7 Best Whole House Water Filters For Hard Water (Updated!)

Hard water is full of calcium and magnesium. It is formed when water percolates through gypsum, limestone, or chalk deposits.

Many people are unaware that the tap water they use must contain harmful minerals and substances that make the water hard. Also, hard water is a significant cause of numerous diseases.

Therefore, drinking quality water is necessary for maintaining a healthy lifestyle. To achieve this, a whole house water filter is essential. 

Yet finding a water filter that can effectively remove hardness is not easy but don’t worry, after the deep research, we have enlisted the best whole house water filter for hard water.

Let’s check some best whole house water filters

Our Recommendations

Top 7 Best Whole House Water Filters For Hard Water

Following are the top best whole house water filters for hard water:

  • Aquasure Harmony Water Filter System
  • Whirlpool WHESFC Pro Series
  • iSpring WGB21B 2-Stage Filtration System
  • Aquasana EQ-1000 Filter System
  • Culligan WH-HD200-C Filtration System
  • Express Water Heavy Metal Filter System
  • General Electric GXWH04F Filter System

Aquasure Harmony Water Filter System

Whole House Water Filter For Hard Water

The aqua sure Harmony water filter is very effective in removing the hardness of water by removing the scale and spot buildup.

In this filter system, the advanced filtration technology uses an ion exchange process that captures magnesium and iron and then flushes them away.

Is It Effective In Removing Hardness Of Water?

This salt-based water softener is equipped with two tanks. A cation resin media is used in the softening tank to eliminate water hardness quite efficiently.

It can remove up to 110 grains of hardness minerals (magnesium and calcium) per gallon of water. 

The AS-HS32D removes a high quantity of minerals, so it’s an excellent choice for treating moderate to challenging water.

It’s Water Softening Resin reduces skin irritation and water spot buildup by eliminating scale, iron, magnesium, and calcium from the water.

Iron is also removed reasonably well by the unit. Iron can be removed up to 2 ppm with this softener, which is quite respectable compared to other softeners.

Aquasure Harmony Series softeners can treat hard water to a maximum of 32,000 grains on the lower end. 

Furthermore, the unit’s flow rate of 15 GPM makes it highly efficient for servicing a whole house without causing a pressure drop.

Water softeners manufactured by Aquasure have high strength corrosion resistant fibreglass lined polyethene tanks, durable bypass valves, and pre-filled resin tanks.

Key Features

  • 48,000-grain capacity
  • On-Demand Meter Control Head
  • High strength corrosion resistant fibreglass
  • Features an easy-to-read backlit digital interface
  • A high-capacity salt tank requires fewer refills
  • High-capacity salt tank requires fewer refills
  • Metered regeneration option
  • Easy-to-read backlit digital interface
  • Bypass valve
  • Large salt tank is heavy to move when full

Best Water Filter Pitchers For Hard Water

Whirlpool WHESFC Pro Series

This single-tank system contains both ion exchange resin for the ultimate in softening plus activated carbon to trap chlorine taste and odours.

A 2-in-1 system that includes a water softener and a filter will save you a good amount of money as you don’t have to purchase two separate systems that can be costly.

How Does It Remove Hardness From Water?

The filter stops unhealthful and visible containment of the water and best ensures the water is free from chlorine taste, unacceptably odorous water, and sediments to be consumed throughout the house.

In addition to eliminating stains on fixtures, the softener also protects appliances from corrosion and limescale by removing 120 grains of hardness plus three ppm of iron.

The water hardness is removed at an average rate of 120 grains per gallon, and the iron is released at an average rate of 3ppm, making it a valuable tool.

One of the most amazing things about this water filter system is that it will clean its filter as needed, so you won’t need to replace it.

With this model, you can save up to 25% on salt and water by monitoring your water consumption and only regenerating when needed.

With this whole-home filtration system, you can reduce sediment, taste, and odour from the water used in all areas of your home.

Save your family from the itchy and dry effects of hard water with this cost-effective and efficient system.

Key Features

  • NSF certified
  • It takes up to remove over 120 grains out of every gallon
  • Super convenient to clean
  • Regenerates lesser salt and on-demand
  • US-made 2-in-1 system.
  • Two-in-one filter and softener
  • NSF certified
  • Space efficient
  • Low-maintenance
  • Full ten-year warranty requires regular use of Whirlpool’s softener cleaner

Best Whole House Water Filters For City Water

iSpring WGB21B 2-Stage Filtration System

This iSpring filtration system is the best whole house water filter that can dramatically remove the hardness of the water. Its advanced technology provides high-quality water for households.

