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Oasis Whole House Filtration System

Oasis Whole House Water Filter

Start enjoying safe, chlorine-free water right away by using a whole house water filter.
Reduce the strain currently placed on your immune system and you may even get rid of long-standing symptoms - from sinus and respiratory problems to dry, itchy skin. Read More

Please see below for more information or contact us

£424.80 inc VAT

£354.00 ex VAT
In stock

All prices include VAT where applicable

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  • Description
  • Technicals
  • Downloads
  • Installation
  • How it does the job
  • Delivery and Returns
  • Compatible Cartridges
  • Reviews

The Oasis whole house water filter is ideal for a 1 to 4 person household.  For larger capacity, try the Oasis 2. 

Start enjoying safe, chlorine-free, healthy water right away  
Reduce the strain currently placed on your immune system and you may even get rid of long-standing symptoms - from sinus and respiratory problems to dry, itchy skin.

Provides clear clean water, free of sediment and chlorine, to the whole house.  It connects to the incoming mains water supply.

The Oasis whole hosue water filter comprises of two filter cannisters connected in series: 

  1. The incoming water first passes through the Prefilter, which removes sediment and particles. 
  2. It then passes through the 0.6 micron Chlorine, Taste and Odour Removal Carbon Block Filter, which is effective against a wide range of chemical contaminants, including chlorine.



Performance Information

  Oasis Oasis 2
Working Temperature Max. 37°c Max. 37°c
Working Pressure Max. 6 bar Max. 6 bar
Water Connection 1" threaded 1" threaded
Weight 8KG (boxed) 12KG (boxed)
Height 370mm 600mm
Width 490mm 490mm
Depth 220mm 220mm
Flow Rate 12 litres per minute 24 litres per minute
Capacity (Chlorine Removal) 300 000 litres 600 000 litres


IDTJ.com Whole House Installation and User Guide (20140805_IDTJ_Whole_House_Installaton_and_User_Guide.pdf, 4,126 Kb) [Download]

IDTJ.com - Whole House Filter Cartridge Replacement Guide (20150817_-_IDTJ_Whole_House_cartridge_changing_instructions.pdf, 703 Kb) [Download]

Our products and solutions are no different from any other appliance buy or home/ office improvement you make.

To help makes things easier for you, we've given a guideline on the approximate skill-level and time involved in the installation of this product:

DIY: advanced; ½ day

Professional:  plumber; 2-3 hours

Please note: some of you might think you're handier than you are! This is a guideline only, intended only to help you understand how simple installation is and whom you could ask to do it for you. If you were unsure, we would recommend getting the professionals in!

Feel free to download our installation guide


Problem Possible faults Solutions
No Water
  • Mains water Is off
  • Bypass valve not open
  • flow not directed to filter
  • water flow in wrong direction
  • Check that the main stopcock is open and that the mains water is still on.
  • Check the bypass valves 1 and 3 are fully open.
  • Check the top of the bypass housing is set to “Filter”
  • Check direction of water flow


Low Water Flow
  • Plastic still on cartridge
  • Low water pressure
  • Pre-filter blocked
  • Bypass valves not open
  • Check that you have removed all the wrapping from a new filter cartridge.
  • During periods of high water demand the pressure may fall. If running a bath or other appliance at same time your water pressure may drop to those appliances.
  • Replace the pre-filter cartridge.
  • Check that the bypass valves 1 and 3 are fully opened.


Chlorine Smell
  • Water flow is bypassing the water
  • Water cannot flow to filter
  • Filter cartridges not properly sealed
  • Check bypass valve 2 is fully closed.
  • Check bypass valves 1 and 3 are fully open.
  • Check sealing washers on the main filter cartridges are in place.
Water Leaks
  • Condensation on housing
  • Seals
  • Housings
  • Joints
  • Condensation on the outside of the filter housing may occur, resulting in a frosted appearance of fine water droplets on surface. This does not of course mean that there is a leak in the system. Insulate the area around the filter, or reposition it.
  • In the event of a leak carefully examine its source. Water from a leak may run along the pipe work - it may drip, or collect, some distance from the actual position of the leak.
  • Ensure that the ‘O’ seals and the areas in which they are located are clean. Any small piece of debris on the seal of the surrounding area could cause a small leak. Apply a smear of silicone grease to the seal.
  • Ensure that the filter housing is screwed fully onto the head works. This is essential both for the internal seal and the housing seal.
  • Check that you only have one seal at each end of the cartridge.
  • Leaks occurring at the elbow joints or centre connection will require the fitting to be removed. Re-apply plenty of PTFE tape and re-assemble and test.





Here are just some of the ways it does the job:


  • One of the most efficient whole house filters out there and is extremely cost-effective to run.  It’s suitable for large households.

Better Consumption:

  • Effective filtration of Chlorine and other various chemicals;
  • Filtration of particles and sediments above 1 micron.

Feel good:

  • Compact and Stylish design;
  • Improved appearance and odour of water;
  • Improved condition of skin and hair.


  • Simple installation process.


  • Easy to maintain. You are also automatically put onto a reminder where a member of our staff will give you a friendly call to tell you when to think about renewing your cartridges, so that you do not have to worry about when to change them.


Here is a guide to delivery and returns.  We are constantly looking to minimise delivery costs so some products may vary.  All available delivery options will be shown in the basket and correct delivery will be calculated before you check out.  You will only be charged one delivery cost.   

Not all options available for all products.

To calculate accurate delivery cost to any address, please click ‘Estimate delivery cost’ above.  

International deliveries: Please call us for more information on international deliveries

Collection from ItDoesTheJob.com HQ available for some products. 

We think you’ll be more than happy with your purchase.  If you’re not, simply return to us within 30 days.  

Read more about Delivery and Returns  

New cartridges/ systems: Our water filters automatically come with the optimum cartridges for 99.9% of people- designed for British water. However, should you require/ desire, other specialised cartridges are available, see table below or contact us for more advice.  


Compatible Cartridges:

Cartridge Options Key Elements It Removes More Information
Reccomended (Default):
Cartridge Set For 'Oasis' Whole House Systems

Chlorine, Tastes, Odours...

High Capacity Carbon Block Data Sheet


Cartridge renewals: If you buy a water filtration system or a water filter cartridge from us, we have a complimentary reminder service- we’ll remember what you’ve got and when it’s due so you don’t have to.  If you think we've forgotten you then please get in touch we'll do the rest!

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