell carbon. These filters will eliminate chemical pollutants from water. This iSpring whole house water filter model, however, does not have a capacity as large as the other systems featured on this review.

It has a 30,000-gallon capacity, perfect for smaller homes. If your water is hard, you will also need to purchase a water softener. For homeowners that utilize well water, you will also need to buy a UV light sterilizer on the side.

  • Easy to install
  • Eliminates hydrogen sulfide odors from the water
  • Can filter lead
  • Smaller Gallon
  • No UV light sterilizer
  • Does not condition water

How To Choose A Great Water Filter For Whole House – Buying guide

Why a whole house water filtration system is necessary

Whole house water filtration systems have become a necessity today, due to the presence of detectable levels of water pollutants in some reservoirs, rivers, lakes, seas, and groundwater. But isn’t the North American continent said to have some of the world’s safest drinking water sources?  It is, but research done by the North Eastern University and Environmental Working Group, for instance, shows that over 43 states have unsafe water reservoirs. The most common pollutant in these sites is toxic fluorinated compounds known as PFAs.

However, PFAs are not the only pollutants homeowners have to worry about when taking that sip of cold, clear water. Water is a fantastic solvent, meaning that it dissolves a large variety of substances. This is an excellent feature because you get to enjoy that raspberry-flavored Kool-Aid dissolved in it. It is that same factor that makes water a good source of pollutants that can range from microorganisms to dangerous chemicals such as arsenic.

It is, however, good to remember that most of the water used in the home has already been treated and is free from pathogens. If you are worried about contaminants in your water, then you should have a water filtration system in place to deal with the drinking water. Besides their prowess at providing safe water to your entire family, whole house water filtration systems, have many other advantages as well.

Advantages of installing a whole house water filter system

  1. Safer and cleaner water for your home
    Municipal or city water is treated using chlorine or chloramines that introduce an unpleasant odor and taste to water. Groundwater sources produce water that has trace colors, smells, and tastes of naturally occurring minerals like iron, sulfur, or calcium. The EPA also does not regulate the treatment of water from private wells, so you have to put a measure in place to ensure that it doesn’t contain any microbes.  If your water, for instance, has that horrible hydrogen sulfide smell in it, it can be difficult not only to drink but also to shower in.
    Dirty looking brown water with Manganese or iron in it is not what you want your kids to gulp down. How about chlorinated water that not only tastes bad but also leaves your skin and hair dried up after a shower? Whole house water filters, unlike faucet or under the faucet water filters, drastically reduce the content of these contaminants from every drop of water in use in your home. With these water filters at your homes’ water point of entry, your family will enjoy better tasting and healthier drinking, cooking, and showering water.
  2. Long-lasting and better-looking clothes, appliances, plumbing and bathroom surfaces
    Chemicals and minerals such as chlorine, calcium, magnesium, and iron produce byproducts that degrade your household items. Magnesium and calcium, for instance, will create limescale that clogs electrical appliances and your plumbing as well. Rust from iron will stain your bathroom surfaces, turning them to a dirty brown color. Chlorine, on the other hand, will affect your laundry and electric appliances as well. Whole house water filters will make a massive difference in the lifespan of your household appliances if your water has heavy chemical or mineral contaminates.
  3. Efficiency in water filtration
    These systems have multi-stage filtration processes that not only eliminate a wide range of water pollutants but filter large volumes of water fast. If you have a large home, placing a filter at every water outlet can be expensive. Installing a whole house filtration system is more cost-efficient.
  4. Ease of installation and maintenance
    With a little DIY experience, you can install a whole house water filtration system, without a plumber’s assistance. Any adult can perform their maintenance processes too. Most systems require a three, six, nine, or twelve month’s sediment filter stage to keep them in optimal shape.
  5. Better for the environment
    A large amount of plastic water bottles accumulating in landfills and surface water sources has become alarming. Nevertheless, homes can turn this tide by using water filtered at home. Reusable water containers can then be utilized to carry water, which will lessen the times that you or your family members will purchase bottled water. This will not only save your family a lot of cash but will reduce your plastic waste too.

