Inline Filters for Your Water System: Discreet but Functional Filters - Filter Flair

Installing an inline filter is a great way to keep your drinking water clean and safe. Inline filters are easy to install and can be used as a single filter or as part of a multi-stage system. Primarily consisting of carbon, they are an excellent way to improve the taste of your drinking water without the need for an expensive system.

This blog post will discuss the benefits of inline filters and how to choose the right one for your needs.

What Exactly Is In-Line Water Filtration?

Inline water filters are compact, easy-to-install cartridges usually containing a carbon block or GAC that can be installed under your kitchen sink or behind an appliance to instantly improve your drinking water quality. As water passes through the inline filter to your tap or appliance, water passes through the carbon within the cartridge which absorbs contaminants such as chlorine and sediment before it reaches your tap.

Typically featuring push-fit connections at each end, inline water filters offer a quick and easy solution for your water filtration needs without the expense of purchasing an expensive system and can be combined with a Single Flow Tap or 3 Way Tap to provide you with filtered water on demand.

Inline filters are also commonly used as part of reverse osmosis or multi-stage filtration system where either a pre-filter is required to reduce sediment or as a post-RO filter for water polishing.

The Benefits of In-Line Water Filters

  • Provides filtered water on demand

  • Inexpensive

  • Long Lasting

  • Easy to fit and replace

  • Available with different connection sizes and types

  • Available with or without limescale inhibitor

How to Choose the Right In-Line Filter

You should consider a few things when deciding if an inline filter is suitable for your needs. Listed below are some factors you should consider before deciding which inline filter to buy.

Carbon Block or GAC

The two most common types of inline filters contain carbon block or granular activated carbon. A carbon block often provides filtration down to 1 micron, whereas GAC filters are usually around 5 microns so not quite at the same level of contaminant removal.

But that's not the only thing to consider; GAC filters tend to offer better flow rates than carbon block filters, so you should decide what's most important to you before making your purchase.

Do You Have Hard Water?

Once you've decided on whether you are going for a carbon block or GAC filter you will want to decide whether you need a scale inhibitor from your filter.

Most inline filters will have a scale inhibitor option so if you live in a hard water area and would like additional protection against limescale buildup, it's always recommended to choose your filter with this included.

An example of these are the Microfilter K3 and the Microfilter K3P - both of these inline filters contain a 1 Micron Carbon Block however the K3P has the additional benefit of limescale inhibitor.

What Connection Type Do You Need?

Inline filters come with an array of connection types, from 1/4" push fit to 3/8" stem to 3/8" female connections, there are options for each requirement. The most common type is 1/4" push fit and this is widely used with most installations, so if you already have a filter installed it's likely going to be this. That being said, it's always worth checking to ensure you get the right connection.


Inline filters provide a convenient and affordable way to improve your water quality. Removing sediment, chlorine, and other impurities from your water supply allows you to enjoy better-tasting drinking water and reduced maintenance costs for your appliances. When shopping for an inline filter, consider the type of contaminant you want to remove and the unit's flow rate and capacity. With so many options available, it's easy to find the perfect inline filter for your home or office.

By understanding the different inline filters available, you can select the best one for your needs. At Filter Flair, we offer a wide selection of genuine inline filters to meet your every demand. Shop with us today and get free shipping on orders over £30!


Q: What filtration elements are used for inline water filters?

Carbon blocks and Granular Activated Carbon (GAC) are the most popular types. GAC filters are simple and economical, although carbon block filters such as the Filter Flair Inline Water Filter with Scale Inhibitor - 1/4" Push Fit are more reliable. Both varieties contain a scale inhibitor to prevent the numerous issues limescale can bring about.

Q: Does Filter flair offer replacement cartridges for all types of filters?

Yes, we have the widest range of genuine filters from known brands available in our shop. Filter Flair takes pride in offering tour customers only the finest products and services. If you have any water filtering requirements we haven't addressed here, please don't hesitate to contact us.

You Might Also Like

View all
The Ultimate Guide to Choosing a Whole House Water Filter

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 w...
10 Reasons Why You Should Filter Your Tap Water

10 Reasons Why You Should Filter Your Tap Water

In today's health-conscious world, the quality of the water we drink is more important than ever. Many of us are turning to water filters to ensur...
Choosing the Right Water Filter: The Importance of NSF Certification

Choosing the Right Water Filter: The Importance of NSF Certification

When it comes to purchasing a new water filter it can be difficult to know what to look for, and often, it's a relief just to find a filter that f...