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Whole House Filters Buying Guide

Why buy from us?

We are a family owned Irish company who take great care in providing the best possible service.

Having supplied Reverse Osmosis to domestic, industrial and commercial customers all over Ireland we are your ideal partner. 

We offer unrivalled customer service and have great knowledge on our products.

Why buy EcoSoft?

EcoSoft, part of the BWT group is one of the most popular global brands when it comes to water filtration. EcoSoft supply residential, commercial and industrial size Reverse Osmosis units.


Certification is very important in relation to water treatment and these units are all fully certified ensuring safe and reliable water.

Why would I need a whole house filter?

When we talk about whole house filtration primarily the interest is in the below topics:

General Comments about filter housings

Many solutions to treat water use filter cartridges that reside in filter housings, there are a number of different sizes available, see below for a general guide:

  • Note: Cartridge dimensions are measured in diameter x length in inches.

  • 2.5" x 10" housing & cartridges

  • 2.5" x 20" housing & cartridges (not used so much)

  • 4.5" x 10", often referred to BB10 housing & cartridges 

  • 4.5" x 20", often referred to BB20 housing & cartridges

  • Industrial solution often use multi-round and bag filtration.


As a general rule the larger the filter housing the more flow that can go through the filter and the less often the filter needs changing. Housings are available with a clear bowl which is often helpful, these are slightly more expensive and often have different temperature and pressure ratings.

Housings can be daisy-chained together if multiple filtration steps required. Specific flow rate detail can be found on each product page.

Sediment Removal

A surprising amount of debris can enter from both the mains water system and a private well. Over time sediment can build up and damage both the household and heating water systems.

The most common sediment filter sizes are 20µm, 10µm, 5µm & 1µm. Of course larger and smaller sizes are available. We also sell a dual gradient filter which is our most popular, this has an outer 20µm and an inner 5µm layer, this allows you to have a single housing to do dual filtration that would typically need two housings.

Water Parameter Adjustment

Typical house installations use a 10 or 20 micron particle filter cartridge.

Advanced cartridges are available such as:

Carbon Block Cartridge

Activated Carbon Cartridge

Iron Reduction Cartridge

Hydrogen sulphide reduction Cartridge

Where should I install?

They can be installed externally if a suitable place available.

The BB10 can fit under the sink and catch all incoming water.

Most users install in the attic as easy to tap into the main supply to the water tanks. This would mean the water to the kitchen sink is not filtered as the downside.

How often do the filters need changing?

This really depends on usage, for a typical household changing the cartridge every year is recommended.

Will I be able to fit myself?

Our aim is to sell to the domestic market for self-installation.

The EcoSoft units are the most friendly on the market with clear instructions are colour coded parts.

Parts are supplied to account for installation in a typical Irish plumbing installation.

We are on hand to provide support at any time required.

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