The Ultimate Guide to Choosing a Whole House Water Filter

Ensuring your home's water is clean and safe is a priority for many homeowners. With numerous options available, selecting the right whole house water filter can be overwhelming. This guide will help you navigate the essentials of whole house water filtration systems, so you can make an informed decision that's right for your household.

Why Consider a Whole House Water Filter?

Whole house water filters, often known as point of entry (POE) systems, treat all of the water that enters your home. This means every tap, shower, and appliance benefits from purified water. Here are some key reasons to consider installing a whole house water filter:

  1. Comprehensive Filtration: Filters all the water entering your home, ensuring consistent quality throughout.
  2. Healthier Water: Removes harmful contaminants such as chlorine, heavy metals, bacteria, and more, protecting your health.
  3. Improved Taste and Odour: Enhances the taste and smell of your water by removing chemicals and impurities.
  4. Protects Plumbing and Appliances: Reduces scale buildup and sediment, prolonging the lifespan of your plumbing and appliances.
  5. Convenience: Provides consistent filtration without the need for multiple point-of-use filters throughout your home.

Key Factors to Consider When Choosing a Whole House Water Filter

When selecting a water filter for your home, it's important to consider several factors to ensure you choose the best system for your needs.

1. Filtration Technology

Different systems use various filtration technologies. Here are some common types:

  • Activated Carbon: Effective for removing chlorine, volatile organic compounds (VOCs), and improving taste and odour.
  • Reverse Osmosis: Provides thorough filtration via. an RO membrane but often requires electricity and produces wastewater.
  • Sediment Filters: Remove large particles like rust and dust.
  • UV Sterilisers: Kills bacteria and viruses with UV rays without using chemicals.
  • Ultrafiltration: An advanced method that uses a membrane with pore sizes typically in the range of 0.01 to 0.1 micrometres to remove particles and dissolved molecules from water.
  • Active Ceramics: Utilises specially designed ceramic beads that create an electrolytic effect as water passes through, effectively eliminating impurities. These ceramics are noted for their magnetic and semi-conductive properties, adding another layer of filtration.

2. Contaminant Removal

Understanding the specific contaminants in your water is crucial. A water quality report can help identify these. Choose a filter that effectively targets the contaminants present in your water supply.

Read more: 10 Things You Might Not Expect in Tap Water

3. Flow Rate

Measured in litres per minute (LPM) or gallons per minute (GPM), the flow rate indicates how much water the system can filter. Ensure the system you choose can handle your household's water demand without reducing water pressure.

4. Filter Lifespan and Maintenance

Consider the lifespan of the filter cartridges and the maintenance required. Systems with longer-lasting filters can be more convenient and cost-effective over time.

5. Installation and Space Requirements

Check the ease of installation and the space available for the system. Some systems may require professional installation, while others are more DIY-friendly. Ensure you have adequate space for the unit.

Understanding POU vs. POE Water Filters

What is the Difference Between a POU and POE Water Filter?

  • POU (Point of Use) Water Filter: These filters are installed at specific locations where water is used, such as under the kitchen sink or on a showerhead. They provide filtered water at the point where it is dispensed.
  • POE (Point of Entry) Water Filter: These systems are installed where the main water line enters your home, filtering all the water that flows into your house. This means every tap, appliance, and shower in your home gets filtered water.

Understanding Mains Water Filters vs. Whole House Water Filters

When researching water filtration systems, you may come across the terms "mains water filter" and "whole house water filter." These terms are often used interchangeably but can have different implications.

  • Mains Water Filter: Typically refers to filters designed to treat cold water coming from your kitchen tap only. These tend to be smaller units and are suitable for specific areas rather than the entire home.
  • Whole House Water Filter: Installed at the point where water enters your home, treating all water from every tap, including the water used in your boiler and for bathing. This type of filter ensures comprehensive filtration for the entire household.

How to Install a Whole House Water Filter

Installing a whole house water filter can vary in complexity. Here’s a general step-by-step guide to give you an idea of what’s involved:

  1. Choose the Installation Location: Select a spot near the main water line entry point to your home. Ensure there is enough space for the system and easy access for maintenance.
  2. Shut Off the Main Water Supply: Turn off the main water supply to your home to prevent any leaks during installation.
  3. Install the Filter System: Follow the manufacturer’s instructions for installing the system. This typically involves cutting the main water line, attaching the filter system using provided fittings, and securing the system in place.
  4. Connect the System to the Main Water Line: Connect the inlet and outlet ports of the filter system to the main water line. Ensure all connections are tight and secure.
  5. Turn On the Water Supply and Check for Leaks: Slowly turn on the main water supply and check for any leaks. Tighten connections as needed.
  6. Flush the System: Run water through the system for a few minutes to flush out any air or loose particles.

Maintaining Your Whole House Water Filter

Regular maintenance is key to keeping your whole house water filter running smoothly. Here are some tips:

  1. Replace Filter Cartridges as Needed: Follow the manufacturer’s recommendations for replacing filter cartridges. This can range from every few months to annually, depending on the filter type and water quality.
  2. Monitor Water Pressure: A significant drop in water pressure can indicate that the filters need to be replaced.
  3. Inspect the System Regularly: Periodically check the system for any signs of leaks or wear. Address any issues promptly to avoid damage.
  4. Keep a Maintenance Schedule: Track when filters were last replaced and when the next replacement is due.

Benefits of a Whole House Water Filter

Installing a whole house water filter comes with numerous benefits that make it a worthwhile investment for any home.