Disadvantages of whole house water filtration systems

  1. They do not come cheap
    Whole house filter systems have a high initial investment, and the more complicated their filtration technology is, the more they will cost you. Therefore, if your water needs complex filtration processes beyond regular activated carbon filtration, you will have to set aside a bigger budget for the system.
  2. Lack of a fine-tuning filtration process
    Point of entry water filtration systems are inflexible in their water filtration processes. This system, unlike that of a point of use filter, will not allow you to filter water where it is needed the most. Thus, you will have filtered water for use in the toilet, for instance, whereby depending on the contaminant in question, it could be considered unnecessary.
  3. You will need several hours of research before buying a whole house water system
    To purchase a water system that is perfect for your home, you must carry out thorough research. You have to establish the type of pollutants present in your water, to enable you to purchase a filtration system with adequate technology. You will also need to know about filter sizes, and which one is sufficient for your home. There is also maintenance, installation, and replacement costs to consider. There are other useful considerations such as the filter’s life span and the effect of the system on water pressure.

Types of whole house water filtration systems

There are different types of complete house water filtration system technologies because water quality and pollutants vary from one location to the other. There is no one single filter that can clean up every pollutant in water. A comprehensive water filtration solution has two or more of the technologies below. A whole house filter can, for instance, have a carbon filter as well as an ion exchange system. An even better system will have a UV light system installed to kill every microbial pollutant.

Carbon adsorption

Carbon-based water filtration systems are the most common and economical types of water filters there are out there. They are also relatively easy to maintain.  These water filtration system uses activated carbon materials to trap large organic molecules as well as microscopic particles. They will clean out contaminants such as chemicals, gases, chlorine, odors, and chloramines.

Most of these filters have a three-stage filtration system, which begins with the pre-filter stage. At this stage, sediments and large contaminants are removed from the water.  The second stage of filtration utilizes a copper-zinc matrix that eliminates chlorine and dissolved metals.  The activated carbon filter then does the last stage of filtration and gets rid of harmful organic compounds.

Sediment filtration

These filters are used to filter water from wells or turbid surface water. Such water is usually unclean and cloudy. This filtration system uses Zeolite to treat the turbidity, through mechanical straining, ion exchange, sedimentation, and electrostatic absorption. These filters will improve the look and taste of the home’s water. They also work well in conjunction with UV or carbon filtration systems.

Ion exchange

These filters use ion-exchange beads treated with special resins to soften water. They are great systems for use in areas that have hard water due to high levels of magnesium and calcium. They produce water that is not only great to drink, but also one that will protect your skin, hair, plumbing, and appliances from limescale accumulation.

Catalytic conversion filters

These whole house water filtration systems can treat hard water without the use of salt. Usually, most water softeners require regular addition of salt for ion exchange water treatment. The catalytic conversion uses ceramic granules to convert magnesium and calcium into crystals that will not form limescale. These filter systems are more friendly to the environment than their ion-exchange counterparts and are also easier to maintain.

Oxidation-reduction systems

Also known as redox, these filtration systems work on the principle of electrons transfer, and electrochemical oxidation. They use manganese dioxide as an oxidizer, to precipitate hydrogen sulfide, iron, and manganese from your household water. They are ideal for use in areas where there is a lot of rust, iron-red stains, and a rotten egg smell in the water.

Reverse osmosis filters

This water filtration technology gets rids of pollutants better than carbon-based systems. They are very common in under counter faucet water filters. They deliver safe and ultra-pure drinking water. They, however, can be purchased for whole house water filter systems but at a premium.  For such large-scale use that can also be quite expensive to maintain, slow, and wasteful.

Factors to consider when buying a whole house water filter

Flow rate
The flow of a water filtration device is measured in gallons per minute (GPM). The rate of water flow is the total amount of water that can run through all water dispensing stations in your home. Before the purchase of a whole house filter system, you need to be aware of the flow rate of your home. If you need any assistance, ask for the help of a professional. If you purchase a filter system with a lower flow rate than your house requires, you will have to endure interrupted and low water pressure problems in your home during peak use.

