Osmio PRO-III Ultimate Whole House Water Filter System

Special Price £499.00 Regular Price £699.00
In stock

The Osmio PRO-III Ultimate Whole House Water Filter System one of our top of the range and finest whole house water filter system for those seeking nothing but the very best. Please note whole house filter systems are NOT for limescale, please see our softeners section. Whole house systems are usually combined with softeners (either salt or non-salt based) to achieve great results and reverse osmosis point of use system to achieve the complete gold standard of home treatment.

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Osmio PRO-III Ultimate Whole House Water Filter System

The Osmio PRO-III Ultimate Whole House Water Filter System is our one of our top of the range and finest whole house water filter system for those seeking nothing but the very best. The PRO-III Ultimate is designed to remove a wide array of water impurities (chlorine, toxins, heavy metals, etc) and to also remove any unpleasant tastes or odour issues which may be present in your water supply. The Pro-III consists of three filters and housing bowls. The housing bowls are all separate to enable greater flexibility for installation (i.e. in an L shape to be placed into corners, etc).

This system comes with 3 separate housings and 3 filters. The filter configuration is as follows:

Housing 1 - 4.5 x 10 Inch Black Line Housing with Active Ceramics Whole House Filter. This filter is replaced every 3 years or 300,000 litres and is highly effective at the removal or reduction of a vast array of impurities in water including chlorine, hormones, fluoride, lead and so on. This filter is also highly advanced and effective at killing and containing bacteria in water such as E-coli, Pseudomonas and other microorganisms. The filter uses a unique filtration method using a patented active ceramics blend, so it has 4 different active ceramics which treat the water in a different way and is completely unique. Not only that but the filter adds antioxidants and minerals back into the water after filtering and additionally makes water more alkaline by raising the pH value, usually increasing the pH to around 0.5 a point or more (however this could be more or less depending on a number of specific variables including the presence of certain dissolved solids and gases).

Housing 2 - 4.5 x 10 Inch Black Line Housing with Carbon Block 5 Micron. This filter further reduces chlorine and nay taste and odour issues that may be present in the mains tap water. The carbon block also reduces certain Volatile Organic Chemicals (VOC) from drinking water. The coconut base of the carbon also makes a slightly sweeter taste which is pleasant. The carbon block has a very high dirt holding capacity with virtually zero pressure drop. The filter is rated for 46,000 litres so is usually changed every 6 months.

Housing 3 - 4.5 x 10 Inch Black Line Housing with GAC and KDF Process Media Filter Cartridge. This cartridge primarily reduces the bad taste and odours of chlorine and other chemicals in the water. This filter contains Granular Activated Carbon (GAC) and Kinetic Degradation Fluxion (KDF). When these 2 are combined, they are known to kill algae and fungi, control bacteria growth and remove chlorine, pesticides, organic matter, rust, unpleasant taste and odour, hydrogen sulphide, iron, lead, nickel, chromium, cadmium, calcium, mercury and other organic compounds. The filter is ideal for situations where you need a higher flow rate or have very low water pressure problems.

The system also comes supplied with the brackets with screws and large housing spanner.

The Eco-Advantage

At the end of the life of the main active ceramics cartridge, you can take out the ceramics and use it to fertilize your garden to improve the health of plants or grass and soil drainage. The plastic housing can be put through your normal recycling waste. Active Ceramic and Post Carbon Filter are both NSF certified.

Osmio's Best Whole House Water Filter System, combining the best media to deliver results


  • Active Ceramic, Carbon Filtration and KDF media make this Osmio's best system, reducing the widest level of impurities to make healthier water for your home
  • High Quality Virgin Polypropylene, thick, heavy weight and robust. Avoid light, thinner and mixed with calcite housings as these do not stand the test of time. 
  • Brass threaded 1" BSP Female Ports make reliable plumbing connections, unlike plastic threaded ports which easily crossthread when connected to brass male fittings.
  • Integrated Pressure Release Buttons to release air pressure.


Best Whole House Water Filter System



Osmio's Best Whole House Water Filter System



Download the Osmio Whole House Water Filter Systems Manual

Download this manual which covers the complete installation and maintenance guide for the entire Osmio Whole House FIlter Systems range.

Download Osmio Whole House Filter Systems Manual

More Information
Model Osmio PRO-III Ultimate Whole House Water Filter System
In Depth Ideal for small/medium or large homes with pipework up to 1” diameter and flow rates up to 45 LPM recommended for the best filtration.

Drink filtered water from any tap throughout the house.

Unit will remove or reduce chlorine, toxins, heavy metals, hormones and fluoride. Effective at killing and containing bacteria in water such as E-coli, Pseudomonas etc.

De-chlorinated water which is less aggressive on skin and hair in the shower.

Produces pH enhanced water with minerals and increased alkalinity. Increases anti-oxidants in the water too.

No ongoing maintenance or need to backwash system. Merely replace cartridge at end of life at low cost.

Environmentally friendly due to long life nature and less going to landfill. No more bottled water. Naturally degradable ceramics which can be scattered on lawn and plants at end of life for improved soil drainage and plant growth.

The complete package comes with 3 filters in total:

Osmio Active Ceramics Large Whole House Filter: 3 year filter life or 300,000 litre capacity. Life of filter may vary depending on water hardness and local water quality.
Osmio 4.5 x 10 Inch 5 Micron Carbon Block - filter life 6 to 12 months depending on usage.
Osmio 4.5 x 10 Inch KDF and GAC Process Media Filter Cartridge - Filter Life: Approximately 12 months or 152,000 litres depending on usage and local water quality

Additionally the full Kit includes filters, three full flow Black Line housings with 1" BSP female ports, brackets with screws and large housing spanner.

Housing Specifications:

Straight thread design on sump EPDM O-ring
Max Pressure: 90 psi (6.3 bar)
Min Pressure: 2.5 bar recommended
Max Temperature: 125°F
Service Flow Rate: up to 45 LPM @ 60 psi
Inlet/Outlet: 1"
Housing Options: Pressure Relief
Standing pressure loss ~0.5 Bar at 2.2 bar pressure

Each Housing has the following dimensions (there are three housings in total)
Height: 14 "
Width: 7-1/4 "

Pressure Loss: To help avoid any potential disappointment with resulting pressure loss, we advise not to install this system if your standing water pressure is lower than 2.5 bar.
Filter Parameter Bacteria, E-coli, Chlorine, Sediments, Nitrates, Fluoride, Hormones, Pharmaceuticals, Heavy Metals
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Product Questions

How much space is needed for installation?
Question by: Stuart Gwilym MacMillan on 7 Mar 2022, 19:59
There are 3 filter housings, each of 7.25" (184mm) diameter. The housings are 14" (356mm) in height but need at least another 2" (51mm) space to allow the filter bowls to drop down for filter changes.

Total footprint if installed with connecting nipples as shown on the product picture would be 655mm wide x 460mm height x 210mm depth, without allowance for connecting pipes/ hoses.
Answer by: mark burness (Admin) on 8 Mar 2022, 12:55