Health and Safety

  • Reduces Contaminants: Filters out harmful substances such as chlorine, lead, mercury, and bacteria, ensuring safer water for all uses. Please note, contaminant reduction will vary from system to system so please check with the manufacturer for specific reduction claims.
  • Improves Air Quality: By removing chlorine from your water, you reduce the amount of chlorine vapor released into the air during showers and dishwashing, which can be beneficial for those with respiratory issues.

Convenience and Cost-Effectiveness

  • Simplifies Filtration: Instead of installing multiple filters at various points of use, a single whole house system handles all the water entering your home.
  • Protects Appliances: Reduces scale and sediment buildup in water heaters, washing machines, and dishwashers, extending their lifespan and efficiency.
  • Saves Money: By preventing limescale and reducing the need for bottled water, you save on appliance repairs and water purchases.

Environmental Impact

  • Reduces Plastic Waste: With filtered water available from every tap, there's less need for bottled water, reducing plastic waste.
  • Energy Efficient: Many whole house systems, like those using nanotechnology, operate without electricity, contributing to lower energy consumption.

Highlighting a Quality Option: The BMB-1000 Hydra Whole House Filtration System

While there are many excellent options available, one standout choice is the BMB-1000 Hydra Whole House Filtration System. It’s designed with advanced nanotechnology and offers a robust, multi-stage filtration process without requiring electricity, wastewater, or a storage tank.

Key Features:

  • Nanotechnology-Powered Filtration: Provides efficient and thorough water purification.
  • Four Filters, Eight Stages: Delivers an extensive filtration process to remove a wide range of contaminants.
  • Energy and Space Efficient: Operates without electricity and does not require a storage tank, saving both energy and space.


  • Comprehensive Contaminant Removal: Effectively reduces bacteria, chlorine, heavy metals, sediment, limescale, and more.
  • Long Filter Life: Offers 6 to 12 months of filtration, depending on water quality.

The BMB-1000 Hydra represents an excellent option for those seeking comprehensive water quality improvement for their entire home. Its advanced design and broad-spectrum filtration capabilities make it a valuable and cost-effective addition to any household.

Common Questions About Whole House Water Filters

I Already Have an Undersink Water Filter. Is There Any Point in Getting a Whole House Filter System?

Yes, there are several reasons to consider a whole house filter system even if you already have an undersink water filter:

  • Comprehensive Coverage: A whole house system ensures that all the water in your home is filtered, including water for bathing, washing clothes, and running appliances.
  • Protection Against Chlorine Vapor: Filtering all the water entering your home reduces the amount of chlorine vapor released during showers and dishwashing, which can be beneficial for your respiratory health.
  • Extended Appliance Life: Whole house filters reduce scale buildup and sediment in your plumbing and appliances, prolonging their lifespan.

What is the Difference Between a Water Softener and a Whole House Filter System?

  • Water Softener: Specifically designed to remove scale causing minerals like calcium and magnesium that cause water hardness. They prevent scale buildup in pipes and appliances but do not remove other contaminants.
  • Whole House Filter System: Targets a broad range of contaminants, including chlorine, heavy metals, bacteria, and sediment, improving overall water quality. Some systems also include features to inhibit limescale, but their primary function is filtration.

Can I Use a Whole House Filter System if I Have a Private Water Supply?

Yes, you can use a whole house filter system with a private water supply, such as a well. However, it's essential to:

  • Test Your Water: Private water supplies can have unique contaminants. Conduct a thorough water test to identify specific issues.
  • Choose the Right Filter: Select a filter system that addresses the specific contaminants found in your water. Some systems are specifically designed for well water and can handle common well water issues like high iron or sulfur content.

I Have Low Water Pressure, Will a Whole House Water Filter Be Suitable?

Low water pressure can be a concern with some filtration systems. Here are a few tips:

  • Check Flow Rates: Look for a filter system with a high flow rate to ensure it can handle your household's water demand without significantly reducing pressure.
  • Professional Installation: A professional can help optimise the installation to maintain water pressure.
  • Pre-Filters: Using sediment pre-filters can prevent clogs and maintain better flow rates.

How Often Do I Need to Change the Filters of a Whole House Filter System?

The frequency of filter changes depends on several factors:

  • Water Quality: Higher contamination levels may require more frequent changes.
  • Filter Type: Different filters have varying lifespans. For example, sediment filters might need changing every few months, while carbon filters can last up to a year.
  • Usage: High water usage households may need to replace filters more often.

Generally, it is recommended to change filters every 6 to 12 months. Always follow the manufacturer's guidelines for the best results.


Investing in a whole house water filter is a smart decision for ensuring the health and safety of your family. By understanding key factors such as filtration technology, contaminant removal, flow rate, and maintenance requirements, you can make an informed choice tailored to your household's needs.

One standout option is the BMB-1000 Hydra Whole House Filtration System. This system leverages advanced nanotechnology and a robust, multi-stage filtration process, providing comprehensive water purification without the need for electricity, wastewater production, or a storage tank. Its efficient design and extensive contaminant removal capabilities make it a cost-effective and reliable choice for any home.

Remember, the best system for your home depends on your specific water quality issues, household size, and personal preferences. Take your time to research and choose a system that will provide clean, safe, and great-tasting water for your family.

For more detailed information and to explore our range of whole house water filters, visit our website. If you have any questions or need further assistance, our customer support team is here to help. By making an informed decision, you can enjoy the numerous benefits of improved water quality, including better health, enhanced taste, and prolonged appliance life.

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