About Us Contact Us Easy Returns Privacy Shipping Terms of Service
FREE SHIPPING on all orders!
FREE SHIPPING on all orders!
Skip to content
Scalemaster Softline SL-S Water Softener

Scalemaster Softline SL-S Water Softener

by Scalemaster
£699.99
Call for your best price

Notify me when back in stock

Fast, Free Shipping
extended warranty
we beat any price
friendly-expert support

Scalemaster Softline SL-S Water Softener

Is limescale build-up causing issues in your home? This Scalemaster Water Softener will eradicate it

Innovative Water Softener System - Efficient and User Friendly

  • High Flow Rates: Ensures your home is always supplied with softened water and stress-free, day after day
  • Low Salt and Water Usage: Use less water, reduce your expenses, and refill less often
  • No Electricity Required: Easy installation without the need for power connections or extra socket setups
  • Long Warranty - 5 Years parts, 2 Year Labour: Shop with confidence, thanks to a trusted long-term warranty
A Scalemaster Water softener front view
Delivery of a scalemaster water softener

Fast, Free Delivery

Quick Dispatch, No Hidden Charges

Support for a home water softener system

Friendly Expert Support

0121 630 1130

two arrows showing the Softline SL-S has hassle free returns

Hassle-Free Returns

Don't need it? Send it back

A pile of bank noters being saved on a home water softener vector

Save Money

Find a Better Price? We'll Beat It

This Home Water Softener has On-Demand Regeneration to Match Your Water Usage

  • On-Demand Regeneration: Designed to save salt, water, and energy, the system activates only when needed, extending the life of your Softline Water Softener
  • WRAS Approved Product: This water softener meets the high standards of the Water Regulations Advisory Scheme (WRAS), giving you confidence in its safety and compliance with UK regulations.
  • No Electricity: Non-electric Home Water Softeners work by using a mechanical water meter to measure usage, triggering regeneration only when the system deems it essential.
A home water softener system in black and blue front view

5 Year Warranty With This Scalemaster Water Softener

Ensure your home remains limescale-free with the Scalemaster Water Softener, backed by a comprehensive 5-year warranty. Enjoy long-term protection, hassle-free maintenance, and the comfort of knowing your investment is covered.

A sparkling clean kitchen from using a Scalemaster Softline Water Softener

Standard Installation of the Scalemaster Water Softener SL-S

  • Scalemaster recommends that a qualified installer or engineer performs the installation. Failure to install the system as instructed could invalidate the warranty
  • Do not install if the supply water pressure exceeds 6 bar (125 psi), unless a suitable pressure reducing valve has been installed on the water supply to the softener and set to 6 bar
  • Do not install the water softener in an area where the temperature can cause the unit to freeze. Freezing temperatures will damage the system.
  • Block or Tablet Salt: The Scalemaster® SL-S is known for its outstanding efficiency, using as little as 3400 grams of salt and 25 litres of water per regeneration, making it one of the most eco-friendly water softeners available
Scalemaster Softline SL-S installation diagram

No Electricity Required - What Are The Main Benefits of a Non-Electric Water Softener System

No Electrical Costs: Since it doesn't require electricity to operate, you avoid the ongoing costs associated with powering this Water Softener which can add up over time.

Efficient Regeneration: The mechanical water meter ensures that the system only regenerates when necessary, reducing the amount of water and salt used during the regeneration process. As a result, your water and salt expenses may be reduced.

Lower Maintenance Costs: Non-electric Water Softeners typically have fewer components that can fail, leading to potentially lower maintenance and repair costs over the life of the system.

Longevity and Durability: Non-electric systems are often more robust and less prone to breakdowns, which can save you money on replacements or repairs.

The Compact Water Softener That Fits Almost Anywhere

Even with its robust performance, the Scalemaster Softline SLS is designed to be compact, ensuring it fits seamlessly into small spaces, including under most sinks

  • Height 492mm x Width 235mm x Depth 475mm (500mm with connectors)
A cardboard box with a home water softener inside
A Scalemaster water softener with the lid off
A home water softener system by Scalemaster with the top off

Over 60% of homes in the UK have hard water, around 16m homes ! Obvious signs, such as frequent equipment failures, noisy boilers, diminished water pressure, and the accumulation of chalky, crusty deposits, point to the presence of hard water. Only a water softener can eliminate this issue, and it will also clean your pipes of chalky deposits that have built up over time. If left untreated, you may see signs such as reduced water pressure, damage to household appliances, leaking and burst pipes, poor water quality, reduction in your clothes quality, and increased energy costs. Additionally, you will almost certainly face the burden of extra cleaning to remove the unpleasant chalky deposits.

A tap damaged by Limescale before using a Scalemaster SL150
A shower door damaged by limescale before using a water softener

For comprehensive information about water softeners, including types and installation, visit our blog: Water Softeners

The damage caused by limescale can be both frightening and expensive. Why wait for it to happen? Invest in a Scalemaster Water Softener today

This SLS is Suitable for Houses and Larger Apartments

What's included with the Scalemaster Softline SL-S

  • Scalemaster Softline S-S Water Softener
  • 2 x 15mm or 22mm Hoses (If installation kit selected)
  • 2 x 3/4" BSP in/out adaptor
  • 4 x O-ring
  • 1 x In/out retaining bracket
  • 1 x Bracket retaining pin
  • 1 x 2m of 5/8" overflow tubing
  • 1 x 2m of 1/2" drain tubing
  • 1 x 2cc Silicone tube

For over 30 years, Scalemaster® has been a top provider of high-quality water treatment products. Their products are used residentially across the UK, Europe, and the US and are also used in places such as safari parks, hotels, dental and veterinary clinics, airports, and well-known restaurant and coffee shop chains


Scalemaster Limited PDF Logo

Scalemaster Water Softener SL150

Installation Manual


A PDF for Home Water Softener System SL-S

Scalemaster Softline SL-S 

Technical Data

Warranty Information

  • 5 Years parts, 2 Year Labour Warranty
  • * IMPORTANT: To qualify for warranty the softener must be registered and installed in accordance with the Manufacturers installation instructions. Warranty does not cover incorrect installation or setting up of the softener, site damage or resin contamination.
Height 492mm
Depth 475mm
Depth (Wtih Connectors) 500mm
Width 235mm
Approximate regeneration time 12 Minutes
Resin volume 4.5 Litre
Salt used per regeneration 340gm
Water used per regeneration 25 Litres
Inlet & Outlet 3/4” BSP
Drain & Overflow 1/2”
Power Source None (Water Pressure)
Installation Orientation Rear Only
Minimum/Maximum Operating Temp 2° - 23°C
Minimum/Maximum Working Pressure 1 1.5 bar Max / 6 bar Minimum*
What salt to use Tablet or Block
Warranty 5 Years parts 2 Years Labour

Ready to upgrade your home? Scalemaster Water Softeners come with fast, free delivery

Take a look at our other water softeners

Click here to view our full range