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Scale Block Whole House Scale Inhibitors


Our Scale Block Whole House Scale Inhibitors are tried and tested limescale prevention systems for your home. Using a unique technology called TAC (Template Assisted Crystallisation) they effectively treat hard water to prevent limescale formation without removing healthy minerals like calcium and magnesium. Scale Block systems can be installed at the point of entry to treat water feeding your whole house, the treated water is safe to drink so you don’t need to worry about a hard water line for drinking.

Requiring no electricity, no salt and little maintenance these systems can last up to 3 years before the media inside needs to be replaced.

Why Choose Our Whole House Scale Inhibitors?

  • Eco friendly alternative to a traditional water softener
  • Low maintenance with no salt top-ups required
  • Long life media lasts up to 3 years
  • Treated water is safe to drink

Need help with our Whole House Scale Inhibitors? Give us a call on 01622 933 853


Scale Block Whole House Scale Inhibitors work using TAC technology. This is where scale-forming molecules such as calcium and magnesium are stuck together to form inactive crystals which float freely through pipes and heating systems, without sticking to surfaces. The chemistry of your water remains unchanged, meaning you can enjoy mineral-rich drinking water without the associated problems of hard water like limescale build-up. This technology is the first effective salt and chemical free limescale prevention method, with replacement cartridges costing less on average than running an ion exchange water softener.

Designed to treat mains water at the point of entry these low-maintenance water conditioners have no moving parts to break or fail. Smaller Scale Block systems can also be installed to protect a single appliance from limescale build-up, like a washing machine or dishwasher. To help you choose the right system for your home please refer to our comparison table listed under the ‘resources’ tab below.

A Reliable Salt Free Water Softener Alternative
There are many alternatives to a traditional ion exchange water softener on the market, however few of these are proven to be effective. Our Scale Block Whole House Scale Inhibitors are one of the few tried and tested options available that can both prevent limescale formation and clear existing build-up. We have even conducted our own trials of these systems and you can check out our findings for yourself under the ‘resources’ tab.

How Often Do I Need To Replace The Cartridge In These Whole House Scale Inhibitors?
For single appliance systems (SB10-SL) the cartridge should be replaced annually. For larger systems (SB10-BB & SB20-BB) the cartridge needs to be replaced every 2-3 years. There will be signs that the cartridge needs replacing such as scale formation on taps or shower heads.

Key Product Information

  • Prevents limescale formation and clears existing scale deposits throughout your home
  • Independently tested up to 99.6% efficiency using German DVGW protocol
  • Tried and tested water softener alternative
  • No electricity or access to a drain required
  • Salt-free water conditioner

Please note that in new homes copper pipework needs to be passivized for a minimum of 4 weeks before installation

Need help with our Whole House Scale Inhibitors? Give us a call on 01622 933 853


Suitable For

Domestic, Limescale Control, Scale Inhibitor, Drinking Water, Home & Office, Food & Beverage, Coffee Machines

Port Sizes

Scale Block Single Appliance: 3/4"
Scale Block Whole House (1-2 Occupants): 1”
Scale Block Whole House (Up To 6 Occupants): 1”


Scale Block Single Appliance: 122mm Width, 325mm* Height, 107mm Depth
Scale Block Whole House (1-2 Occupants): 190mm Width, 360mm* Height, 185mm Depth
Scale Block Whole House (Up To 6 Occupants): 190mm Width, 617mm* Height, 185mm Depth
*Not Including Wall Bracket

Flow Rates

Scale Block Single Appliance: 4 Litres Per Minute
Scale Block Whole House (1-2 Occupants): 10 Litres Per Minute
Scale Block Whole House (Up To 6 Occupants): 20 Litres Per Minute

Supplied With

Filter Housing (With Mounting Bracket And Screws)
Cartridge Containing Scale Block TAC Media

Max Water Hardness


Temperature Range

5⁰C – 43⁰C

Max Pressure



Resources Available For This Product:


Scale Block Whole House Comparison Table

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