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Aquasana vs Culligan: Choosing the Best Water Filter for Your Needs

Aquasana vs Culligan Choosing the Best Water Filter for Your Needs

Finding the perfect water filter for your home can be a daunting task, especially with so many options available. Two renowned brands, Aquasana and Culligan, have established themselves as top contenders in the industry.

In this article, we will compare Aquasana and Culligan water purification systems to help you make an informed decision. Discover the key differences, strengths, and considerations to ensure you choose the right water filter for your specific needs.

Let’s dive in and explore the world of Aquasana and Culligan water filters.




7.48 x 8.26 x 16.33 inches


9 x 46 x 44 inches

9 pounds

Item Weight

7 gallons per minute

WHR-140 Replacement Filter Cartridge

Compatible Filters


Shower pipe

Connection Type

Shower pipe

Culligan WHR-140 filter cartridge, Culligan HSH-C135 shower filter

Accessories Included

Massaging shower head, Washers

Carbon filtration

Filtration Method

Carbon and KDF filtration

Chlorine, lead, mercury, mold, mildew, cysts, asbestos, and more

Contaminants Removed

Chlorine, lead, mercury, pesticides, herbicides, pharmaceuticals, and more

Varies by model, typically 2.0-6.0 gallons per minute

Flow Rate

Varies by model, typically 7-9 gallons per minute

Varies by model, typically 10,000-100,000 gallons

Filtration Capacity

1,000,000 gallons

Varies by model, typically 3-12 months

Filter Lifespan

Varies by model, typically 6-12 months

DIY installation with included instructions


DIY installation with included instructions

Filter replacement required


Filter replacement required

5 years

Manufacturer Warranty

1 year




Culligan WH-HD200-C

Editor’s Choice

Aquasana Whole House Water Filter System – EQ-1000

Check the Price on Amazon


Check the Price on Amazon

Overview: Aquasana vs Culligan

Overview Aquasana vs Culligan

Aquasana’s Water Filtration System


The Aquasana EQ-1000 Whole House Water Filter System is available. This system can remove toxins such as chlorine, lead, mercury, pesticides, herbicides, medicines, and others.

It used a combination of carbon and KDF filtration technologies to give clean and healthful water throughout the house. The system has a flow rate of 7-9 gallons per minute, making it suited for houses with greater water consumption.

With a filtration capacity of 1,000,000 gallons, the EQ-1000 can provide long-lasting filtration without frequent replacements. Aquasana offers several suitable filters, including the AQ-4105.

Culligan Water Filtration System


Culligan provides a range of Whole House Water Filter Systems, with one of their popular models being the Culligan WH-HD200-C. This system utilizes carbon filtration to remove contaminants such as chlorine, lead, mercury, mold, mildew, cysts, asbestos, and more.

The flow rate varies by model but typically ranges from 2.0-6.0 gallons per minute. The filtration capacity varies as well, typically between 10,000-100,000 gallons.

Culligan offers the WHR-140 Replacement Filter Cartridge for their systems, which requires replacement every 3-12 months depending on the model. Installation of Culligan systems is a DIY process, supported by provided instructions.

The company offers a 5-year manufacturer warranty for its products and has obtained NSF/ANSI 177 certification. Additional accessories like the Culligan HSH-C135 shower filter and filter cartridge are included with the system.

Maintenance & Installation Process: Aquasana vs Culligan

Maintenance & Installation Process Aquasana vs Culligan


Maintenance Features



Maintenance Schedule

Replace AQ-4105 Cartridge every 6-12 months (varies)

Replace model-specific cartridges every 3-12 months (varies)

Filter Replacement

AQ-4105 Cartridge

Model-specific cartridges

Pre-Filter Maintenance

Regular inspection and cleaning required

Regular inspection and cleaning recommended

Performance Monitoring

Regular monitoring of system performance and water pressure advised

Regular monitoring of system performance and water pressure advised


Installation Features



Professional Installation

Recommended due to system complexity

Recommended due to system complexity

Plumbing Connection

Connects to the main water supply line

Connects to the main water supply line

Bypass Valve Installation

Included (required)

Included (required)

Flushing Process

Necessary after installation

Necessary after installation

Manufacturer’s Support

Customer support available

Customer support available

What Are the Key Similarities and Differences Between Aquasana vs Culligan?

Key Similarities and Differences Between Aquasana vs Culligan


  • Both companies offer a range of home filtration products to remove toxic substances such as chlorine, lead, mercury, and more.
  • Both companies aim to improve water quality and provide clean, great-tasting drinking water.
  • They employ multi-stage filtration processes to eliminate impurities like chlorine, chemicals, and heavy metals.
  • Both systems come with additional features and benefits, such as built-in water softeners (Culligan) and fluoride filters (Aquasana).
  • Aquasana and Culligan systems are effective in reducing or eliminating odors and tastes in water.
  • Both brands prioritize the removal of harmful contaminants like pesticides, lead, and mercury.
  • Environmental sustainability is important to both companies, with efforts to reuse parts and use recyclable materials.