This filter is also the best alternative to large filtration systems because of its limited space. With its multi-layer filtration, it allows for fewer clogs and less minimal pressure loss.

How Is It Best For Hard Water?

Due to its advanced filtration technology, this filter system removes 99% of contaminants like chlorine, chemicals, chloramines and other substances, the leading cause of hard water.

This filter uses Two-Stage Filtration.

  • A 5-micron polypropylene sediment filter (FP15B) is used in the 1st-Stage to capture dirt, sand, silt, dust, rust, and scale particles and extend the life of the CTO carbon block filter.
  • In the second stage, the CTO filter (FC15B) removes the cloudiness and bad tastes and odours, more than 90% of chlorine, and industrial solvents and pesticides, which are high-risk VOCs.

This filter system will provide 50,000 gallons (Half a year) of clean and safe water to your family with a high filtration capacity. Also, its highly compact coconut shell activated carbon filter can be replaceable.

ISpring has a carbon block filter made with coconut shell carbon and highly compact fabrication technology for the hard water. The filter is highly efficient and lasts for an exceptionally long time.

Key Features

  • Advanced two-stage filtration technology
  • Dramatically removes the hardness of the water.
  • Easy installation
  • Space efficient
  • Longer life
  • Removes 99% of contaminants
  • The filtration system is quite effective
  • Requires minimum maintenance
  • Installation is fairly easy
  • NSF certified
  • Bit leakage some times. Need to use Teflon tape or else

Aquasana EQ-1000 Filter System

Among the best water filters, it will remove the hardness of the water and provide you with clean and healthy water from every tap in your home. 

The water of this filter system results in noticeably moisturized and softer skin and hair. Also, it removes 97% of the chlorine and provides you with great tasting water.

How It Removes The Hardness Of Water?

Due to its high-performance filter system, this system removes the hardness of the water. This system uses a Carbon filter and a KDF filter to maximize the reduction of contaminants while maintaining the mineral balance in your water.

Also, this filter removes 97% of chlorine and other contaminants like mercury, herbicides, VOCs, pesticides, and more.

This filter is long-lasting and cost-efficient because it saves two times more than other models for one million gallons or ten years of purified water.

To stop leaks, ensure that the filters are tightened to their caps, and the O-rings are in the proper position.

With its easy maintenance feature, you don’t need any draining or black flushing. You can easily replace its filter after every two months for better results.

By using an up-flow dual-tank design, this system prevents clogging while extending the contact time between the water and contaminant-grabbing media.

Note: To increase the system’s flow rate, please ensure to change the pre and post-filters every 1-3 months, depending on the level of sediments in the system.

Key Features

  • Excellently removes the hardness of the water.
  • Requires less maintenance
  • Long-lasting
  • Cost-efficient
  • High duty performance
  • Very Easy To Maintain
  • Remove 97% of Chlorine
  • Carbon & KDF filtration media have premium quality
  • Large Capacity
  • Expensive

Best Whole House Water Filters For Well Water With Iron

Culligan WH-HD200-C Filtration System

This Culligan heavy-duty filtration system forcefully removes the hardness of water by reducing the dirt, contaminants and other harmful metals and substances.

If you don’t have much space, this system is perfect for you because it does not take much space and is best for a residential home, apartment or condo, etc.

How Does It Treat Hard Water?

The HD200-C whole house water filtration system for added durability includes a one-inch stainless steel inlet and outlet connectors. A bypass shutoff valve and an integrated bracket are also part of the system. 

In addition to rust, scale, sediment, dirt, silt, and sand, the Culligan whole-house sediment water filter also removes both coarse and fine sand.

Moreover, it also removes the contaminants, which are the leading cause of bad taste and odour. Depending on the filter cartridge you’re using, it may also reduce the taste and smell of aesthetic chlorine in your water.

Filters are compatible with water tanks ranging from 10 gallons to 24,000 gallons for three to six months.

Its battery-operated filter life monitor is one of the filters’ most unique features. Culligan’s system notifies you when to replace your whole house filter, which is not the case with most whole house filters.