Family size
A large family will require bigger sizes of filters and vice versa. If you have a big family, go for a filtration system with large capacity filter cartridges. You will enjoy better water supply and more extended periods between maintenance as well. A small apartment owner, however, does need not to pay that extra buck for a big blue filtration system. A 10-inch filter cartridge system should provide enough water for smaller homes.

To establish the budget for the purchase of your whole house filter system, you need to first, know what type of water pollutants are present in your water. Your budget will also be influenced by the flow rate required in your home. Research on these factors first and then draw up your budget. Plan to stick to it, and avoid unnecessary add-ons that could, in the end, increase maintenance, replacement, and installation costs.
The costs of purchase and installation of a whole house water filtration system will depend on the type of filter technology required. Most whole house water filter systems costs lay between the $320 for simple activated carbon filtration and $3000 for multiple technology filtration systems.  If your home is already plumbed, your installation procedure should not cost you a dime. Nevertheless, if you are not a DIY type of person, you will need to part with a few bucks to cover plumbing costs.

The lifespan of filters & maintenance costs
High-quality filter cartridges can last for three years, while the cheaper type will last for a minimum of 3 months. However, replacing a filter is easy and is done to ensure that the filtration system’s performance is top-notch. Most replacement filter cartridges are quite affordable and lie in the $30 to $150 range. If you want peace of mind, choose a water filtration system whose replacement schedules are not demanding.

NSF Certified products

NSF certified water filters are not only approved by the public health certification and standards body but are also tested. A manufacturer of a high-quality whole house water filter will declare the contaminates a particular system reduces and NSF will conduct tests to establish their claim. Therefore, ensure you purchase filtration systems with an NSF certification.

DIY or Professional Installation?
You do not have to call in the technician to install your new whole house filtration system. The installation can be done in an hour or two depending on your DIY skills. That said, it is a relatively tricky project to work on for a person with minimal DIY experience. If you are not accustomed to tools, you are better off calling in help from a professional. Professional installation can be particularly helpful in preventing the voiding of warranties if any.

Purpose of filtration
There is a wide range of water filtration technology out there each designed to optimally, filter a particular class of contaminates. What contaminates do you want your whole house water filtration system to filter? Here is quick look at the impurities each filter type will remove in your water.

Activated carbon filters

These can eliminate over 80 chemicals from water including;

  • All 32 listed by chlorine by-products
  • 14 listed pesticide types including nitrates and glyphosate
  • 12 types of common herbicides
  • The toxic firefighting foam and repellent PFOS including PFNA, PFOA, and PFAS
  • Phosphates from fertilizers
  • Lithium
  • Pharmaceuticals
  • Microplastics

Special activated carbon filters

They will filter out;

  • 95% of Zinc, lead, and copper in water
  • Microplastics
  • 70% mercury, nitrates, asbestos, arsenic, and fluoride
  • Cysts such as cryptosporidium and giardia

Ion exchange and salt-free Catalytic conversion filters

  • Soften water by reducing magnesium, calcium carbonate, and limescale.

Oxidation-reduction systems

  • Eliminates Manganese, hydrogen sulfide and iron for clear, rust-free water

Reverse osmosis filtration

  • Uses pressure to filter all contaminants with particles larger than that of a water molecule.

How do whole house filters work?

As mentioned, there is a wide range of water filtration technology out there each designed to optimally, filter different contaminates. However, the most common whole house water filter is the activated carbon filter.

Carbon is simply charcoal. Activated carbon has been through an activation process that gives it a large surface area. A gram of this processed charcoal has a 3,000 square meter surface area. To put things into perspective, a teaspoon of activated carbon has close to the surface area of a football pitch.

This aspect of space makes activated carbon very useful for a wide range of industrial and domestic applications.

