TwinTec S4

The TwinTec has been designed and engineered in the UK by Harvey Water Softeners and works with all types of British plumbing systems and all size families, to make life simple. Conforms to British Standard BS14743.
  • Fits easily in kitchen cupboard
  • Suitable for 3 bathrooms
  • Twin tank design guarantees 24/7 soft water
  • Low salt consumption
  • 10 years guarantee

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10 year guarantee

Designed by the leading manufacturer

Made in the UK

Made from recycled plastic

Why buy a water softener from TwinTec?

The most advanced non-electric, block salt water softener ever made. Perfectly tailored to the UK market.
Our water softeners pack a little more punch than all the rest as they have two cylinders, unlike the industry standard of just the one. So whilst one is regenerating the other is still working to soften your water. This means the TwinTec S4 provides you with an uninterrupted supply of softened water, no matter how much water your family uses. 

Fits under your kitchen sink

It eliminates limescale from your home. It’s fitted directly to the mains water supply, compact enough to fit under your kitchen sink with minimal upkeep needed.

Non electric

The S4 is so efficient it has been designed to work solely off the power of your water supply. There are no timers, computers or manual adjustments to be concerned with. What’s more, there is no electrical feed so power cuts are of no concern. Sustainable energy, without the need for a power outlet. Genius! 

Find your local supplier

Enter your full postcode to find a TwinTec Retailer near you...

See how we compare

With all these great product benefits, our S4 product is the softener of choice. For more details on how we compare to others take a look at our comparison guide:


How it works

Water softeners protect your home and improve the quality of water by removing mineral deposits found naturally in water.
Learn more