Your Cart is Empty

Whole House vs. Under-Sink Water Filters: A Comprehensive Comparison

August 01, 2023 3 min read

When it comes to complete home filtration, homeowners have several options to choose from.


Two of the most popular water filter systems are whole house water filters and under-sink water filters. In this article, we will compare these two types of water filtration systems to help you make an informed decision about which one is best for your needs.

What is a Whole House Water Filter?


A whole house water filter, also known as a point-of-entry (POE) system, is a filtration device that treats all water entering your home. This ensures that every tap in your house delivers clean, filtered water for drinking, cooking, and bathing. Whole house water filters typically consist of one or more filtration stages, which may include sediment filters, activated carbon filters, and other specialized filters to remove contaminants like chlorine, heavy metals, and bacteria.

Some popular whole house water filters available at Awesome Water Filters include:

What is an Under-Sink Water Filter?




An under-sink water filter, also known as a point-of-use (POU) system, is a filtration device that is installed directly under your kitchen sink. These systems only treat the water at a specific tap, usually the kitchen faucet, providing filtered water for drinking and cooking purposes. Under-sink filters typically utilize a combination of filtration technologies, such as sediment filters, carbon filters, and reverse osmosis membranes, to remove a wide range of contaminants from your water supply.

Comparing Whole House and Under-Sink Water Filters




When deciding between a whole house and an under-sink water filter, there are several factors to consider, including:

  • Coverage: Whole house water filters provide comprehensive filtration for your entire home, ensuring that all water outlets deliver clean, filtered water. In contrast, under-sink filters only treat water at a specific tap, usually the kitchen faucet.

  • Installation: Whole house water filters are typically installed at the main water line, requiring more extensive plumbing work than under-sink systems. Under-sink filters are easier to install, as they only require a connection to the cold water supply line under your kitchen sink.

  • Maintenance: Both whole house and under-sink water filters require regular maintenance, including filter cartridge replacement. However, whole house filters often have larger filter cartridges that may last longer than those in under-sink systems.


  • Cost: Whole house water filters tend to be more expensive upfront, but they provide filtration for your entire home, making them a cost-effective choice in the long run. Under-sink filters are generally cheaper to purchase and install but only provide filtration at a single tap.

  • Contaminant Removal: Both whole house and under-sink water filters can effectively remove a wide range of contaminants, including sediment, chlorine, heavy metals, and more. However, under-sink filters, particularly those with reverse osmosis technology, can remove a broader spectrum of contaminants, making them ideal for areas with severely contaminated water supplies.

Making the Right Choice for Your Home

When choosing between a whole house and an under-sink water filter, consider your specific needs and preferences. If you want comprehensive filtration for your entire home and are willing to invest in a more extensive system, a whole house water filter may be the best option for you. On the other hand, if you are primarily concerned with improving the quality of your drinking water and cooking water at a specific tap, an under-sink filter may be the more cost-effective choice.

Final Thoughts

In addition to considering the factors mentioned above, it's essential to evaluate the quality of your local water supply and the specific contaminants you want to remove. This information can help you determine which type of filtration system is best suited to your needs.

To make the best choice for your home, consider exploring the wide range of whole house and under-sink water filtration systems available at Awesome Water Filters. Some popular options include:

By carefully considering your home's water filtration needs, you can make an informed decision between a whole house and an under-sink water filter system. Whichever system you choose, investing in a high-quality water filtration solution will provide you with clean, safe, and great-tasting water for your family to enjoy.