As polluted water encounters the activated carbon, intermolecular forces push water through the activated carbon, leaving contaminants behind much as a screen door would. Activated carbon filters also facilitate a chemical reaction that eliminates molecules of chlorine. When the water treatment chemical is exposed to activated carbon, their molecules react and form chloride ions.

Submicron activated carbon filters will filter out cysts, lead, coliform, iron or arsenic. Filters with larger holes only trap organic chemicals with heavy molecules. Your water filter’s manufacturer will, therefore, label your activated carbon filter by its adsorption potential. Keep in mind that activated carbon filters, do not filter magnesium or calcium. You will need a whole house filter with an ion-exchange or catalytic conversion filters.

However, there is an advantage to purchasing an activated carbon filter infused with elements such as silver or Kinetic Degradation Fluxion. Silver, for instance, will kill bacteria, while KDF made from ground zinc and copper will reduce iron and rust contaminates in your water. Thus, if your activated carbon water filter is sub-micron-sized and has silver and KDF filters, it can eliminate a wide range of pollutants in untreated water. To make water completely safe from disease-causing microorganisms such as E-coli, a UV light sterilizer is affixed to the whole house water filtration system.

Questions to ask before buying a whole house water filter

How long does a whole house water filter last?
Sediment filters will last a minimum of three months and a maximum of a year. Nevertheless, the activated carbon filter can last up to five years depending on the brand that you purchase.

How can I tell when my filter is due for a change?
First, most manufacturers have instructions on the best time to replace a filter. Nonetheless, the presence of dirt, scale, or an unpleasant odor or taste in water is a sure sign that your filter’s change is long overdue. Ensure that you only buy system compatible filters to prevent an expensive and dangerous malfunction.

Where should I install a whole house water filter?
Unlike an under the sink water filter, the whole house water filtration system will treat your water at its point of entry. This means that all the water used in the home, including bath or shower, cooking, drinking, laundry, and water used to flush the toilets will first go through your filtration system. If your water comes from a well, you need to install the filtration system next to the pressure tank.

How to install a whole house water filter

  1. Shut off your mains water supply via the gate valve that supplies water to your house. Most homes have two chief water inlets, one for household use, and the other for gardening purposes. You need to install your filtration system on the household mains.
  2. Use the installation procedure outlined in your filter system’s instruction booklet. You will need to cut into your pipe to make some room for your system. Use the thread seal tape to cover your connection after the installation. Ensure that the seal is reliable and watertight.
  3. Restore your water system and enjoy clean, safe water in every water point in your home. Run the water for a few minutes to clear out any unfiltered water from your plumbing network. You should also prepare yourself for a change in water pressure depending on your filtration system of choice.

How to change the whole house water filter

  1. Simply consult your manufacture’s guidebook to get started.
  2. Turn off the water from the main valve
  3. Allow the system a couple of minutes to drain
  4. Unscrew the housing holding the filter using a wrench
  5. Clean up the housing to ensure that it stays in good order. Use warm soapy water, and a half a cup of bleach to clean and disinfect it.
  6. Lubricate the O-Ring if it has one with silicone grease
  7. Place the new filter inside it with a gentle push or twist
  8. Screw the housing back up
  9. Turn your water mains back on

Are these filters safe?

They are safe, but to ensure that they are designed for drinking water purposes, a material safety third part body such as NSF should rate them. They are usually rated on their ability to eliminate chlorine, taste, and odor, as well as contaminants such as cysts or lead.


The filtration efficiency of a whole house water filtration system will save you the costs of installing an on faucet filter for each faucet in your home. You can also enjoy better showers, cooking, and laundry. Your appliances, plumbing, utensils, walls, and floors will also thank you for the filtered water. We highly recommend the APEC Water Systems GREEN-CARBON-15  for its minimum maintenance requirements and its robust 15 gallons per minute filtration prowess. The Bluonics 110W UV Ultraviolet + Sediment & Carbon Well Water Filter Purifier System has a powerful UV light sterilization component. This 110W 24 GPM function is the best there is in the market and will give any groundwater household users complete peace of mind.