  • Aquasana specializes in reducing chlorine levels, while Culligan focuses on lead reduction.
  • Culligan consistently removes a higher percentage of mercury compared to Aquasana.
  • Aquasana uses activated carbon granules for chlorine removal, while Culligan employs an iodinated resin filter.
  • Culligan offers a 5-year manufacturer warranty, whereas Aquasana provides a 1-year warranty.
  • Aquasana tends to be more affordable overall, but specific Culligan models may have lower prices depending on the chosen filter.
  • Aquasana includes a fluoride filter, while Culligan does not offer this specific feature.
  • Neither product specifically targets sediment removal, which may require additional products during installation.

Aquasana and Culligan share the goal of providing clean, healthy, and tasty water through home filtration systems.

While both brands offer effective filtration and additional benefits, they differ in terms of their specific strengths, warranty periods, pricing, and filtration methods.

Considering these factors will help you make an informed decision based on your preferences and water treatment needs.

Pros & Cons: Aquasana vs Culligan

Cons Hydroviv Vs Aquasana Water Filters




Affordable price

Effective chlorine reduction

Built-in fluoride filter

Environmental sustainability

Great-tasting water

Shorter warranty period (1 year)

Limited filter options

No specific sediment removal




Strong lead reduction

Better mercury removal

5-year manufacturer warranty

Additional features like water softener

Established brand reputation

Higher price point

Limited fluoride filter option

No specific sediment removal

The Effects of Water Quality on Health

Water is an essential source of life for humans. Our health and well-being must have access to clean, contaminant-free water. In this part, we will talk about water quality and how it affects human health.

Drinking Water Contaminants:

  • Heavy Metals

Drinking water contaminated with heavy metals such as lead and mercury can be hazardous to human health. Long-term heavy metal exposure can harm the neurological system and essential organs.

  • Chemicals

Chemicals contained in drinking water, such as chlorine, pesticides, and other chemicals, can be harmful to human health. Some of these compounds are carcinogenic and increase the risk of long-term sickness.

  • Microorganisms

Bacteria, viruses, and parasites in water can cause illness and disease in people. Microorganisms including E. coli, Cryptosporidium, and Legionella can produce significant, even fatal, symptoms.

Water Pollution’s Health Effects:

  • Digestive diseases

Microorganisms in drinking water can induce digestive diseases such as diarrhea, nausea, and vomiting.

  • Nervous System Disorders

Heavy metals in drinking water can harm the nervous system, impair brain function, and alter infant development.

  • Cancer Risk

Some chemicals found in drinking water have been linked to the development of cancers such as bladder cancer, liver cancer, and colon cancer.

Aquasana and Culligan’s Role in Addressing Water Quality Issues:

  • Aquasana

Aquasana products purify drinking water by removing pollutants. Aquasana’s filtration system employs cutting-edge technology to remove heavy metals, pollutants, and microbes that could be harmful to human health.

  • Culligan

Culligan also provides safe and high-quality water solutions. Their solutions may remove heavy metals and hazardous compounds from drinking water, resulting in cleaner and healthier water.

Final Thoughts


Finally, both the Culligan and Aquasana water filters provide excellent solutions for cleaning your drinking water and providing you with healthier water at home. The decision ultimately comes down to personal preference and comfort.

Both devices meet the demand for a low-maintenance alternative that delivers cleaner and healthier drinking water.

The Culligan WH-CA-NPT surpasses the Aquasana AQ-4100 in faucet-style filters. It has a broader range of filtering options and is NSF certified, which certifies its effectiveness.

The Culligan water filter ensures that your water arrives in the purest possible state thanks to its vast filtration capabilities. You may be confident that dangerous contaminants are effectively removed from your tap water, and your fears about lead or other heavy metals seeping into your drinking water will be relieved.

The incorporation of the Culligan WH-CA-NPT in your daily routine will be immensely appreciated when you experience the crisp and refreshing water it offers, providing a flavour that meets up to your expectations.



It is advisable to change the carbon and particulate filters annually, while the reverse osmosis membrane should be replaced every 3-5 years. If you prefer, you can arrange for your local Culligan water expert to include your home in their service route and replace the water filters in your system upon your request.

Water provides various whole home water filtration systems that are specifically designed to decrease the presence of specific contaminants, including sulfur, chlorine, iron, and arsenic. It is important to consider systems that have received third-party certifications and to choose brands that offer professional installation and service for optimal performance.

Aquasana SimplySoft goes beyond traditional water softeners by utilizing the revolutionary SLOW PHOS salt-free water softening technology. This innovative approach naturally conditions your water, safeguarding your pipes against corrosion, all without the need for additional sodium additives.

The Aquasana Whole House Salt-Free Water Conditioner is designed to be connected to your main water line, providing protection for your entire home. It works by effectively dissolving excessive minerals found in hard water into tiny crystal particles that effortlessly flow through your plumbing system without any buildup over time.

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