Key Features

  • Stainless steel reinforced inlet/outlet connectors
  • Expertly handles hardness of water
  • Removes harmful metals and substances
  • Long-lasting
  • Space-efficient
  • Heavy duty
  • Easy installation
  • Low maintenance
  • NSF certified
  • Effective for hard water
  • Need to use teflon tape

Express Water Heavy Metal Filter System

Express Water filter is a fantastic combination of design and functionality. This can be mounted or unmounted depending on the need.

With its standing stainless-steel frames, this Filtration System can last a long time without deteriorating. In addition, this system doesn’t reduce Total Dissolved Solids (TDS).

In What Ways Does It Removes Hard Water?

This filter system uses 3-stage filtration, which helps a lot in removing the hardness from the water.

  • In the first stage, sediments are removed. Removing residue from a reservoir involves the collection, transportation, and delivery of sediment from the reservoir.
  • The second stage of filtration involves the KDF filter. This filter traps contaminants and heavy metals like mercury, chlorine, arsenic, cysts, other microorganisms, etc.
  • In the third stage of filtration, activated carbon blocks remove pharmaceuticals, turbidity, and pesticides from the water and improve the quality and taste of water.

This whole house water filter is efficient and designed to be easy to use. Due to its simple “point of entry”, the filtration system provides high volumes of water and adds no chemical.

Because of its heavy-duty, it can provide up to 0.25 gallons per second. Its filter can provide up to 100,000 gallons of water and is best for 6-12 months of use.

Key And Smart Features

  • It completely removes the hardness of water
  • 3-stage filtration technology
  • Durable design
  • Removes over 80 different contaminants
  • Pressure gauges built-in the system
  • Heavy-duty, durable construction
  • Simple installation and maintenance process
  • Removes most heavy metals from tap water
  • NSF/ANSI certified
  • Replacement filters must be exact matches

General Electric GXWH04F Filter System

If you are a small family, this filter system is best for you because this filter removes all the visible contaminants and harmful particles in your water supply. This product is a big plus for people who rent. 

After it was installed, many users appreciated the taste and transparency of their water and were relieved that their water pressure did not change. 

How Does It Remove Hardness From Water?

This GE water filter provides you with the best quality water by removing chlorine, the leading cause of bad taste and odour.

Also, with its advanced filtration technology, it removes sediment, rust, and other heavy metals and substances and removes the hardness of your water supply.

Having a filtration life of about three months, this filter is long-lasting. Although for better results, replace the filter after every three months.

There is a convenient feature on this model that indicates when you need to change the filter. Also, this filter system is NSF/ ANSI certified.

With its smaller size, this system ensures easy installation, and it also comes with a housing wrench and mounting bracket.

Key Features

  • Easy to install
  • Pressure relief valve
  • NSF and ANSI certified
  • Three-month filter life
  • The remote filter reminder light
  • The remote filter reminder light
  • NSF certified
  • Effectively removes hardness
  • High quality
  • Ideal for small family

How To Identify The Hard Water?

You may notice these symptoms when using hard water:

  • Soap that won’t lather 
  • Dingy clothes 
  • High utility bills 
  • Unexpected appliance breakdowns
  • Filmy residue on dishes 
  • Limescale stains on sinks and bathroom fixtures 
  • Itchy skin 
  • Dry hair 

Things To Consider Before Buying The Hard Water Filter

To get the perfect whole house water filter for hard water, you must consider the following things:

1- Capacity

Your first and foremost consideration must be the capacity of the water filter system. Firstly you have to determine how much soft water you need on a daily basis.

Then you have to make a decision depending upon the size of your family. If you have a large family, then it is recommended that you should go with the large capacity water filter system.

2- Functionality

It is also one of the most important things that you must consider. Make sure that the water filter system that you are going to buy, must effectively remove the contaminants in order to make the water softener.

Also, ensure that the water filter system removes the iron, rust and dirt, etc., so that the water will be fully softened.

3- Maintenance

No doubt, every water filter system for hard water requires maintenance. However, it is recommended that you stick with the water filter that requires low maintenance.

This will save your efforts along with time. Moreover, the filter system has to be maintained with great care, which increases the risk of damage.

4- Design

Make sure that the filter design must be convenient. But your first preference will be an up-flow dual-tank design.

This design prevents clogging while extending the contact time between the water and contaminant-grabbing media.


No doubt, a whole house water filter is the best option to treat hard water. It provides numerous benefits and supplies clean and healthy water in your entire house.

At last, you should consider the buying guide before buying any water filter system. This method will lead you to the perfect whole house water filter system for hard water.

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